Peoria, AZ, United States · Monday, December 28, 2026

Fixed Distance 100K

Across The Years, 100km

89 days away
100 km Distance
6 m Climbing
5.0 Grit · Challenging
33.5806° N, 112.2374° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 0 m / km Fast & Flat. This course is relatively flat and fast. Ideal for PB attempts.
Field size ~8 Tiny. You will run alone for most of it.

DUV results for the 2025 edition (100km) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, December

Daytime high 18°C
Night low 5°C
Rainfall Dry — rain unlikely
Daylight 9 h 56 m of light

Regional 2001-2020 average for December — NASA POWER, grid elevation 398 m. Not a forecast.

Results history

Year Race Finishers Men's winner Women's winner
2025 100km 8 David (Dave) Carta · 08:50:01 Dawn Gwin · 12:14:17
2024 100km 8 Adam DeBrosse · 11:43:12 Sierra Degroff · 09:06:19

The field has held steady: 8 in 2024, 8 in 2025. 38% of the 2025 field were women.

DUV results for the 2025 edition (100km) — 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

⛰️ terrain

This is a fast & flat course. Expect fast, runnable sections where rhythm is key.

By UltraHub Expert
👟 gear

With trail terrain, choose a shoe with moderate cushioning for optimal performance.

By UltraHub Expert
🥤 nutrition

For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.

By UltraHub Expert

Gear for this race

Chosen for 100 km of trail with 6 m of ascent.

  • Trail Running Shoes 100 km of trail — cushioning that is still there in the last quarter.
  • Race Nutrition Past 100 km the palate quits before the legs do — carry more than one flavour.
  • Hydration Vests Flask capacity for 100 km, without the bounce.
  • Headlamps A 73 h limit puts you out there after dark.
  • Accessories Chafe and blisters end more 100 km races than fitness does.
All gear guides →

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