Mae Sai, Thailand · Saturday, August 1, 2026
Fixed Distance 50K
AKHA Trail
Race completed
55 km Distance
4,700 m Climbing
9.8 Grit · Elite / extreme
What the course asks
Climbing rate 85 m / km
Vertical. Extreme verticality. This is a technical mountain course with sustained steep grades.
Time limit 8 hours
8:44 min/km average. Comfortable. Room to walk the climbs and stop at aid. Among the tightest 50K cut-offs we track. Measured against 1007 races of the same distance. Cut-off calculator →
Field size ~13 Tiny. You will run alone for most of it.
DUV results for the 2025 edition (55km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, August
Daytime high 29°C
Night low 21°C
Rainfall Wet — expect rain
Daylight 13 h 04 m of light
Regional 2001-2020 average for August — NASA POWER, grid elevation 725 m. Not a forecast.
The Aid Station
Course-specific beta from the community
This is a vertical course. Poles are highly recommended for the sustained climbs.
With road terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 55 km of road with 4,700 m of ascent.
- Trail Running Shoes85 m of climb per kilometre — grip and rock protection before cushioning.
- Race Nutrition55 km of self-supported fuelling between aid stations.
- Hydration VestsPole attachment and chest-strap stability on steep ground.
- Trekking Poles4,700 m of ascent to walk up.
- GPS WatchesBattery life first — a 55 km day outlasts most full-GPS modes.
Similar races
Other 50K road ultras, closest in distance first.