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The Sea to Summit is a multisport and triathlon event held on Saturday, July 25, 2026. It is located at 117 Pond Road in South Berwick, Maine, hosted by New England Endurance Events.

Date:
Sat, Jul 25, 2026 at 5:30 AM – 4:30 PM
Location:
117 Pond Road
South Berwick, Maine
03908
United States
OpenStreetMap Google Maps
Links:
s2stri.com Register at active.com
Tags:
MultiSport Triathlon

The Sea to Summit is not your traditional multisport race. This is an amazing day which combines the core elements of triathlon with the challenges of an adventure race. With assistance from your support designate, or porter, you’ll swim 1.2 miles, ride 95 miles then run and climb your way up the tallest mountain in the Northeastern United States. Serious athletes only need apply.

Event details and schedule

View our athlete's guide here

Organized by New England Endurance Events Event Organizer

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