River Falls, WI, United States · Saturday, November 7, 2026

Timed Other timed

Icebox 480 - 4 Hour Run

38 days away

not publishedn/a Distance

not publishedn/a Climbing

not publishedn/a Grit

We hold no course length for this race — a timed or backyard event is measured by the clock, not the kilometre — so there is no Grit score to give you.

44.8614° N, 92.6238° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Field size ~1 Tiny. You will run alone for most of it.

DUV results for the 2025 edition (4h) — ranked runners only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, November

Daytime high 5°C

Night low -4°C

Rainfall Mostly dry

Daylight 9 h 57 m of light

Regional 2001-2020 average for November — NASA POWER, grid elevation 318 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	4h	1	Nathan Swenson · 47.153 km	—
2022	4h	1	Collin Buck · 45.463 km	—

The field has held steady: 1 in 2022, 1 in 2025. 0% of the 2025 field were women.

DUV results for the 2025 edition (4h) — ranked runners 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

👟 gear

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

By UltraHub Expert

Gear for this race

Chosen for this trail race.

Trail Running Shoes Cushioning on trail that is still there in the last quarter.
Race Nutrition Self-supported fuelling between aid stations.
Hydration Vests Flask capacity without the bounce.
GPS Watches Battery life first — an ultra outlasts most full-GPS modes.

Adidas

Terrex Speed Ultra

RunRepeat found the Adidas Terrex Speed Ultra to have a grippy outsole and great lockdown, while iRunFar noted that the shoe works on a variety of trail conditi…

★★★★★ 4.5

Salomon