Doi Saket, Chiang Mai, Thailand · Saturday, October 31, 2026

Fixed Distance 50K

Thep Sadet Trail 50km

31 days away

56 km Distance

3,500 m Climbing

8.1 Grit · Hardcore

18.8732° N, 99.1366° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 63 m / km Mountain. Significant climbing. Steep sections will require power hiking.

Time limit 17 hours 18:13 min/km average. Generous. Walkable throughout for most of the field. Among the most forgiving 50K cut-offs we track. Measured against 1034 races of the same distance. Cut-off calculator →

Field size ~68 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2025 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, October

Daytime high 27°C

Night low 19°C

Rainfall Showers likely

Daylight 11 h 29 m of light

Regional 2001-2020 average for October — NASA POWER, grid elevation 661 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	50km	68	Joost Weimar · 08:32:33	Yupa Saelee · 08:39:47
2024	50km	78	Noppadol Kongkaew · 08:11:12	Chiraporn Punkasi · 09:51:15

The field shrank 13% between 2024 (78) and 2025 (68). 41% of the 2025 field were women.

DUV results for the 2025 edition (50km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

The Aid Station

Course-specific beta from the community

⛰️ terrain

This is a mountain course. Poles are highly recommended for the sustained climbs.

By UltraHub Expert

👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert

Gear for this race

Chosen for 56 km of trail with 3,500 m of ascent.

Trail Running Shoes 63 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition 56 km of self-supported fuelling between aid stations.
Hydration Vests Pole attachment and chest-strap stability on steep ground.
Trekking Poles 3,500 m of ascent to walk up.
Headlamps A 17 h limit puts you out there after dark.

Brooks

Catamount 3

RunRepeat found the Brooks Catamount 3 to have a cozier upper that enhances the overall fit, though breathability and durability could be better. iRunFar noted…

★★★★★ 4.5

Salomon

Sense Ride 5

RunRepeat found the Salomon Sense Ride 5 to have immaculate lockdown and a smooth and stable ride, making it confident on moderate trails and steep downhills. I…

★★★★★ 4.5

Spring Energy