A World Trail Majors flagship — 100km through the full range of Sapa's mountain terrain
A seriously challenging 100.9km with 5,500m of gain that covers every terrain type in the Sapa region. Starting in Sapa at 5 AM, the course climbs Ham Rong Mountain and traverses the Muong Hoa valley before ascending Mount Silverstone and descending into the remote Ban Moi valley. The iconic Cow Mountain ridgeline delivers sweeping views of Vietnam's highest peak before a technical descent into Ta Phin. Progressive checkpoint cutoffs, bamboo forests, riverside trails, steep village paths, and a final Silverstone climb demand experienced mountain legs. World Trail Majors flagship, ITRA 4-point qualifier, 100K UTMB Index, and Western States 2027 Qualifying Race.
Experienced ultrarunners
Sapa, Lao Cai, VietnamSeptember 19, 2026
Must complete an approved qualifier event within the qualification window
Submission deadline: August 20, 2026
Must have previously completed at least one chip-timed 50km+ ultra mountain race with significant elevation. Loop runs and virtual races do not qualify. Submit qualifying result URL at registration.
| Location | km | Elevation |
|---|---|---|
Start Start | 0.0 | 1,501 m |
Finish Finish | 97.1 | 937 m |
Sign in to see cutoffs, crew access, drop bags, and services for every aid station.
September is end of Vietnam's monsoon season; wet trails and technical conditions likely throughout
Temperatures drop significantly at night on high mountain sections; thermal layers required
No required gear specified
No recommended gear specified
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