Monster Mash Dash 5K & 1Mile

Get ready for a "frightfully fun morning" at the Monster Mash Dash 5K & 1Mile on Sunday, October 25, 2026, in McLean, VA! This beloved annual event, hosted at Franklin Sherman Elementary School, invites runners of all ages and abilities to kick off their Halloween weekend with a spirited dash. Participants are strongly encouraged to don their most creative costumes, adding to the festive and "spooktacular" atmosphere.

The Monster Mash Dash offers both a 5K race and a 1 Mile Fun Run, catering to serious runners and families alike. The 1-mile course is particularly "easy enough for kids" and "stroller friendly", making it an ideal choice for a fun outing with little monsters in tow. While specific course details for the 5K are anticipated, the event's history as a community fundraiser suggests a welcoming route. Runners can look forward to typical race day conditions in late October, with highs around 63F and lows around 44F, and only a 13% chance of precipitation, providing pleasant running weather.

More than just a race, the Monster Mash Dash serves as the largest fundraising opportunity for Franklin Sherman Elementary School, having raised over $156,000 in previous years through its partnership with Potomac River Running. All pre-registered participants receive a commemorative race shirt, a "one-of-a-kind medal", race bib, and post-race snacks, along with free race day photos and a digital finisher certificate. Awards celebrate the top three overall male and female finishers, as well as age group winners across five-year increments, ensuring a rewarding experience for competitive spirits.