Ultra Running Hub Lakewood, CO, United States · Saturday, October 3, 2026
Fixed Distance 50K
The Bear Chase 50 km
17 days to go
50 km Distance
620 m Climbing
3.4 Grit · Challenging
What the course asks
Climbing rate 12 m / km
Fast & Flat. This course is relatively flat and fast. Ideal for PB attempts.
Time limit 11 hours
13:12 min/km average. Generous. Walkable throughout for most of the field. More forgiving than 62% of 50K races. Measured against 1007 races of the same distance. Cut-off calculator →
Field size ~91 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 17°C
Night low 1°C
Rainfall Mostly dry
Daylight 11 h 44 m of light
Regional 2001-2020 average for October — NASA POWER, grid elevation 2095 m. Not a forecast.
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 Shoes50 km of trail — cushioning that is still there in the last quarter.
- Race Nutrition50 km of self-supported fuelling between aid stations.
- Hydration VestsFlask capacity for 50 km, without the bounce.
- GPS WatchesBattery life first — a 50 km day outlasts most full-GPS modes.
Course Notes
Location: Bear Creek Lake Park; Course Surface: 95% of the course is on soft surface and single track dirt trail.
Similar races
Other 50K trail ultras, closest in distance first.