Mountain Swim Series

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Mountain Swim Series With the aim of promoting fitness and health through open water swimming.

The Mountain Swim Series offers flexibility, competition and an overall enjoyable swimming experience. We have FIVE open water swims this year, and we can't wait to see you out there.
-Sunday June 5th -- Chilly Chatfield
-Sunday June 19th -- Solstice Sunset
-Saturday July 16th -- Carter Lake Crossing
-Sunday July 31st -- Chatfield Classic
-Saturday August 27th -- Castle 5k/10k
Register Here: https://mountainswimseries.com/

All events will be supported by safety watercraft, lifeguards, and paramedics/EMTs.

And that's a wrap! Thanks to everyone who came out to Wellington Lake this year! The Castle swimmers and swim-runners al...
08/26/2026

And that's a wrap! Thanks to everyone who came out to Wellington Lake this year! The Castle swimmers and swim-runners all did fantastic! Thank you Volunteers!!!

Registration closes TOMORROW (8/19) for all the Wellington Lake events!Register online for all the fun!Castle 2.5K/5K/10...
08/18/2026

Registration closes TOMORROW (8/19) for all the Wellington Lake events!

Register online for all the fun!
Castle 2.5K/5K/10K
Wellington Swim Run
Camping options available at the swim location!
https://mountainswimseries.com/events/castle-10k

Thanks to all who helped at Willow Creek this last weekend! Congrats to all the swimmers! Here are some photos from Cart...
08/05/2026

Thanks to all who helped at Willow Creek this last weekend! Congrats to all the swimmers!

Here are some photos from Carter Lake swim this summer to keep you excited about our upcoming and FINAL swims! The weekend of August 21st will be all of the Wellington Lake swims.

Our final weekend of swimming this summer will be out at Wellington Lake and you can sign up for: 2.5K, 5K, 10K, and our fun Swim-Run challenge! There are camping options throughout the weekend that you can reserve with our swim location as well. Check out the registration page for all of the details!

We're looking forward to the Willow Creek Swims this Saturday! Unlike most of the reservoirs in the state, the water lev...
07/30/2026

We're looking forward to the Willow Creek Swims this Saturday!

Unlike most of the reservoirs in the state, the water level in Willow Creek Reservoir is high and the temperatures are expected to be in the low 70s.

For all of those who joined us at Carter Lake, thank you for swimming and volunteering. We had a great day!!

Out of Breath Sports has been helping us get all the shirts ready for our events that Elliot Lang has designed for our 2...
07/10/2026

Out of Breath Sports has been helping us get all the shirts ready for our events that Elliot Lang has designed for our 2026 swim series! 🙌

Carter Lake Crossing registration closes next Wednesday, July 15th! If you cannot swim this year, come out and support f...
07/09/2026

Carter Lake Crossing registration closes next Wednesday, July 15th! If you cannot swim this year, come out and support fellow swimmers by volunteering with us! Volunteer info and Racer info can be found on our site! Looking forward to a great event!

https://mountainswimseries.com/events/carter-lake-crossing

Congratulations to all of the swimmers who came out to our first swim of the season! Solstice Sunrise was a great first ...
06/24/2026

Congratulations to all of the swimmers who came out to our first swim of the season! Solstice Sunrise was a great first event for our Mountain Swim Series!

Next up: Carter Lake Crossing on July 18th!

Thank you to our Sponsors this year SwimTrek!

SwimTrek is the world's leading provider of swimming holidays, with swim tours in some of the best open water swimming locations around the world.

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Denver, CO

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