Available distances
About
The Monster Mash Dash takes place in McLean, in Fairfax County, Virginia, pairing a competitive 5K with a fun, family-friendly 1-mile run. Runners of all ages are welcome, and participants are encouraged to dress up in Halloween costumes.
The race doubles as a community event, with proceeds and participation supporting Franklin Sherman Elementary School.
Prepare for =PR= Races: Monster Mash Dash 5K & 1Mile 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 McLean.
Food for Others Tysons 5K & Fun Run
Sep 26, 2026 · Tysons Corner, VA · 2 mi away
3.1 mi · 1 mi
National Capital 10 Miler and Janet Braunstein 5 Miler
Oct 3, 2026 · Bethesda, MD · 7 mi away
20 mi · 5 mi
DC Half Races
Sep 20, 2026 · Washington, DC · 8 mi away
13.1 mi · 3.1 mi
Army Ten-Miler
Oct 11, 2026 · Arlington, DC · 8 mi away
10 mi
Fall Backyard Burn 5M/10M Trail Running Series-Race #1
Oct 18, 2026 · Great Falls Crossing, VA · 8 mi away
5.1 mi · 10 mi
Army Ten-Miler
Oct 11, 2026 · Washington, DC · 8 mi away
10 mi