Race Discovery
Greenhorn Adventure Race
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Greenhorn Adventure Race

Flintstone, Maryland, United States View on map
Sep 12, 2026 (America/New_York local time)
Adventure race

About this race

Welcome to Adventure Racing!  The Greenhorn AR, now in our 11th edition, was created to offer competitors a gateway into the sport of adventure racing. This 4 hour sprint adventure race was designed with the beginner in mind, but fun for everyone no matter the skill or experience level! While there is significant challenge built in, this event is fun and highly achievable for the novice racer. The navigation is straight forward and the maps that we provide are excellent. The mountain biking takes racers over gravel roads, some pavement, and semi-technical singletrack trails.  Finally, the paddling takes place on a clear lake.

Race Date: Saturday September 12, 2026
Location: Rocky Gap State Park, Flintstone, MD
Start Time: 11:00am

Total Distance/Time: Roughly 15 miles, 4 hours time limit
Disciplines:  Trekking (~3 to 6 miles), paddling (~2 mile), mountain biking (~8 to 10 miles), navigation (beginner)
Teams: Soloists and teams of two, three, or four (male, female, or co-ed).  Team members travel together the entire race.

Pick your distance

Adventure race

Greenhorn Adventure Race

Sep 12, 2026 24.1K 11:00 AM
$110.00
Closed

Typical race-day weather

Based on 1 year of Open-Meteo archive data for this event's race dates in Flintstone, plus the 3 days either side.

Temp (°C)
Minimum temperature (race-week average) 14.2° / Maximum temperature (race-week average) 27.9°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-week average) 14.2° / Maximum feels like — heat index / wind chill (race-week average) 30.3°
Peak wind (km/h)
Strongest wind of the day (race-week average)
10.9
Precip (mm)
Precipitation over the day (race-week average)
0.0mm
Humidity
Mean relative humidity (race-week average)
69.0%
Sunrise
Sunrise at the start line on September 12, 2026 (EDT)
Sunset
Sunset at the start line on September 12, 2026 (EDT)
Daylight
Hours between sunrise and sunset on race day
12h 35m

The sun rises at 6:52 AM and sets at 7:28 PM local time (EDT) in Flintstone on September 12, 2026 — 12h 35m 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 Flintstone

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, 4 Flintstone events

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