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Diamond Mountain Triathlon (USAT Sanctioned)

Sun September 20, 2026
Stony Point, NY 10980 US Directions

Elite/Advanced Triathlon (0.5mi/15mi/2mi) First Waves

0.5mi swim in Lake Welch
15 miles bike around Harriman Park (1 lap)
2 miles run on paved road with some gravel sections
Athletes who want a competitive start and expect to race independently - first waves start
Start Time:
11:30am EDT
End Time:
1:50pm EDT
Registration:
Online Registration is Closed

Online Registration has Ended.

Open/Family Triathlon (0.5mi/15mi/2mi) Last Wave with personal buoys allowed

0.5mi swim in Lake Welch
15 miles bike around Harriman Park (1 lap)
2 miles run on paved road with some gravel sections
For juniors, athletes who prefer the second wave, friends and family members who would like to start together.
Start Time:
11:30am EDT
End Time:
1:50pm EDT
Registration:
Online Registration is Closed

Online Registration has Ended.

Junior Triathlon (0.5mi/15mi/2mi) Last wave by default

Starting and scored with adults
0.5mi swim in Lake Welch
15 miles bike around Harriman Park (1 lap)
2 miles run on paved road with some gravel sections
You can ask to move you to first wave before registration is over and we will do our best to move you
Open to ages 14 - 18.
Start Time:
11:30am EDT
End Time:
1:50pm EDT
Registration:
Online Registration is Closed

Online Registration has Ended.

Adult Duathlon (2mi/15mi/2mi)

2 miles run on paved road with some gravel sections
15 miles bike around Harriman Park (1 lap)
2 miles run on paved road with some gravel sections
Start Time:
11:30am EDT
End Time:
1:50pm EDT
Registration:
Online Registration is Closed

Online Registration has Ended.

Junior Duathlon (2mi/15mi/2mi)

Starting and scored with adults
2 miles run on paved road with some gravel sections
15 miles bike around Harriman Park (1 lap)
2 miles run on paved road with some gravel sections
Open to ages 14 - 18.
Start Time:
11:30am EDT
End Time:
1:50pm EDT
Registration:
Online Registration is Closed

Online Registration has Ended.

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