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Total distance

35 165m

Swim distance

7 940m

Run distance

27 225m

Avg. air temp

25° C

Avg. water temp

16° C

Race Details

This is the race that started the Swimrun movement in North America. It is an incredibly diverse route with cold, salty swims and runs traversing quintessential New England island roads. Every year, the course changes depending on the tides. A swim crossing one year might be a run leg the next. You must be prepared for anything and everything. This course suits a robust, well-rounded athlete with a keen sense of adventure.

World Series Registration Fee

Race alone or come as a team and enjoy the ÖTILLÖ Swimrun World Series at Casco Bay.


Early birdJanuary, 2024550 USD275 USD
StandardFrom February 1st, 2024600 USD300 USD
Late entryFrom March 1st, 2024650 USD325 USD
Last minuteFrom July 1st, 2024700 USD350 USD

World Series Weekend Schedule

14:00 – 15:00

Packet Pickup

15:00 – 16:00

Overflow Packet Pickup


Athletes arrive, park, and lineup at Casco Bay Lines (Mainland, Portland).


Athletes board the ferry. Tickets will be provided onsite prior to boarding.


Ferry departs for the starting line on Chebeague Island.


Anthem and announcements at the starting line.


Race begins.

World Series Course

Total distance: 35 165m/ 21.85mi
14 runs
13 swims
22.5% swimming

Interactive map

Overall Race Information

Ready to Race?