Boulder Stroke & Stride
Events
| Sprint Aquathlon : Swim 800 meters, Run 3.1 miles |
| Stroke & Stride Aquathlon : Swim 1600 meters, Run 3.1 miles |
| 1/2 Mile Swim : 800 meters |
| 1 Mile Swim : 1 mile Swim |
| 5K Run : Run 3.1 miles |
- Race Date: Thursday, June 18, 2026
- Location:Boulder Reservoir
- Address: 5565 N 51st St.
- City/State/Zip:Boulder, Colorado 80301
- Country: USA
2026 Boulder Stroke & Stride Swim/Run Series:
The 2026 Boulder Stroke & Stride Series
June 4th, June 10th (Wednesday), June 18th, June 25th, July 9th, July 16th, July 23rd, July 30th, August 6th
PLEASE NOTE THAT WEEK 1 & 2 ARE PRE-REGISTRATION ONLY WITH LIMITED SPACE. If you purchased a 6-pack this season, you MUST use the code we sent via e-mail to register for each individual night.
The Boulder Stroke & Stride enters its 25th season in 2026, and offers Boulder area athletes a fun 1-lap 750 Meter Swim, or 2-Lap 1500 Meter swim in Boulder Reservoir, followed by a 5k run on the reservoir dam on 8 Thursday evenings (plus one Wednesday evening) throughout the summer. Many participants make their open-water swimming debut in the beginner-friendly Stroke & Stride 750 meter event, while more seasoned athletes get the thrill of starting alongside some of the top athletes in the world in the 1,500 meter swim. 250-400 participants enjoy the Stroke & Stride every week! Live timing, great post race food, beanie for 6-pack entries, and series prizes are just the beginning!
Course Information:
-:- course maps
Directions:
DIRECTIONS TO BOULDER RESERVOIR
BOULDER: Take 119 towards Longmont. Take a left on Jay rd and then you're first right on 51st. Proceed down 51st and then take a right into the reservoir. At the gate entrance please let them know you're a Stroke & Stride participant.
LONGMONT: Take 119 towards Boulder. Take a right on Jay rd and then you're first right on 51st. Proceed down 51st and then take a right into the reservoir. At the gate entrance please let them know you're a Stroke & Stride participant.
Boulder Reservoir
• 5565 N 51st St
• Boulder, CO
• 80301
• Map & Directions
Previous Results:
-) 2025 Race Results at RaceResult.com:
• 2025 Results: Series Points
• Race #1 Results: June 5th
• Race #2 Results: June 11th
• Race #3 Results: June 19th
• Race #4 Results: June 26th
• Race #5 Results: July 10th
• Race #6 Results: July 17th
• Race #7 Results: July 24th
• Race #8 Results: July 31th
• Race #9 Results: Aug 7th
2024 Results at raceresult.com:
• 2024 Results: Series Points
• Race# 10 Results: August 08
• Race # 9 Results: August 01
• Race # 8 Results: July 25
• Race # 7 Results: July 18
• Race # 6 Results: July 11
• Race # 5 Results: June 27
• Race # 4 Results: June 20
• Race # 3 Results: June 13
• Race # 2 Results: June 06
• Race # 1 Results: May 30
2023 Results at: raceresult.com:
• 2023 Results: Series Points
• Race # 9 Results: August 03
• Race # 8 Results: July 27
• Race # 7 Results: July 20
• Race # 6 Results: July 13
• Race # 5 Results: June 29
• Race # 4 Results: June 22
• Race # 3 Results: June 15
• Race # 2 Results: June 07
• Race # 1 Results: June 2
2022 Results at: raceresult.com:
• 2022 Results: Series Points
• Race # 9 Results: August 03
• Race # 8 Results: July 28
• Race # 7 Results: July 21
• Race # 6 Results: July 14
• Race # 5 Results: July 07
• Race # 4 Results: June 23
• Race # 3 Results: June 16
• Race # 2 Results: June 09
• Race # 1 Results: June 2
2021 Results at: raceresult.com:
• 2021 Results: Series Points
• Race # 9 Results: August 4
• Race # 8 Results: July 29
• Race # 7 Results: July 22
• Race # 6 Results: July 15
• Race # 5 Results: July 08
• Race # 4 Results: June 24
• Race # 3 Results: June 17
• Race # 2 Results: June 10 ?
• Race # 1 Results: June 3 ?
2020 Results at: raceresult.com:
• 2020 Results: Series Points
• Race # 5 Results at: raceresult.com August 27
• Race # 4 Results at: raceresult.com - August 20
• Race # 3 Results at: raceresult.com - August 13
• Race # 2 Results at: raceresult.com - August 06
• Race # 1 Results at: raceresult.com - July 30
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