Mount Ashland, OR, United States · Saturday, July 10, 2027

Fixed Distance 100K

Siskiyou Out Back 100 Km Trail Run

283 days away

100 km Distance

not publishedn/a Climbing

5.0 est Grit · Challenging

Calculated from 100 km alone — the organiser has not published an elevation profile. Read 5.0 as a floor, not a verdict.

42.0809° N, 122.7169° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Field size ~115 Mid-sized. Company early, well spread out by halfway.

DUV results for the 2026 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, July

Daytime high 31°C

Night low 12°C

Rainfall Dry — rain unlikely

Daylight 15 h 05 m of light

Regional 2001-2020 average for July — NASA POWER, grid elevation 1215 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2026	100km	115	Robert Ressl-Moyer · 10:25:18	Annie Behrend · 12:35:08
2025	100km	114	Jamie Hunyor · 10:05:53	Cheryl Matson · 12:47:38
2024	100km	101	Ryan Neely · 10:10:29	Abigail Swift · 11:53:26
2023	100km	89	Jace Ives · 09:56:47	Lisa Wonneberg · 12:54:36
2022	100km	84	Eric Neill · 10:11:54	Allegra Krasznekewicz · 12:48:45
2021	100km	82	Eric Neill · 10:44:14	Clare Taylor · 12:01:17
2019	100km	76	Colton Gale · 09:39:05	Felice Kelly · 11:44:09

The field has held steady: 114 in 2025, 115 in 2026. 22% of the 2026 field were women.

DUV results for the 2026 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

👟 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.

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 100 km almost certainly means running into the night.
Accessories Chafe and blisters end more 100 km races than fitness does.

Salomon

Aero Glide 4 Grvl

$159.95 ★★★★★ 4.5

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

Skratch Labs