Megunticook Trail Festival Halfast 20k — 2026 — Course Map, Elevation Profile & Aid Stations

Course map, elevation profile & surface

Distance

13.3mi

Elev gain

1,906ft

Elev loss

1,903ft

High point

1,001ft

Low point

213ft

Drawing the course…

The course file didn’t load.Usually a hiccup. The stats above are still right.

Race-day light

In the dark

Sunrise

6:13am

Sunset

6:54pm

Headlamp from

Not needed

For a 2:50 finish (an estimate) · starting 7:00 AM Sep 12. Dark means the sun below civil twilight.

Climbs

3 climbs · 1,381 ft totalbiggest first

Pick a climb to find it on the profile and the map.

Elevation gain, measured two ways

Source	Gain	vs lidar
Course file (GPX)	1,906ft	+8%
USGS lidar, 1 m	1,766ft	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 30, 2026. The planner still uses the course file.

Conditions typical race-day weather for Sep 12 at the start

Typical high

71°F

Typical low

56°F

Chance of rain

33%

2025 high

68°F

Typical = the median of 2016–2025 for Sep 12 ±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 68°F at the start, with a low of 48°.

Year	Start °F	Rain	Wind
2026 Sep 12	68°/48°	dry	9mph

Next race day Sat, Sep 11, 2027 · 7:00 AM start

First lightsunrise 6:11 am

5:42am

Last lightsunset 6:57 pm

7:26pm

Moonwaxing gibbous, up until 2:41 am

87% lit

First and last light are civil twilight, the sun 6° below the horizon. The moon is lit as at midnight after the start; headlamp hours count a typical finish from the start while the sun is below civil twilight. Worked out for the start line.

race-day weather from the Open-Meteo historical archive (ERA5) at the start line.

Reviews what runners who have been there say

No reviews yet — be the first to run it and tell other runners what to expect.

About this course

Megunticook Trail Festival Halfast 20k — 2026 covers 13.3 mi (21.4 km) with 1,906 ft of elevation gain. That is about 144 ft per mile of climbing, and 1,903 ft of descent. The course tops out at 1,001 ft and bottoms out at 213 ft. The profile has 3 sustained climbs; the biggest is the climb from mi 4.9, +538 ft over 2.4 mi at 4.2% on average (steepest stretch 17%). Race day is September 12, 2026, starting at 7:00 AM; the sun rises at 6:13 AM and sets at 6:54 PM. Typical race-day weather at the start: a high of 71°F and a low of 56°F, with a 33% 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.

Load the course in the TrailGoat Run Planner for grade-adjusted pacing, climb-by-climb splits, hourly weather and a full hydration & fueling plan — free, no account needed.

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