Swoope, VA, United States · Saturday, September 25, 2027

Fixed Distance 100K

Grindstone 100 Km

360 days away

100 km Distance

3,350 m Climbing

10.0 Grit · Elite / extreme

38.1582° N, 79.2064° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 34 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.

Time limit 18 hours 10:48 min/km average. Generous. Walkable throughout for most of the field. About average for a 100K. Measured against 214 races of the same distance. Cut-off calculator →

Field size ~156 Mid-sized. Company early, well spread out by halfway.

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, September

Daytime high 25°C

Night low 13°C

Rainfall Showers likely

Daylight 12 h 05 m of light

Regional 2001-2020 average for September — NASA POWER, grid elevation 583 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	100km	156	Mead Binhammer · 09:38:11	Sandi Nypaver · 11:24:54
2024	100km	211	Sean Bowman · 10:36:26	Holly Benner · 11:22:44
2023	100km	228	Caleb Olson · 08:54:43	Lotti Brinks · 10:37:25

The field shrank 26% between 2024 (211) and 2025 (156). 17% 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 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

🥤 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 3,350 m of ascent.

Trail Running Shoes 34 m of climb per kilometre — grip and rock protection before cushioning.
Race Nutrition Past 100 km the palate quits before the legs do — carry more than one flavour.
Hydration Vests Pole attachment and chest-strap stability on steep ground.
Trekking Poles 3,350 m of ascent to walk up.
Headlamps A 18 h limit puts you out there after dark.

La Sportiva

Prodigio Pro

RunRepeat found the La Sportiva Prodigio Pro to have a secure, locked-in fit due to its premium upper, and also praised the shoe's energetic ride, particularly…

$225 ★★★★★ 4.6

Salomon