Upton 10.5K and Half Marathon Trail Race 21 km
RunningLaps
Date
Sun, 8 Nov 2026
Start
09:00
Venue
Upton State Forest, park entrance at Westboro St and Southboro Rd, Upton, MA 01568
Upton, Worcester County
Countdown
November
The same 10.5K loop run twice, so you learn the climbs on lap one and know exactly what is coming on lap two. Steady, rolling trail rather than a monster.
Key facts
01Two laps of the 10.5K loop
02No dogs allowed on the course
03Course is not stroller-friendly
Create a free training plan for the Upton 10.5K and Half Marathon Trail Race 21 km
7-day free trial, no card required
The course
One lap, on repeat
Upton · one lap
Distance21km
Total climb439m
Start · finishOne lap · elevation
0 kmDrag map to rotate10.4 km
Weather
Early-November, Upton
12°CTypical high
1°CTypical low
-8°CColdest in 20 years
28%Days with rain
Highs around 12°C and lows around 1°C, but it has dropped to -8°C. Rain on 28% of days. Pack for the cold end, not the average.
NASA POWER data, 2006-2025, the week either side of race day
Results
Course verified. Results not yet available.
Organiser
OrganiserTri-Valley Front Runners
Websitetri-valleyfrontrunners.com
Instagram@tri_valley_frontrunners
Running since2014
Training
Training for the Upton 10.5K and Half Marathon Trail Race 21 km
We don't do generic plans. We combine deep knowledge of this race's demands with your recent training, then build a plan with you that progresses as you do.
Beina integrates directly with your existing tools to understand your current fitness, and synchronise your planned sessions.
Intervals.icuWhat a Upton 10.5K and Half Marathon Trail Race 21 km plan targets
Typical sessions
21 km with 439 m of climbing
Time on feet and fatigue resistance
Fuelling and pacing for the whole event
What your weeks look like
Typical sessions
Long runs that build time on your feet
Tempo and threshold sessions to hold race pace
Back-to-back weekend runs for fatigue resistance
Not a generic schedule
Typical sessions
Built from your current fitness and the time you actually have
Adapts every week as Beina learns how you respond
Syncs your sessions straight to Garmin and Wahoo
One clear next session, never a wall of spreadsheet
Entries open now
Get your Upton 10.5K and Half Marathon Trail Race 21 km plan.
7-day free trial, no card required.
More events in November in United States
Fire on the MountainSun, 1 Nov 2026 · Little Orleans→Mamba 100Fri, 6 Nov 2026 · New York→tBunk Endurance ChallengeFri, 6 Nov 2026 · Cross City→Trail Arizona IndividualFri, 6 Nov 2026 · Fort McDowell→25 Hours in Frog HollowSat, 7 Nov 2026 · Virgin→All For 1 Endurance ChallengeSat, 7 Nov 2026 · Nevada City→
