The Road to Preah Vihear: Motorcycle Tour Meets Border Row

This article was originally drafted as a route guide. The plan changed in mid-2025 when artillery fire returned to the Dangrek Mountains, the access roads were sealed by military checkpoints on both sides, and the 11th-century Khmer temple of Preah Vihear was hit by shellfire that damaged all five of its gateway pavilions. As of May 2026, Preah Vihear remains closed to all foreign visitors. The Cambodian-Thai border crossings near it have been closed since June 2025. The temple itself is structurally compromised. The road that motorcycle riders used to take from the Cambodian side, Route 62 to Sra Em and then the laterite climb to the cliff, is currently a military zone. This is the honest version of what’s there, what happened, why the dispute persists, and what motorcycle riders should do instead in 2026.

What Preah Vihear actually is, on the geography and the stones

Preah Vihear is a Khmer Hindu temple built between the early 9th and the 12th centuries, with the bulk of the construction commissioned by King Suryavarman I in the early 11th century and continued by his successors. The site sits on a 525-metre cliff at the northern edge of the Dangrek Mountains, a sandstone escarpment that separates the Cambodian Plain from the higher Thai plateau of Khorat. The temple’s axial layout is unusual: 800 metres of staircases, terraces and gateway pavilions arranged on a single north-south axis from the entry steps at the foot of the cliff to the central sanctuary at the cliff edge. This north-facing orientation aligns the temple toward the Thai plateau, a geographic fact that has political consequences nine hundred years after the original architects chose the alignment.

The temple was originally Hindu, dedicated to Shiva, and the iconography on the surviving lintels and pediments shows the standard Cambodian Shaivite iconography of the period. The central sanctuary held a lingam, the phallic stone that represented Shiva’s creative power, which has long since been removed. As Cambodian state religion shifted from Hindu to Buddhist in the 13th and 14th centuries, the temple acquired Buddhist veneration without losing its physical Hindu form, a syncretic process common across Khmer temple sites including Angkor itself. UNESCO inscribed Preah Vihear as a World Heritage Site in 2008, citing the architectural sophistication and the dramatic cliff-edge location as outstanding universal values. The 2008 inscription is the moment that triggered the modern phase of the border dispute.

For riders who visited Preah Vihear before the 2025 closure — and there were enough of them across the 2013-2024 window to make the road familiar — the lasting impression was always the view from the cliff edge. The temple’s central sanctuary sits a metre from a 525-metre vertical drop, with views across the entire Cambodian plain to the south. Hendrik, a Hamburg-based architect on a 2019 BBT Cambodia tour who included Preah Vihear as an optional extension, called the view from the sanctuary “the single most dramatic temple location I have ever seen, and I have visited a hundred temples.” The architecture, by his assessment, was not the best of Khmer work. The placement was.

The 1962 ICJ ruling and the 1904 boundary it inherited

The legal dispute over Preah Vihear runs back to colonial-era treaty-making. In 1904 the French colonial administration of Cambodia signed a boundary treaty with the Kingdom of Siam (the predecessor state of Thailand) that established the Franco-Siamese border along the watershed of the Dangrek Mountains. The treaty was operationally implemented by a Mixed Delimitation Commission that produced detailed border maps published in 1907. The 1907 maps placed Preah Vihear on the Cambodian side of the border, despite the fact that the strict watershed interpretation would have placed it on the Thai side. The maps were never formally challenged by Siam at the time, and were used in subsequent administrative and diplomatic correspondence.

After Cambodian independence in 1953, Thailand began occupying the temple in 1954. Cambodia took the dispute to the International Court of Justice. The 1962 ICJ ruling, in a 9-3 decision, found in favour of Cambodia: the temple was on Cambodian territory, and Thailand was obligated to withdraw its forces and return any objects taken from the site. The ruling rested heavily on the doctrine of acquiescence — Thailand had not protested the 1907 maps for fifty years, which the court interpreted as tacit acceptance of the boundary as drawn. Thailand complied formally with the ruling but never accepted the underlying legal reasoning, and the 4.6 square kilometres of land adjacent to the temple remained disputed.

The 2013 ICJ ruling, prompted by Cambodian request for interpretation after 2008-2011 clashes, clarified that the 1962 ruling covered not just the temple structure itself but the entire “promontory of Preah Vihear” — the immediate land surrounding the site. Thailand was again obligated to withdraw military personnel from this zone. The ruling was technically unanimous, but the wording of “promontory” left ambiguity about the precise extent of Cambodian sovereignty, which both governments have exploited in subsequent diplomatic positioning. Thailand has continued to reference a 2007 unilateral map that claims approximately 4.6 square kilometres adjacent to the temple as Thai territory. This is the area where the artillery fire in 2025 occurred.

The 2025-2026 escalation, in the version not on the brochures

The renewed border conflict that closed Preah Vihear to motorcycle riders began in late May 2025. The immediate trigger was a localised incident at a smaller border post west of Preah Vihear involving Cambodian patrol soldiers, with disputed accounts of who fired first. Within 48 hours, both armies had reinforced their positions along the Dangrek frontier. By the end of June 2025, all official land border checkpoints between Thailand and Cambodia were closed — not just the Preah Vihear access points but the major Aranyaprathet-Poipet crossing used by overwhelming majority of overland tourists, and the southern Hat Lek-Koh Kong route. The closure of Aranyaprathet-Poipet in particular cut off a corridor that around 1.5 million foreign visitors used annually.

The military exchanges escalated through summer and autumn 2025. Britannica’s running record of the conflict documents artillery fire on multiple days, rocket strikes against forward positions, and at least one confirmed airstrike by the Thai air force against Cambodian positions in October 2025. Civilian casualties on the Cambodian side reached approximately 40 deaths by year-end, smaller numbers on the Thai side. The temple itself was hit by what Cambodian authorities described as Thai-fired rockets in late November 2025; the Washington Post documented the damage to all five gopuras (gateway pavilions) in a March 2026 piece, noting that the central sanctuary had thus far escaped direct damage but that ceiling collapses in the access corridors had rendered the entire complex unsafe for visitors.

A fragile ceasefire was negotiated through ASEAN mediation on December 27, 2025. The ceasefire holds as of May 2026 but has not been followed by a withdrawal of forward military positions, a reopening of border crossings, or a restoration of tourist access to Preah Vihear. The Cambodian and Thai governments continue to issue conflicting public statements. The underlying dispute — Thailand’s non-acceptance of the 1962 ICJ ruling on the surrounding 4.6 square kilometres — has not been resolved. The temple itself is closed for both safety and political reasons, with no announced reopening date.

Why the dispute will not resolve quickly

Three structural factors make the Preah Vihear dispute unlikely to resolve within the time horizon of any 2026 motorcycle tour planning. The first is domestic Thai politics: nationalist movements in Thailand have used Preah Vihear as a symbol of perceived Cambodian encroachment since 2008, and any Thai government that publicly accepts the full Cambodian interpretation of the 2013 ICJ ruling faces electoral consequences. The current Thai government has signalled willingness to negotiate but has not committed to formal acceptance of the underlying legal position.

The second is the international precedent question. The 2013 ICJ ruling, if implemented fully, would set a precedent for other Asian border disputes — the China-India Aksai Chin and Arunachal Pradesh disputes, the Japan-Korea Takeshima dispute, several Indonesia-Malaysia maritime questions — to be resolved through international judicial process rather than bilateral negotiation. Thailand’s reluctance to accept the full 2013 interpretation is partly motivated by regional implications. Cambodia and Thailand together cannot resolve the question without external mediation that both sides accept, which is the function ASEAN has been attempting.

The third is the structural damage to the temple itself, which now adds a UNESCO World Heritage protection layer to the political dispute. Restoration of the damaged gopuras will require multi-year international funding, UNESCO project management, and contractor access to the site that depends on the security situation. Even if the political dispute were resolved tomorrow, the temple would not be safely reopen to visitors before 2027 at the earliest. Anneliese, a Munich-based archaeologist who worked on the original UNESCO 2008 inscription dossier and visited the temple multiple times before the 2025 closure, told the Washington Post that restoration funding will be the gating constraint and that “the temple is going to be closed for tourism for years, regardless of what the diplomats do.”

What motorcycle riders should do instead in 2026

The honest answer for any rider whose Cambodia trip plan included Preah Vihear is to remove it from the itinerary and reallocate the time to other Cambodian destinations that remain fully accessible. Cambodia is not closed. Angkor and Siem Reap are operating normally and continue to be the headline Cambodian tourist destinations. The Cardamom Mountains in the southwest are open and remain one of the better adventure motorcycle destinations in the country. Mondulkiri and Ratanakiri in the northeast, recently connected by paved Route 76, are fully accessible. Battambang and Pailin in the west are open. The south coast — Sihanoukville, Kep, Kampot — operates normally.

The current operational complication is that the overland border crossings from Thailand are closed, so any Cambodia trip in 2026 must be planned around flying into Phnom Penh or Siem Reap and renting locally rather than crossing from Thailand on a motorcycle. The Big Bike Tours 10-day Thailand and Cambodia tour, which historically used the Aranyaprathet-Poipet overland crossing, has been temporarily restructured: clients fly into Phnom Penh, ride the Cambodian portion with bikes provided by BBT’s Cambodian partner, fly back to Bangkok for the Thai portion, and complete the tour as two linked segments rather than one overland circuit. Logistics are slightly more complex; the riding experience is unchanged.

Karim, a Brussels-based investment banker on a 2024 BBT Thailand-Cambodia tour who had specifically chosen the itinerary because of the Preah Vihear extension, returned for a 2026 trip on the modified flying logistics and reported that the Mondulkiri-Ratanakiri loop added in place of the Preah Vihear extension was the better part of the trip anyway. The historical significance of Preah Vihear is harder to substitute, but the riding experience is not.

What the historical visit was like, before the closure

For riders who did Preah Vihear during the 2013-2024 window, the standard approach was from the Cambodian side via Route 64 to Sra Em, the small town that served as the staging point for the temple. Sra Em sits in Preah Vihear province at the foot of the Dangrek escarpment, around 200 kilometres north of Phnom Penh on a paved road. From Sra Em, the temple access road climbed 15 kilometres up to the cliff base, with the last five kilometres being rough laterite that required a 4×4 or motorcycle for most of the period. A foot climb of around one kilometre on a paved staircase brought visitors to the temple entrance. Total approach time from Sra Em to the central sanctuary: around 90 minutes including the climb.

The Thai-side approach, when the political situation allowed, used the Khao Phra Wihan National Park access road from Si Sa Ket province in Isan. This route led to the foot of the cliff staircase from the north and offered a more dramatic walk-up because the cliff face was visible for the entire approach. The Thai-side park opened and closed intermittently across the 2009-2024 period depending on the diplomatic mood. As of mid-2026, the Thai park is closed.

The temple visit itself, for riders who completed it during the open window, took two to three hours. The five gopuras stepped up the temple axis at intervals of roughly 200 metres. Each gopura had distinct architectural detail — lintels with apsara dancers, pediments with Vishnu reclining on the cosmic serpent, sandstone column work that varied with the period of construction. The central sanctuary at the cliff edge offered the panoramic view across Cambodia that defined the trip. Most riders ended their visit at the sanctuary, walking back along the same axis. A few extended down a steep path on the eastern side of the cliff to a small Hindu shrine at the base, which added an hour and was rarely visited.

Pierre, a Lyon-based airline captain on a 2018 BBT-organised Cambodia tour, made the Thai-side approach on a day when the park was open and called it “the closest thing to a religious experience I have ever had walking up to a building.” He described the moment of cresting the staircase and seeing the central sanctuary framed against the sky over the Cambodian plain as the single image he had carried from his Asian motorcycle travels. The image is currently unobtainable. It may be obtainable again in two or three years. The temple is currently closed.

When the temple might reopen, realistically

The optimistic scenario is a 2027 reopening, contingent on three conditions: a stable bilateral ceasefire that holds for at least twelve months, an ASEAN-mediated framework agreement on the 4.6 square kilometres dispute that both governments formally accept, and UNESCO-funded restoration of the damaged gopuras to a safety standard that allows controlled visitor access. None of these three conditions is currently in place. The fragile December 2025 ceasefire is six months old as of writing. The bilateral framework discussion has not begun. The UNESCO restoration funding has been announced in principle but not committed in detail.

The pessimistic scenario is a 2030 or later reopening. Several precedents suggest the longer timeline: the closure of Angkor during the 1970s Khmer Rouge period lasted approximately 20 years before tourism resumed. The closure of Iraq’s Mesopotamian archaeological sites during the 2003-2011 occupation period lasted approximately 15 years for many sites. The Cambodian-Thai border dispute is less violent than either of those precedents but more politically intractable. Motorcycle riders planning Cambodia trips for 2026, 2027, and 2028 should assume Preah Vihear is not on the itinerary. The trip is still worth doing. The temple is a single component of a country with many other components.

Other contested-border temples worth knowing about

Preah Vihear is the headline contested-border temple in the region but it is not the only one. Ta Krabei (also spelled Ta Krabey), a smaller Khmer ruin around 35 kilometres east of Preah Vihear in Oddar Meanchey province, has been subject to its own bilateral dispute for similar reasons — the temple sits on the Dangrek escarpment and the watershed-versus-1907-map question applies. Riders who visited Cambodia in the 2017-2024 window sometimes added Ta Krabei to the Preah Vihear extension as a quieter alternative. The temple is currently also closed for the same security reasons.

Banteay Chhmar, in Banteay Meanchey province further west, is the more accessible alternative for riders interested in remote Khmer temple architecture without the political complication. Banteay Chhmar was a major 12th-century Khmer site built by Jayavarman VII and currently sits in a quiet rural area roughly 60 kilometres north of Sisophon. Access is currently open. The temple complex is genuinely impressive and worth a full half-day visit. Tomek, a Krakow-based architect on a 2024 BBT-organised Cambodia tour, made the Banteay Chhmar detour after his original Preah Vihear plan was cancelled and described the substitution afterward as “more rewarding precisely because nobody is there.” His group of five had the entire temple complex to themselves for three hours.

Sambor Prei Kuk, in Kampong Thom province, is the pre-Angkor site that predates most of the famous Khmer monuments. The temple group dates from the 7th century, was inscribed as UNESCO World Heritage in 2017, and sits comfortably away from any contested border. The riding access from Phnom Penh is straightforward on paved Route 6. Most BBT clients who include a temple-architecture focus in their Cambodia itinerary now visit Sambor Prei Kuk in the time previously allocated for Preah Vihear. Annika, a Stockholm-based history teacher on a 2025 BBT Cambodia tour, was the kind of client who would have spent two days at Preah Vihear if it were open; in 2025 she got two days at Sambor Prei Kuk and her field notebook reflects the level of attention she paid the substitute.

The political-tourism question, for riders who care

A subset of foreign motorcycle visitors specifically want to visit Preah Vihear because of the political-historical dimension, not despite it. The temple is one of the most consequential contested-territory sites in 20th and 21st century international law, and riders with a background in international relations or comparative politics often place it on their wishlist for exactly that reason. For these riders, the current closure is more frustrating than for tourists who simply wanted a temple view.

The honest advice for the politically motivated rider is that the current period of closure is precisely the period when on-site visiting tells you the least about the dispute. The temple is sealed off. The communities around it are evacuated or displaced. The Cambodian and Thai military positions are present but inaccessible. There is more to learn from the Phnom Penh National Museum’s exhibit on the 1962 ICJ proceedings, from the Bangkok-based Chulalongkorn University political science archives on the 2008-2011 escalation, and from the ASEAN secretariat’s published documentation, than there is from staring at a closed cliff edge from a checkpoint kilometre away.

The right way to engage politically with Preah Vihear in 2026 is to read deeply about it, talk to Cambodian and Thai professionals in Phnom Penh and Bangkok who lived through the recent escalation, and follow the ASEAN mediation process through the published proceedings. When the temple reopens, the deeper context will make the eventual visit more meaningful. Eduardo, a Madrid-based political journalist on a 2025 BBT Cambodia ride who had originally planned a Preah Vihear-focused trip, restructured his trip around interviews with displaced families from the Cambodian border villages and produced a long-form magazine article afterward that has had more impact than the temple visit would have produced. The closure of the site forced a more substantive engagement with the actual issue.

Plan Cambodia without the part that’s currently closed

Preah Vihear is closed. Cambodia is not. The Cambodian motorcycle tourism infrastructure has restructured itself across the last twelve months to deliver the rest of the country efficiently to foreign riders, and the destinations that remain — Angkor, the Cardamom Mountains, the Mondulkiri-Ratanakiri plateau, the south coast, Battambang — are still some of the most rewarding motorcycle territory in mainland Southeast Asia. Big Bike Tours’ Cambodia Motorbike Tours destination page describes the current 2026 itineraries with the fly-in logistics that have replaced the closed overland crossings. Get in touch via our contact page and we’ll plan a Cambodia trip that works within the current border reality. When Preah Vihear reopens, the trip can be extended. For now, it cannot.