
OTILLO Swimrun Casco Bay Islands is a swimrun race on August 8, 2027 in Long Island, ME, with entry fees from $110 to $750.
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
80°
Typical Low
61°
Chance of Rain
32%
Based on US Climate Normals data from Portland Intl Jetport, 8 mi from the venue.
City Elevation
21 ft
Nearest Airport
PWM
Portland International Jetport · 8 mi
Time Zone
Eastern Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Every finish line starts with a single decision. Claim your spot at OTILLO Swimrun Casco Bay Islands, put it on the calendar, and turn “someday” into a start date.
276
Days to train
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Endurance Grid is here to help you understand the sport, decide if it’s the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
SwimRun is a continuous race that alternates open-water swimming and running across a series of segments — you swim in your shoes and run in your wetsuit, carrying your gear the whole way. Many events are raced in pairs.
With no transitions and a course that pinballs between water and land, it's one of the most adventurous formats in endurance sport — often set along wild shorelines and islands.
A continuous race alternating open-water swimming and running across a series of segments. Distances, format, and legs vary by event.
OTILLO Swimrun Casco Bay Islands
Aug 8, 2027