Race Discovery
Big A 50K Trail Race
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Big A 50K Trail Race

York, Maine, United States View on map
May 02, 2026 (America/New_York local time)
Trail running

About this race

The Big A 50K Course

The course is composed of three 10.35 mile loops starting at the summit of Mount Agamenticus (Big A) and climbing back up the Big A and going over Second Hill and Third Hill and back up the Big A. There are opportunities to cross the finish line at approximately 10 miles and 13 miles (or any multiple of them up to 31 miles/50K). The terrain is mostly single track with some dirt road and ATV-type trails. Footing is technical with plenty of rocks, roots, and elevation changes. Trail running shoes are recommended. The full 50K has approximately 5,787 feet of elevation gain.

Course Records

- Patrick Caron 4:48 (2017) - Lila Gaudrault  5:22 (2022)

Race Contacts

Please direct registration related questions to Nick Darby – ndarby@yorkmaine.org
For race related questions email the team at - Yorktrailrunner@gmail.com

Donations Needed

Did you notice registration was free? Historically this event has not had an official registration fee and instead asked for donations to benefit the Mount A Conservation Region. A minimum donation of $20 is recommended. Please reach out if you forgot to donate when registering or wish to mail in a check, as your support is vital to this event’s mission, ensuring the longevity of this trail race and greatly appreciated! Checks can be made out to "Mount A Conservation" and sent to the York Parks and Rec Department at 200 US Route 1, York, ME 03909.

Pick your distance

Trail running

Big A 50K Trail Race

May 02, 2026 Ultra 7:30 AM
Free
Closed

Typical race-day weather

Based on 5 years of Open-Meteo archive data for this event's race dates in York, plus the 3 days either side.

Temp (°C)
Minimum temperature (race-week average) 7.2° / Maximum temperature (race-week average) 14.5°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-week average) 4.3° / Maximum feels like — heat index / wind chill (race-week average) 14.2°
Peak wind (km/h)
Strongest wind of the day (race-week average)
19.1
Precip (mm)
Precipitation over the day (race-week average)
2.8mm
Humidity
Mean relative humidity (race-week average)
74.5%
Sunrise
Sunrise at the start line on May 2, 2026 (EDT)
Sunset
Sunset at the start line on May 2, 2026 (EDT)
Daylight
Hours between sunrise and sunset on race day
14h 10m

The sun rises at 5:34 AM and sets at 7:44 PM local time (EDT) in York on May 2, 2026 — 14h 10m of daylight.

Course

No course map published yet.

The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.

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Other races near York

Different organizers, within 40 miles, in the next three months

Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.

  • Entries, prices, waves and inclusions — the event's official registration page
  • Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
  • Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
  • Comparisons and counts — Race Discovery calendar, 5 York events

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