Odyssey Swimrun -
Now Ötillö Swimrun USA

Updated November 2025

Odyssey SwimRun was America's original Swimrun organiser.

Odyssey was acquired by the original swimrun company Ötillö in 2023, and the races are now run under the Ötillö Swimrun USA banner.

Below is a cool car registration plate owned by Aaron Palaian of Odyssey, promoting the sport of swimrun; Aaron's main goal was to remember his car plate number - but promoting the sport is an added bonus!

A car Licence Plate reading SW1MRUN, from Michigan, with an artist's impression of the Mackinac bridge.

credit to Aaron Palaian of Ödyssey swimrun

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All the usual swim aids are allowed - hand paddles, pull buoys, wetsuits - and any hydration and race fuel must be carried throughout the race. It can make a real difference having the right team mate and equipment as you can find out reading other pages on this site!

Ötillö Swimrun USA are taking Odyssey into their 7th year in 2026.

The Races

Check our up-to-date Swimrun event calendar for the USA 2026 here!

Races now held in 2026 by Ötillö Swimrun USA are:

Casco Bay Islands
Orcas Island
Austin Pace Bend
Colorado

The Odyssey races previously run at Ludington and Les Cheneaux are no longer being held, and previous Otillo events at Whistler, Mackinac and Catalina Island are not scheduled for 2026.

Odyssey Swimrun Events

Below you can find details of Odyssey (now Otillo Swimrun USA) events:

Catalina Island

Date: NOT 2026

Venue: Catalina Island, California

According to the Otillo website:

"ÖTILLÖ Catalina Swimrun is back. This event features a challenging course across the scenic terrain of Catalina Island, a rugged and remote island just 21 nautical miles off the California coast. With a 650-meter vertical drop from the highest point of the island to the water, the views will stun participants. Get ready for tranquil bays, pebble beaches, and crystal-clear waters teeming with fish."

More information at our Catalina Island page.

Whistler

Date: NOT 2026

Venue: British Columbia, Canada

Set in the mountains of BC, two hours north of Vancouver, Whistler is a famous resort, for good reason. Here the swimming sections are across cold glacier-fed lakes. The running sections take in roads, single track trails, jumping off docks and some rock scrambling.

The water temperatures can vary between 12C and 16C, while air temps at this time of year range from 11C to 27C - that's a BIG range!

There are THREE events on offer, and you can take part either as a SOLO racer or as part of a team of 2; the World Series races are the longest. The Sprint distance os more maneageable for most of us, and the Experience distance is the shortest, giving you a taster of this sport. The swim to run ratio varies from 1:5 for the World Series race, to 1:4 for the Sprint, and down to 1:9 for the Experience.

World Series

Swim: 7.5km

Run: 32.8km

Total Distance: 40.3km (25 miles)

Sprint Distance

Swim: 3.8km

Run: 13.15km

Total Distance: 16.9km (10 miles)

Experience Distance

Swim: 1.1km

Run: 8.85km

Total Distance: 9.9km (6.2 miles)

More information at our Whistler page.

Casco Bay

DATE: Sunday, August 9th 2026

VENUE: Casco Bay Islands, Portland, Maine

The Casco Bay Swimrun is also known as the Cole Classic in memory of co-founder Jeff Cole. This is America's original Swimrun event. Odyssey Swimrun (formerly Swimrun USA) brought this exciting sport to the states.

2024 will be the event's 8th year and the organizers say it is set to be the best! The east coast is stunning with a course full of amazing bay views and historic buildings and forts.

Be prepared for a variety of terrain from trails, grass, pavement and slippery boulders when the tide is low, together with cool, crisp salt waters! Currents can be strong with choppy water and sea swells.

Click below to watch the official Race Video 2019 for the Odyssey SwimRun Casco Bay Islands:

World Series- team or solo

Swim: 8km

Run: 29km

Total Distance: 37km

Sprint distance- team or solo

Swim: 3.2km

Run: 17.3km

Total Distance: 20.5km

Experience distance- team or solo

Swim: TBA

Run: TBA

Total Distance: TBA

More information at our Casco Bay race page.

Mackinac SwimRun

DATE: NOT 2026

VENUE: Mackinac Island, Lake Huron, Michigan

view over green gardens to a small marina with white boats in a harbor at Mackinac Island, Michigan, on a sunny day, with blue water and a blue sky.

The beautiful Mackinac Island

This was a new event in 2021!

Mackinac Island is as rich in history as it is in beauty. Located just northeast of the Mackinac Bridge In Lake Huron, Mackinac Island offers a unique opportunity for both family and friends to experience race weekend like never before.

Mackinac City's downtown area offers a variety of things to do for people of all ages and trails and waters around this pristine island offer a vast playground for SwimRunners looking to stretch their legs on a new course that's challenging and breathtakingly beautiful.

There are no vehicles allowed on the island. Your legs, bikes, and horses are the modes of transportation after you take the ferry from the mainland to get there.

A man with a yellow float tied to his waist and his arms held up walking down a jetty towards a boat shed, with blue sky in the background.

Adventure awaits on Mackinac Island!

World Series- team and solo

Swim: 5km

Run: 21km

Total Distance: 26km

Sprint distance- team and solo

Swim: 3.2km

Run: 18.5km

Total Distance: 21.7km

Experience- team and solo

Swim: TBA

Run: TBA

Total Distance: TBA

More information at our Mackinac Island race page.

Orcas Island SwimRun

DATE: Sunday, June 14th, 2026

VENUE: Orcas Island, San Juan Islands, Washington State

Established in 2018, this is a unique and beautiful course in the San Juan chain of islands in Northwest Washington State. Look out for big climbs and descents and single tracks running through thick forests. The course includes crystal clear inland waters as well as a picturesque ocean cove. Certainly a race to 'get back to nature'!

Click below to watch the Official Race Video of the Odyssey Orcas Island Swimrun:

World Series- team and solo

Swim: 5.5km

Run: 35km

Total Distance: 40.5km

Sprint distance- team and solo

Swim: 3.2km

Run: 17km

Total Distance: 20.2km

Experience- team and solo

Swim: TBA

Run: TBA

Total Distance: TBA

More information at our Orcas Island race page.

Colorado

DATE: October 4th, 2026

VENUE: Soldier Canyon Event Facility, 708 Lodgepole Dr., Bellvue

Horsetooth Reservoir and Lory State Park are ideal locations for a Swimrun event due to their scenic and varied landscapes. The event offers a combination of open-water swimming in the reservoir and trail running through Lory State Park’s diverse trails, which cater to different skill levels and provide breathtaking views.

The proximity of these two venues allows for a seamless transition between swimming and running, making it an exciting and challenging experience for participants and providing event organizers with access to amenities and support infrastructure.

World Series- team and solo

Swim: 8 km

Run: 29.7 km

Total Distance: 37.8 km

Sprint distance- team and solo

Swim: 4.8 km

Run: 17.7 km

Total Distance: 17.7 km

Experience- team and solo

Swim: 2.4 km

Run: 7.2 km

Total Distance: 9.6km

Austin Pace Bend

"Welcome to Texas Hill Country!"

DATE: Sunday, November 8th, 2026 TBC

VENUE: Pace Bend Park, Spicewood, Texas (Austin City Limits)

Two swimrun competitors at the Odyssey Austin 2022 event

Odyssey Swimrun Austin

A stone's throw from Austin, nestled in Texas Hill Country between the Baldcypress and Sycamore trees, sits Pace Bend Park. A rustic beauty with single track forest trails, shoreline rock formations and cliff jumps into the refreshing Colorado River. The perfect Texas-sized end to the Odyssey Swimrun season.