Ultra Running Hub Phoenix, AZ, United States · Saturday, December 12, 2026
Fixed Distance 50K
PhoMo 50k
67 days away
50 km Distance
not publishedn/a Climbing
2.5 est Grit · Entry level
Calculated from 50 km alone — the organiser has not published an elevation profile. Read 2.5 as a floor, not a verdict.
What the course asks
Field size ~41 Small. Long stretches with nobody in sight.
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, December
Daytime high 18°C
Night low 4°C
Rainfall Mostly dry
Daylight 9 h 59 m of light
Regional 2001-2020 average for December — NASA POWER, grid elevation 495 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2025 | 50km | 41 | Michael Nanaszko · 04:36:38 | Danielle de Ruiter · 06:33:39 |
| 2024 | 50km | 43 | Dan Kirk · 05:09:11 | Shelby Heinz · 06:56:12 |
The field shrank 5% between 2024 (43) and 2025 (41). 20% 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.
Course notes
- gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 50 km of trail.
- 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.
Similar races
Other 50K trail ultras, closest in distance first.