West Chesterfield, MA, United States · Saturday, May 30, 2026

Fixed Distance 100K

Chesterfield Gorge 100 Km Ultra Race

Race completed
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.

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42.4029° N, 72.8759° W© OpenFreeMap © OpenMapTiles Data from OpenStreetMap

What the course asks

Field size ~12 Tiny. You will run alone for most of it.

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, May

Daytime high 19°C
Night low 7°C
Rainfall Showers likely
Daylight 15 h 01 m of light

Regional 2001-2020 average for May — NASA POWER, grid elevation 357 m. Not a forecast.

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 Shoes100 km of trail — cushioning that is still there in the last quarter.
  • Race NutritionPast 100 km the palate quits before the legs do — carry more than one flavour.
  • Hydration VestsFlask capacity for 100 km, without the bounce.
  • Headlamps100 km almost certainly means running into the night.
  • AccessoriesChafe 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

Skratch Labs

Sport Hydration Mix

Clean electrolyte drink mix with real fruit flavor. Low sugar.

$20 ★★★★★ 4.5

Nathan

VaporKrar 12L

12L race vest co-designed with ultra champion Rob Krar, with insulated bladder pocket.

$170 ★★★★★ 4.6

Nitecore

UT32

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

$100 ★★★★★ 4.5

Darn Tough

Micro Crew Ultra Running

Merino wool trail running socks with lifetime warranty. Blister-resistant.

$23 ★★★★★ 4.7
All gear guides →

Course Notes

The course itself is a continually rolling jeep trail with a few rocks (but not a technical trail), with permanent mile markers along the way. The race will consist of one or more 7.75 mile (12.5k) trail out-and-backs (for 15.5 miles/25k total).

Similar races

Other 100K trail ultras, closest in distance first.