2026 edition
Entry options are not yet confirmed for this edition. Check the organiser before making plans.
Modelled energy-cost change 8.1% versus flat · net elevation 0 m
Decision summary
Lower than 24% of comparable mapped races
36:00:00 total limit divided by distance. Check gun/chip timing and intermediate limits; allow time for stops.
Historical race-date favourability, not a forecast
Stored GPS route
Quick answers
raceindex.org has a GPS course file for Massanutten Mountain Trails 100 Mile Run Ultramarathon, so runners can inspect the route line on the map. Elevation charts and ascent figures appear only when that file includes usable elevation data.
The Massanutten Mountain Trails 100 Mile Run Ultramarathon route has 4,799 m of ascent, 4,799 m of descent and an estimated 8.1% grade-adjusted pace penalty versus a flat route.
The Massanutten Mountain Trails 100 Mile Run Ultramarathon route starts at Caroline Furnace Lutheran Camp, Fort Valley, Virginia and finishes at Caroline Furnace Lutheran Camp (same as start). Underfoot, expect demanding, rocky mountain trail with rugged rocky ridgeline sections. It passes Massanutten Mountains, George Washington National Forest, Shenandoah Valley, Kern's Mountain and Bird Knob. Figure-8 / 'two almost loops' course measuring about 100.6 miles, with 15 aid stations (8 crew-accessible, 10 with drop bags).
Drop bags supported at 10 aid stations. 15. Pacers are permitted; crews may support runners where rules allow.
The stored route produces 4,799 m of ascent, while a source states 5,639 m. GPS sampling and elevation models can produce different totals, so both are labelled rather than combined.
Its normalised GAP factor is 8.1% slower than a flat course, with about 4799 m of total ascent.