Course map, elevation profile & surface
Fly the course
Follow the route over 3D terrain, mile by mile.
Race-day light
For a 10:00 finish (an estimate) · starting 7:00 AM Oct 10. Dark means the sun below civil twilight.
Climbs
4 climbs · 853 ft totalbiggest firstElevation gain, measured two ways
| Source | Gain | vs lidar |
|---|---|---|
| Course file (GPX) | 4,226ft | +13% |
| USGS lidar, 1 m | 3,746ft | reference |
They differ because a GPS file picks up noise on every wiggle and often takes its heights from a coarse terrain model, while lidar maps the ground itself to about a metre. We sampled this route every 98 ft against USGS 3DEP and counted each rise of 10 ft or more, on Oct 24, 2026. The planner still uses the course file.
Aid stations as published on the course file
| Aid station | Mile | km |
|---|---|---|
| A AS8: Camp Marshall | 7.1 | 11.5 |
| A AS9: Moose Hill Rd. | 12.2 | 19.6 |
| A AS10: Four Chimneys | 19.3 | 31.1 |
| A AS11: Fay Mountain Farms | 22.5 | 36.1 |
| A AS12: Chase Corp. | 30.1 | 48.5 |
| A AS13: Whittier Farms | 35.5 | 57.1 |
| A AS13: Whittier Farms | 35.9 | 57.8 |
| A AS14: RT 16 @ Webster St/Douglas Rd | 41.1 | 66.1 |
| A FINAL CHECKPOINT: Water & EMT only | 44.8 | 72.1 |
Badge colours match the markers on the map above — always confirm locations and cutoffs with the race organizer.
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Conditions typical race-day weather for Oct 10 at the start
Typical = the median of 2016–2025 for Oct 10 ±3 days at the start line; a wet day has 1 mm of rain or more. Historical weather from Open-Meteo.
Race almanac 1 year of this race
Past editions
On race day it reached 60°F at the start, with a low of 42°.
| Year | Start °F | Rain | Wind |
|---|---|---|---|
| 2026 Oct 10 | 60°/42° | dry | 8mph |
race-day weather from the Open-Meteo historical archive (ERA5) at the start line.
Reviews what runners who have been there say
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About this course
Midstate Massive Ultra Trail 50 Miler — 2026 covers 48.4 mi (77.9 km) with 4,226 ft of elevation gain through Massachusetts, United States. That is about 87 ft per mile of climbing, and 4,486 ft of descent. The course tops out at 1,102 ft and bottoms out at 474 ft. The surface is 65% trail, 29% paved and 6% gravel. There are 9 aid stations on course; the longest stretch between aid is 7.7 mi. The profile has 4 sustained climbs; the biggest is the climb from mi 45.4, +223 ft over 0.6 mi at 6.7% on average (steepest stretch 13%). Race day is October 10, 2026, starting at 7:00 AM; the sun rises at 6:56 AM and sets at 6:16 PM. Typical race-day weather at the start: a high of 62°F and a low of 47°F, with a 34% chance of a wet day. The interactive map above shows the full route with its elevation profile and aid stations, built from the course's GPS file.
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Course history
- Sep 3, 2026Added to the catalog
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