RunRace USA › New York › Diamond Mountain Triathlon (USAT Sanctioned)
Diamond Mountain Triathlon (USAT Sanctioned)
Stony Point, New York · Sunday, September 20, 2026 · 17.5 Miles, 19 Miles
Official race page & registration ↗Diamond Mountain Triathlon (USAT Sanctioned) takes place on Sunday, September 20, 2026 in Stony Point, New York. The race offers 2 distances: 17.5 Miles, 19 Miles. It is run on trail. For anyone travelling in, New City is about 6 miles away and Yonkers is about 21 miles away.
It is one of 247 races on the New York calendar that September. At $90, entry sits above the $33 median for a New York race.
- Date
- Sunday, September 20, 2026
- Location
- Stony Point, New York
- Distances
- 17.5 Miles, 19 Miles
- Surface
- Trail
- Entry fee
- from $90
Listing from the 2026 race calendar, refreshed nightly. Details can change: confirm date and entry on the official race page before travelling. Spot an error? Tell us here.
Making a race weekend of it?
Stay near the start line in Stony Point: check in Sep 19, out Sep 21.
Common questions
When is Diamond Mountain Triathlon (USAT Sanctioned)?
Diamond Mountain Triathlon (USAT Sanctioned) is scheduled for Sunday, September 20, 2026.
Where is Diamond Mountain Triathlon (USAT Sanctioned) held?
Diamond Mountain Triathlon (USAT Sanctioned) is held in Stony Point, New York. It is about 6 miles from New City and 21 miles from Yonkers.
What distances does Diamond Mountain Triathlon (USAT Sanctioned) offer?
The listed distances are 17.5 Miles, 19 Miles.
How much does Diamond Mountain Triathlon (USAT Sanctioned) cost?
Entry is listed from $90. Check the official race page for the current price, which usually rises closer to race day.
How do I register for Diamond Mountain Triathlon (USAT Sanctioned)?
Registration is handled on the official race page, linked at the top of this listing. Entry can close early if the race sells out.
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See every race on the New York calendar, or use the Race Finder for maps and filters.