Mountain Swim Series 2018

in United States at Various Colorado Locations

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EVENT 1: Solstice Sunset Swim (June 23)

The Solstice Sunset Swim is a swim created in cooperation with the City of Longmont. Participants have the opportunity to swim either a 1.2 mile race or a 2.4 mile race as the sun is going down.

Awards will be given out to the top three finishers in each division for each race.
Divisions will be both non-wetsuit and wetsuit for both men and women.
Hope to see you in the water!

Union Reservoir
461 County Road 26
Longmont, CO

1.2 mile ($45)
2.4 mile ($55)

1.2 and 2.4 mile races start at 6:00 PM, please be at least 45 minutes early for packet pickup.

*both events held at same time

EVENT 2: Carter Lake Crossing (July 21)

The Carter Lake Crossing is a point to point crossing of Carter Lake in Colorado.
Situated at just below 5800 feet, this nearly 3 mile swim is located in one of the most picturesque lakes in Colorado.
Awards will be given out to the top three finishers in each division for each race.
Divisions will be both non-wetsuit and wetsuit for both men and women for each race.
Hope to see you there!

Carter Lake
Park at South Campground Parking

Single direction point to point swim - 3 miles ($75)

Packet pickup will begin at 5:00 AM, we recommend being there over an hour early to get a seat on the busses, which will leave at 5:45 and 6:30

EVENT 3: Chatfield Classic (August 19)

The Chatfield Classic was a new event in 2017.
It will consist of a 1 mile swim followed by a 2 mile swim.
In between the two races, there will be a short break to allow people to warm up, warm down and rest. Participants who have not swam at the Chatfield gravel pond in the past should be aware that there is a gravel bar in the middle of the lake.
The gravel bar can create some shallow and slightly technical swimming, and also adds some race character.
This event will be limited to 250 total participants.

Participants may sign up for either the 1 mile swim, 2 mile swim or both.
It will be the last event of the year for the Swim Series and overall series winners will be announced at this event.

Chatfield Lake Gravel Pond, Littleton, CO
When: 7:00 AM
Sunday August 19, 2018

1 Mile ($45)
2 Mile ($55)
Both Distances ($75)

Time cut-offs:
All swimmers must be capable of completing the distance you have entered and must be able to complete your respective event within the given cut-off time.
1 Mile - 1 hour
2 Miles - 2 hours

Each individual event will be a mass beach start.
Depending on the number of participants, there may be waves of people sent based on expected speed. People registering day-of will be included in the last wave.

Packet Pickup
Race packet pickup will begin at 5:00 AM.
Race day registration will be available if less than 250 people have signed up.

The 1 mile swim is 1 lap, the 2 mile swim is 2 laps


If you would like to volunteer, please see details at the following location:


For event-related questions, please click on the Contact the Organizers button on the left-hand side of this page.

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