Rigby Lake Rumble Triathlon

JUL

11

2026

Join the Rigby Lake RUMBLE Triathlon on July 11 2026 at Jefferson County Lake for sprint and Olympic distances plus runs and two person teams. Expect a flat, fast course, comfy lake swims, and supportive volunteers.

Sat 11 Jul 2026

Rigby, Idaho

Registration

5k Run 10k Run 25.7 Km 27.5 Km

Always double-check with the organizer's website! This page may contain affiliate links.

Rigby Lake RUMBLE Triathlon - Event details

The Rigby Lake RUMBLE Triathlon takes place on 11 July 2026 at Jefferson County Lake, 490 N 4000 E, Rigby, Idaho 83442. The event is produced by Tri Peaks Epic Events. Race categories listed include Sprint Distance, Olympic Distance, Duathlon - Sprint, Duathlon - Olympic, 5K run, 10K run, and a two-person Sprint Team category.

Distances shown for the event include:

5 km
10 km
25.7 km
27.5 km
50 km
51.5 km

Course and participant information

Past participant reviews on the event page give an overall rating of 5.0 from four reviews. Reviewers described the course as flat for both the bike and run portions, noted the lake temperature was comfortable for swimming, and reported positive interactions with volunteers and organizers. A course map is provided by the organizer. Visit the organization's website for the most recent information.

52 km

51.5 Km

50 km

28 km

27.5 Km

26 km

25.7 Km

10 km

10k Run

5 km

5k Run