Milton, MA, United States · Sunday, April 18, 2027
Fixed Distance 50K
TARC Dont Run Boston (DRB) 50K Split
214 days away
50 km Distance
1,500 m Climbing
4.8 Grit · Challenging
What the course asks
Climbing rate 30 m / km
Rolling. Moderate undulations. Requires consistent effort across varying grades.
Field size ~26 Small. Long stretches with nobody in sight.
DUV results for the 2021 edition (50km) — 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 50 km of trail with 1,500 m of ascent.
- Trail Running Shoes30 m of climb per kilometre — grip and rock protection before cushioning.
- Race Nutrition50 km of self-supported fuelling between aid stations.
- Hydration VestsPole attachment and chest-strap stability on steep ground.
- Trekking Poles1,500 m of ascent to walk up.
- GPS WatchesBattery life first — a 50 km day outlasts most full-GPS modes.
Course Notes
Blue Hills Reservation
Similar races
Other 50K trail ultras, closest in distance first.