Ultra Running Hub Red Feather Lakes, CO, United States · Saturday, September 26, 2026
Fixed Distance 50K
Red Feather Trail Jamboree - 50k
10 days to go
50 km Distance
1,281 m Climbing
4.4 Grit · Challenging
What the course asks
Climbing rate 26 m / km
Rolling. Moderate undulations. Requires consistent effort across varying grades.
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 ~135 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, September
Daytime high 20°C
Night low 5°C
Rainfall Mostly dry
Daylight 12 h 02 m of light
Regional 2001-2020 average for September — NASA POWER, grid elevation 2414 m. Not a forecast.
The Aid Station
Course-specific beta from the community
This is a rolling 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 1,281 m of ascent.
- Trail Running Shoes26 m of climb per kilometre — grip and rock protection before cushioning.
- Race Nutrition50 km of self-supported fuelling between aid stations.
- Hydration VestsPole attachment and chest-strap stability on steep ground.
- Trekking Poles1,281 m of ascent to walk up.
- GPS WatchesBattery life first — a 50 km day outlasts most full-GPS modes.
Course Notes
Start at the Ben Delatour Scout Ranch, Red Feather Lakes region in Northern Colorado! 70-80% singletrack, 20-30% dirt road
Similar races
Other 50K trail ultras, closest in distance first.