TYathlon Sprint Triathlon & 5K is a triathlon and running race on September 19, 2026 in Mahopac, NY, with entry fees from $45 to $160.
From the Organizer
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.
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.
Events
Weather
It's too far out for a forecast, so here's what weather on this date is normally like in the area. A race day forecast will replace this as race week approaches.
Typical High
74°
Typical Low
51°
Based on US Climate Normals data from Shrub Oak, 6 mi from the venue.
Host City
City Elevation
667 ft
Nearest Airport
SWF
New York Stewart International Airport · 21 mi
Major Hub
LGA
LaGuardia Airport · 42 mi
Time Zone
Eastern Time
From Endurance Grid
Line up lodging and travel early to lock in your race weekend.
Race Location
Your Next Start Line
Every finish line starts with a single decision. Claim your spot at TYathlon Sprint Triathlon & 5K, put it on the calendar, and turn “someday” into a start date.
65
Days to train
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From Endurance Grid
This race spans more than one sport — here’s a guide to each, so you can understand what’s involved and decide if it’s the right fit. For course distances, logistics, and race-day specifics, always defer to the race organizer’s event page.
Swim, bike, run — back to back. The sprint distance makes it far more accessible than most people think. Three sports in one race means three movements to train and race day never gets monotonous.
From 5K to marathon, running races are an accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Coming Up
TRI the PARK Tarrytown
22 miles away
West Point Youth Triathlon
16 miles away
West Point Triathlon
16 miles away
Runner's Edge - TOBAY Triathlon & Junior Triathlon
37 miles away
Plan your trip
Coming from out of town? There's more to Mahopac than race day. We'll help you line up nearby lodging, flights, a rental car, and things to do so you can make the most of your racecation.
Plan your trip to MahopacFrequently Asked Questions (FAQs)
TYathlon Sprint Triathlon & 5K
Sep 19, 2026