TYathlon Sprint Triathlon & 5K
Mahopac, NY
Sat, Sep 19, 2026
In 14 days · Sat, Sep 19, 2026
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Saturday, September 19th, 2026
1 Marina Drive, Mahopac NY
58–74°F · low rain risk
See last 10 years
On this date: rain 2 of the last 10 years
2025
62–78°F
dry
2024
59–83°F
dry
2023
54–70°F
dry
2022
63–82°F
rain
2021
58–72°F
dry
2020
44–60°F
dry
2019
48–68°F
dry
2018
65–76°F
dry
2017
64–75°F
dry
2016
68–72°F
rain
Best months to race in New York →
Race-day forecast · Saturday, Sep 19
Cloudy · 59–63°F
Saturday, Sep 19starts near 59°F · 10% chance of rain · wind up to 7 mph
About this race
Event Overview
Swim, bike and run around beautiful Lake Mahopac in support of childhood cancer research. If a sprint triathlon is not your speed, join us for our 5K! The 5K is family-friendly, and allows for strollers on the course. The sprint triathlon brings together a combination of seasoned pros (our elite field is fierce!) as well as many beginners who are just getting their start in the triathlon world. It is typically a gorgeous morning with perfect fall-like weather in the Hudson Valley.
Event Details
- Date: 2026-09-19
- Location: 1 Marina Drive, Mahopac, NY
- Race URL: TYathlon Sprint Triathlon & 5K
Support for Childhood Cancer
This is our 14th year of celebrating the important work being done to help change the landscape for children diagnosed with cancer. All proceeds support the Ty Louis Campbell Young Investigator Fund at New York-Presbyterian Weill Cornell.
Course map
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