Rigby Lake Rumble Triathlon

The RIGBY LAKE RUMBLE MULTI-SPORT EVENT returns on Saturday, July 11th, 2026, at beautiful Jefferson County Lake in Rigby, Idaho—and it continues to be one of the most athlete-friendly events on the Tri Peaks Epic Events calendar. Ths event is produced by Tri Peaks Epic Events, LLC. Formerly known as the Rigby Lake Rumble Triathlon, this beloved race has expanded into a true multi-sport event, offering options for first-time racers, families, and competitive athletes alike. At all Tri Peaks Epic Events, you can expect a clearly marked course, friendly volunteers, and an encouraging race-day atmosphere that helps you feel confident from start to finish. A Perfect Race for First-Time Athletes If you’re new to endurance racing, this is one of the best events to start with: Calm, clean lake water Extremely flat bike and run courses A relaxed, fun, and supportive race-day atmosphere Choose the race that fits you best: Sprint Triathlon – Short distances and a great first triathlon Olympic Triathlon – A fast, flat course for experienced racers Sprint Duathlon – Run–Bike–Run (no swimming required) Olympic Duathlon – A longer challenge on the same flat course—Run-Bike-Run 5K Run – Perfect for beginners, walkers, and families 10K Run – Step it up and chase a PR Whether you’re racing solo, with friends, or cheering from the shoreline, there’s a place for you at the RUMBLE! The Famous Rumble Slide (Yes—There’s Swag!) One of the most unique traditions in local triathlon is back: 🏊‍♂️ Slide down the slide as you exit the swim and earn a BONUS swag item! It’s fun. It’s optional. And it’s one of the reasons athletes come back year after year. Rigby Lake Rumble KIDS Triathlon Kick off the weekend with the Rigby Lake Rumble Kids Triathlon, held the evening before the main event. This race is designed to be: Safe Fun Encouraging A memorable first triathlon experience It’s the perfect way to introduce kids to multi-sport racing and make race weekend a family celebration. A Longtime Favorite for a Reason The RIGBY LAKE RUMBLE has been a favorite for many years thanks to: Smooth, fast courses Beautiful lake venue A welcoming community vibe Events for all ages and ability levels Whether this is your first race or your tenth season, the RUMBLE is a must-do summer event. Join us at the RIGBY LAKE RUMBLE MULTI-SPORT EVENT!