About Red Feather Trail Jamboree 50mi
Red Feather Trail Jamboree 50mi is the 80.0km ultra trail at Red Feather Trail Jamboree 2025 (Red Feather Lakes, United States). The race starts on September 26, 2025.
Race strategy
Run hard on the first mountain, but save energy for the second.
- 557m descent. Go easy, save your quads.
- High point at 3339m. Control your HR at altitude.
- The finish is runnable. Save your legs to run it all the way.
- Long race. Control your HR and effort. Early mistakes cost the most.
- Ease into the early runnable section, save your quads on the descents until 49.1km, then run your race pace.
- Start · 0.0km–1.6km · Race-day nerves push your heart rate up: don't follow the crowd, find your own rhythm.
- Settle in · 1.6km–19.9km · Climb of 643m. Ease in: hold back more than feels necessary. The race is still ahead. Climb by heart rate or breathing, not pace. Running pays off here: run wherever you can. At altitude your pace drops, and that's fine.
- Work · 19.9km–38.3km · Descent of 557m averaging 6%, high point 3339m. Plus 1 more climb. This is where the race is built: steady, solid effort. Climb by heart rate or breathing, not pace. This descent is hard on the legs: short steps, stay in control, poles if you have them. At altitude your pace drops, and that's fine.
- Fade · 38.3km–49.1km · Descent of 609m averaging 6%. Your energy fades, and that's normal: hold a steady effort and stop counting the miles. This descent is hard on the legs: short steps, stay in control, poles if you have them. At altitude your pace drops, and that's fine. Your heart rate drifts down on its own: don't chase your early-race numbers, go by feel.
- Home · 49.1km–80.3km · 31.1km of runnable trail. No heroics: settle back into your own effort and hold it to the line. Running pays off here: run wherever you can. At altitude your pace drops, and that's fine.
Course
The course climbs 1400m+. With 18m/km of climbing, the course is predominantly runnable. By gradient, 40% of the distance is uphill, 36% downhill and 24% flat. The longest climb runs 11.3km at an average 5.7% grade (643m of vertical). The longest descent runs 10.8km at an average 5.6% grade (609m of vertical). The steepest climb averages 13.4% over 0.3km. The steepest descent drops at 18.2% over 0.4km. Surface: 60% trail and 36% smooth. Flat-equivalent effort: 100.9 FlatKM.
Poles
Poles bring little benefit here: only about 1.7km of pole-friendly terrain.
Quad damage
Quad damage risk is moderate (index 32 of 100), with 35% of the load in the first half: 2 descents deserve a plan and a couple of downhill sessions before race day.
- Ease into the early runnable section, save your quads on the descents until 49.1km, then run your race pace.
- #1 · 19.9–30.1 km · 557 m D−, -5.5% · 50.2 km ahead → control
- #2 · 38.3–49.1 km · 609 m D−, -5.6% · 31.1 km ahead → control
Weather
On race day, start temperatures have historically ranged from 7°C to 18°C, with around 15°C at the highest point; the chance of precipitation is about 26%.
This page has a pacing and nutrition planner, a gradient matrix, an interactive elevation profile and historical weather for Red Feather Trail Jamboree 50mi.