The 2019 Sea to Summit Triathlon
July 27, 2019

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 1.5 miles, ride 92+ miles then run and climb your way  up the tallest mountain in the Northeastern United States. Serious athletes only need apply — and don’t delay, for the field limit has been reached in each of the past three years.

voted one of the world's top 5 ``bucket list`` races
triathlete's choice awards, january 2018
Race Details

Course Maps



Qualification Standards

This is not a race for beginners. Required for entry into Sea to Summit is the completion of a 70.3 distance triathlon in 6:15 or less, or a 140.6 (“Ironman”) triathlon in 13:59 or less, after Jan. 1, 2014. Alternatively, athletes who have completed two or more IM distance races since 2009 — with one of their finishes at the qualifying standard — will also be accepted. The Race Directors may allow entries by athletes who have completed other recent races of similar difficulty if they are convinced the athlete likely has the ability to reach the checkpoints before the cut-off times.  Athletes must be 18 years of age or older.


To do the entire race by oneself is difficult, but many accomplished athletes can form a relay team. Athletes who recently completed a 70.3 or 140.6 will qualify — if their times were under 7 hours or 15 hours, respectively.  Other qualifying standards: swimmers who completed a results-published mile swimming race in less than 50 minutes; cyclists who completed a results-published century ride in less than 7 hours, and runners who completed a half-marathon in under 2:15. You’ve accomplished something else? Ask the Race Director. Athletes must be 18 years of age or older.


I love the S2S race!


The high-level ability of the field this was very obvious to me on the bike…almost like Kona…but with a laid back, much friendlier tone.”


No hoopla, no spectators, no brand name…just me and the water, road and mountain.”


Reaching the summit of Mount Washington…having started swimming in the ocean, riding across multiple states and running up that beast of a mountain…was life-altering.”


How can you resist a dawn swim in a Maine river, a bike through rural New Hampshire, and finishing at the top of the tallest mountain in the Northeast? So beautiful it's almost not hard. Almost."


Sea2Summit transformed me. It was so much more than a tri. It was a test of personal fortitude met with the extreme beauty of the White Mountains. If you’re looking for the next adventure race challenge, this is it.”

Register for 2019
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