Milton, MA, United States · Sunday, April 18, 2027
Fixed Distance 50 mi
TARC Dont Run Boston (DRB) 50 Miles
214 days away
80 km Distance
1,900 m Climbing
6.9 Grit · Hardcore
What the course asks
Climbing rate 24 m / km
Rolling. Moderate undulations. Requires consistent effort across varying grades.
Field size ~9 Tiny. You will run alone for most of it.
DUV results for the 2025 edition (50mi) — finishers only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, April
Daytime high 13°C
Night low 3°C
Rainfall Showers likely
Daylight 13 h 27 m of light
Regional 2001-2020 average for April — NASA POWER, grid elevation 63 m. Not a forecast.
The Aid Station
Course-specific beta from the community
This is a rolling course. Expect fast, runnable sections where rhythm is key.
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for 80 km of trail with 1,900 m of ascent.
- Trail Running Shoes24 m of climb per kilometre — grip and rock protection before cushioning.
- Race Nutrition80 km of self-supported fuelling between aid stations.
- Hydration VestsPole attachment and chest-strap stability on steep ground.
- Trekking Poles1,900 m of ascent to walk up.
- Headlamps80 km almost certainly means running into the night.
Course Notes
Blue Hills Reservation
Similar races
Other 50 mi trail ultras, closest in distance first.