Ultra Running Hub Lakewood, CO, United States · Saturday, October 3, 2026
The Bear Chase 50 km
What the course asks
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
Regional 2001-2020 average for October — NASA POWER, grid elevation 2095 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2025 | 50km | 91 | Finnian Jacobson-Schulte · 03:25:00 | Hannah Allgood · 03:46:14 |
| 2024 | 50km | 64 | Brian Runyon · 04:09:44 | Dayna McLaughlin · 04:53:29 |
| 2023 | 50km | 91 | Gerasimos Kavvadas · 04:08:49 | Riley Brady · 04:03:31 |
| 2022 | 50km | 84 | Matt Daniels · 03:11:59 | Nicole Anderson · 04:10:08 |
| 2021 | 50km | 87 | Martin Oleskiewicz · 04:32:01 | Hannah Osowski · 04:07:12 |
| 2019 | 50km | 132 | Sam Beal · 03:29:14 | Hannah Billings · 04:44:00 |
| 2018 | 50km | 145 | Benjamin Zywicki · 03:20:32 | Kim Dobson · 03:54:23 |
| 2017 | 50km | 136 | Philip Reutlinger · 03:43:00 | Zofia Tillman · 04:38:24 |
| 2016 | 50km | 85 | Stephen Clark · 03:55:12 | Malia Crouse · 03:56:32 |
| 2015 | 50km | 112 | Christopher Gregory · 03:53:00 | Beth Kohring · 04:24:14 |
The field grew 42% between 2024 (64) and 2025 (91). 34% 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
This is a fast & flat course. Expect fast, runnable sections where rhythm is key.
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 50 km of trail with 620 m of ascent.
- 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 Bear Chase 50 km, organised by Aravaipa Running, has a total elevation gain of 620 meters over its 50 km distance, averaging 12.4 meters of climb per kilometer. This makes it a moderately hilly trail race held in Lakewood, CO.
With a time limit of 11 hours, the cutoff pace is 13.2 minutes per kilometer, which is tighter than 34% of 50k races. Runners will find 95% of the course on soft-surface and single-track dirt trail within Bear Creek Lake Park.
The race has been held 10 times since 2015, with 91 finishers in the latest edition in 2025. Its field size is larger than 76% of 2662 peer 50k races.
Similar races
Other 50K trail ultras, closest in distance first.