Race Day ScheduleYouth 200m Run - Start time 10:30am
Youth Half Mile - Start Time 10:40am
5k Race - Start Time 11:00am
Join us for the Spook-tacular 5th Annual Somerville Monster Dash 5k. The USATF certified 5k (3.1 mile) Monster Dash course takes place on the DCR walking, running & bike path: Course starts and finishes at Riverfront Park on Great River Road at Assembly Row Somerville MA, and follows along the Mystic River to the underpass boardwalk at Fellsway.
After clearing the boardwalk at .3 miles, the course loops the Mystic River along Shore Drive by the Blessing of the Bay Boathouse, then follows the paved path alongside Route 93N for a half mile, crosses the Mystic river alongside Rt. 16, then winds it’s way through Torbert Macdonald Park & the Mystic River State Reservation, before crossing back over the Mystic River, alongside the Fellsway, back to the underpass at 2.8 miles, and onto the finish line at Riverfront Park.
Registration fees
Where pricing applies, shown amounts include mandatory charges, items, and fees.
Youth 200 Meter
-
Register for Youth 200 Meter$12.55
Youth Half Mile
-
Register for Youth Half Mile$12.55
5K
-
Register for 5K$39.05
Prizes
Prizes will be awarded for top racers and top costumed runners that finish the race!!
Additional Event Info & Awards
Before the official Monster Dash 5K on Sunday 10/25 at 11am, we will hold 2 youth races that will start and finish on a closed path around Baxter Riverfront Park @ Assembly Row. The youth 200 meter race starts at 10:30 a.m., followed by the youth half mile (800M) timed race at 10:40 a.m.
Goodies and treats will be on hand for each participant of this 12 and under event.
Costume Award Categories
MOST ORIGINAL
SCARIEST
FUNNIEST
CUTEST
BEST GROUP COSTUME
Race Award Categories under 18- top male
under 18- top female
18-39 - 1st, 2nd, 3rd male
18-39 -1st, 2nd, 3rd female
40-59 - 1st, 2nd, 3rd male
40-59 - 1st, 2nd, 3rd female
60+ - 1st, 2nd, 3rd male
60+ - 1st, 2nd, 3rd female
ABOUT SOMERVILLE MA TRACK PAC, Inc
SOMERVILLE MA TRACK PAC, Inc 501C-3 NON PROFIT ORGANIZATION (Tax Exempt # 04-3135139) is the Monster Dash Event Organizer. Please visit our website at http://www.somervilletrackpac.org/
SHS Track Pac was formed in 1992 to support Somerville High School Boys & Girls Cross-Country and Track teams because we are in support of the positive goals these teams promote-physical fitness, fair competition, and spirited teamwork. All proceeds generated for the Somerville Track Parents & Alumni Club (SHS Track PAC) benefit the girls' and boys' Athletics Teams at SHS and may be used for equipment, team gear, registration for regional and national invitational meets, as well as for scholarship or book awards for eligible graduating Somerville High School athletes.
Number Pick Up
Number Pick Up Saturday, October 24th, 2026
At Old Magoun Saloon from 12PM-2PM at 525 Medford Street in Somerville.
Pick up also available from 9:30 - 10:30AM the day of at the start/finish line.
Event Shirts
Long Sleeve Shirts available this year!You asked and we listened! This year, we have added in an option to upgrade to a long sleeve (LS) tee for an extra $3. Standard short sleeve (SS) tees are included in the registration fee. We've also added in a youth size tee option as well.
T-shirt Order CUT OFF is October 11th.
Course Map
Contact information
- Event contact
- Somerville Monster Dash
