Mountain Masochist 100km Trail Run

Race completed

100 km Distance

1,800 m Climbing

7.7 Grit · Hardcore

34.0095° N, 118.1054° W © OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Climbing rate 18 m / km Rolling. Moderate undulations. Requires consistent effort across varying grades.

Time limit 9 hours 5:24 min/km average. Tight. You are racing the clock from the start. Among the tightest 100K cut-offs we track. Measured against 238 races of the same distance. Cut-off calculator →

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

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, November

Daytime high 21°C

Night low 10°C

Rainfall Dry — rain unlikely

Daylight 10 h 39 m of light

Regional 2001-2020 average for November — NASA POWER, grid elevation 395 m. Not a forecast.

Results history

Year	Race	Finishers	Men's winner	Women's winner
2025	100km	15	Matthew Shipman · 11:08:51	Beth Bauer · 13:24:35
2024	100km	6	Will Voelzke · 13:10:49	Alyx Luck Barnett · 15:52:46

The field grew 150% between 2024 (6) and 2025 (15). 20% 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.

Course notes

terrain This is a rolling course. Expect fast, runnable sections where rhythm is key.
gear With trail terrain, choose a shoe with moderate cushioning for optimal performance.
nutrition For 100km+ efforts, prioritize real food at aid stations to prevent palate fatigue.

Gear for this race

Chosen for 100 km of trail with 1,800 m of ascent.

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

Ultra Glide 4

$159.95 ★★★★★ 4.6

Salomon

Aero Glide 4 Grvl

$159.95 ★★★★★ 4.5

Maurten

Gel 100

Hydrogel technology for 25g carbs per gel with minimal GI distress.

$3.5 ★★★★★ 4.7

Salomon

ADV Skin 12

Industry-standard 12L race vest with front flask pockets and minimal bounce.

$180 ★★★★★ 4.8

Nitecore

UT32

Dual-beam trail running headlamp (1100 lumens) with spot and flood beams.

$100 ★★★★★ 4.5

Squirrel's Nut Butter

Anti-Chafe Balm

All-natural anti-chafe balm. Essential for 100+ mile races.

$12 ★★★★★ 4.8

All gear guides →

Overview

The Mountain Masochist 100km Trail Run in Montebello, VA, starting at the James River Visitor Center, is a highly challenging event with a course that combines roads, jeep trails, and single track. Its 9-hour time limit is tighter than 99% of 100k races, leaving little margin for error, particularly with an average pace of 5.4 minutes per kilometer to stay within the cut-off.

The race features 1800 meters of elevation gain over 100 kilometers, averaging 18 meters of climb per kilometer. With a field smaller than 73% of 100k races, it offers a more intimate race experience. The race has been held 2 times, with the most recent edition in 2025 seeing 15 finishers.

Similar races

Other 100K trail ultras, closest in distance first.