Ultra Running Hub Island Park, ID, United States · Saturday, August 15, 2026
Harriman 50k Trail Run
Calculated from 50 km alone — the organiser has not published an elevation profile. Read 2.5 as a floor, not a verdict.
What the course asks
DUV results for the 2026 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, August
Regional 2001-2020 average for August — NASA POWER, grid elevation 10 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2026 | 50km | 40 | Neil Olsen · 04:43:33 | Hannah Alessandria · 05:47:11 |
| 2025 | 50km | 35 | Roman Krause · 03:37:42 | Susan Wedeking · 05:25:48 |
| 2024 | 50km | 33 | Sidney Noble · 03:27:03 | Ananda Lettner · 04:21:16 |
| 2023 | 50km | 44 | Matt Stevens · 03:52:34 | Sky Logan · 04:48:14 |
| 2022 | 50km | 32 | Joshua Reddish · 03:39:55 | Reagan Colyer · 04:49:56 |
| 2021 | 50km | 21 | Mike McKelvey · 04:28:27 | Christine Howe · 04:48:26 |
| 2020 | 50km | 24 | Fritz van de Kamp · 03:22:43 | Sally Anderson · 05:20:58 |
| 2019 | 50km | 30 | Tor Gudmundsen · 04:15:36 | Carly Flandro · 04:40:28 |
| 2018 | 50km | 30 | Tor Gudmundsen · 04:08:19 | Leslie Howlett · 04:23:48 |
| 2017 | 50km | 20 | Collin Anderson · 04:03:35 | Courtney Schwartz · 04:34:06 |
The field grew 14% between 2025 (35) and 2026 (40). 33% of the 2026 field were women.
DUV results for the 2026 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
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.
- GPS Watches Battery life first — a 50 km day outlasts most full-GPS modes.
Overview
The Harriman 50k Trail Run, organized by Buffalo Run Adventures, takes place in Island Park, ID, United States. This 50k trail race has been held 10 times, with the first edition in 2017 and the latest scheduled for 2026.
With 40 finishers at its most recent running, the Harriman 50k Trail Run has a larger field than 52% of 2664 comparable 50k races. The course features mostly rolling terrain, leading runners past two lakes, through forests, and across open meadows alongside the Henry's Fork river.
Similar races
Other 50K trail ultras, closest in distance first.