The 19th Dover Sherborn Boosters Triathlon is back for 2026! The organizers of this race are honored to be your beloved September sprint distance triathlon and looking forward to seeing everyone on Sunday, September 13th, 2026 @ 8am. 2026 Course Map: For a detailed course map click here 2026 Run Route: Map My Run Run Route here 2026 Bike Route: Map My Run Bike Route here 2026 Athletes Guide: Click here Want to volunteer? Student and adult volunteer sign ups below! • Student volunteer sign up here • Adult volunteer sign up here The Dover Sherborn Boosters Triathlon offers: Swim: .25 mile swim at Farm Pond, an immaculate and crystal clear kettle pond. Bike: 14.3 mile bike through the hills and backcountry, sought after by cyclists from all over the state. Run: 3.4 mile run through the challenging yet welcoming backroads of Sherborn and Dover. For those new to the race and for our valued alumni please see below on what makes this Triathlon so special: The cleanest fresh water, rolling swim start within 20 miles of downtown Boston A well designed, double transition style course that winds through the scenic roads and farms of Dover and Sherborn and finishes Olympic stadium style at Dover-Sherborn High School The best post race Breakfast Brunch Buffet this side of the Rocky Mountains - sponsored by a huge outpouring of support from local merchants A community organized, volunteer driven event developed to benefit the Dover-Sherborn Boosters - a non-profit focused on providing quality athletic experiences for our children while promoting health and exercise DS Boosters Triathlon past years photos: Click here DS Boosters Triathlon results: Click here
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