Dances with Dirt - Gnaw Bone 50 Mile Ultra

Race completed

80 km Distance

2,600 m Climbing

7.9 Grit · Hardcore

39.2073° N, 86.2511° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 33 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.

Field size ~15 Tiny. You will run alone for most of it.

DUV results for the 2026 edition (50mi) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.

Typical conditions, May

Daytime high 23°C

Night low 12°C

Rainfall Showers likely

Daylight 14 h 19 m of light

Regional 2001-2020 average for May — NASA POWER, grid elevation 212 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2026	50mi	15	Dalton Zirbel · 08:12:17	Ashley Haynes · 11:24:09
2025	50mi	22	Tyler Kelley · 09:15:38	Beth Bauer · 09:57:19
2024	50mi	14	Corey Scott · 09:42:33	Ashley Haynes · 09:43:46
2022	50mi	14	Dan Courtney · 10:20:46	Holly Gordon · 11:55:56
2021	50mi	22	Jonathan Hastings · 08:40:48	Michelle Kent · 09:00:17
2019	50mi	32	Joshua Nichols · 09:14:02	Michelle Kent · 09:20:18
2018	50mi	33	Jonathan Hastings · 08:03:32	Faith Ataman · 11:41:06
2017	50mi	29	Zane Yeager · 08:06:53	Jessica Vargo · 10:27:15
2016	50mi	28	Joseph Bell · 09:22:42	Mika Thewes · 10:23:52
2015	50mi	33	John Kaeding · 09:52:13	Alicia Rich · 09:22:28

The field shrank 32% between 2025 (22) and 2026 (15). 13% of the 2026 field were women.

DUV results for the 2026 edition (50mi) — 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 rolling 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

Gear for this race

Chosen for 80 km of trail with 2,600 m of ascent.

Trail Running Shoes 33 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition 80 km of self-supported fuelling between aid stations.
Hydration Vests Pole attachment and chest-strap stability on steep ground.
Trekking Poles 2,600 m of ascent to walk up.
Headlamps 80 km almost certainly means running into the night.

Asics

Trabuco Max 3

★★★★★ 4.6

Adidas

Terrex Agravic Speed Ultra

RunRepeat found the Adidas Terrex Agravic Speed Ultra to be perfect for midfoot and forefoot strikers, while iRunFar noted that the shoe feels incredibly effici…

★★★★★ 4.5

Spring Energy