Yilan Dongshan River 50km Ultra-Marathon

33 days away

50 km Distance

not publishedn/a Climbing

2.5 est Grit · Entry level

Calculated from 50 km alone — the organiser has not published an elevation profile. Read 2.5 as a floor, not a verdict.

23.9145° N, 121.0441° E © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Time limit 12 hours 14:24 min/km average. Comfortable. Climbing is unpublished, so this pace is a ceiling on the effort, not a measure of it. More forgiving than 73% of 50K races. Measured against 1058 races of the same distance. Cut-off calculator →

Field size ~122 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, November

Daytime high 19°C

Night low 12°C

Rainfall Showers likely

Daylight 10 h 55 m of light

Regional 2001-2020 average for November — NASA POWER, grid elevation 1323 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	50km	122	Chin-Jui (Mark) Hsu · 03:34:27	Ming Huang · 04:29:11
2024	50km	136	Chi-Huang Lin · 03:33:59	Nan-Ping Wang · 04:03:52
2023	50km	63	Zhi-Yuan Lin · 03:54:42	Shu-Yu Lin · 04:54:55
2022	50km	97	Ting-Fan Sung · 03:50:02	Li-Chun Kuo · 04:29:16
2021	50km	77	Yi-Ren Hong · 03:20:45	Min-Ling Wang · 04:33:56
2020	50km	89	Ting-Fan Sung · 03:52:44	Shiou-Jyu Luo · 05:37:11
2019	50km	105	Mitsuo Harada · 04:15:45	Po-Ching Lee · 05:07:24
2018	50km	177	Fu-Chieh Yang · 04:22:46	Ya-Wen Lin · 05:19:28
2017	50km	183	Chun-Chieh Chang · 03:52:21	Shu-Ju Chuang · 04:38:14
2016	50km	246	Kuo-Lun Huang · 03:35:22	Hsiao-Min Yu · 05:08:10

The field shrank 10% between 2024 (136) and 2025 (122). 25% 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.

Course notes

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

Gear for this race

Chosen for 50 km of trail.

Trail Running Shoes 50 km of trail — cushioning that is still there in the last quarter.
Race Nutrition 50 km of self-supported fuelling between aid stations.
Hydration Vests Flask capacity for 50 km, without the bounce.
Headlamps A 12 h limit puts you out there after dark.
GPS Watches Battery life first — a 50 km day outlasts most full-GPS modes.

New Balance

Fuel Cell Super Comp Trail

★★★★★ 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

Tailwind