Available distances
About
The MCRRC Stone Mill 50 Mile Run is an endurance test held in Montgomery Village, Maryland, sending runners across 50 miles of scenic terrain that includes wooded stretches and small stream crossings, almost entirely on single-track dirt trail from start to finish.
Prepare for MCRRC Stone Mill 50 Mile Run with RunRun
An AI-generated training plan, adjusted every week based on your real sessions. Built around your goal, current level and race date.
- Personalized plan based on your VO2max, history and weekly availability
- Strava and Garmin sync: your sessions are analyzed and the plan adapts
- Target paces, long runs, key sessions: everything is calculated for race day
Races nearby
Other upcoming races around Montgomery Village.
Schaeffer Half Marathon and 10K Trail Run
Nov 7, 2026 · Germantown, MD · 4 mi away
3.2 mi · 6.7 mi · 13 mi
Fall Backyard Burn 5M/10M Trail Running Series-Race #2
Nov 22, 2026 · Reston, VA · 11 mi away
5 mi · 10 mi
Fall Backyard Burn 5M/10M Trail Running Series-Race #1
Oct 18, 2026 · Great Falls Crossing, VA · 16 mi away
5.1 mi · 10 mi
=PR= Races: Monster Mash Dash 5K & 1Mile
Oct 25, 2026 · McLean, VA · 17 mi away
1 mi · 3.1 mi
Tunnel Hill 100 & 50 mile runs
Nov 9, 2026 · Vienna, VA · 19 mi away
100 mi · 50 mi · 50 mi
Rick O'Donnell Memorial 5 Mile Trail Run and Ultra Challenge
Oct 11, 2026 · Mount Airy, MD · 20 mi away
5 mi · 4 h · 8 h