Rigby Lake Rumble 2023


July 8, 2023

Duathlon, Olympic Distance Triathlon, Race, and Sprint Triathlon

The RIGBY LAKE RUMBLE TRIATHLON will be held on Saturday, July 8th, 2023 at Jefferson County Lake in Rigby. In addition to there being both a SPRINT & OLYMPIC distance, we will also be having a KIDS Triathlon which will start as we get near the end of the SPRINT & OLYMPIC races.

The RIGBY LAKE RUMBLE TRIATHLON is usually our biggest triathlon of the year in Eastern Idaho! Come and Race with Tri Peaks Epic Events!


Course Description


The SWIM portion of the RIGBY LAKE RUMBLE TRIATHLON will begin on the west side of the lake, heading direct east, then head back west to another buoy on the north and then back directly south just west of the slide. The SPRINT racers will do 1 lap, and OLYMPIC racers will do 2. The KIDS will be a simple swim right along the buoy’s near the entrance/exit on the south/west portion of the lake. There will be Jefferson County Search & Rescue personnel and multiple kayaks/paddleboards on the reservoir for safety.


The BIKE section of the RIGBY LAKE RUMBLE TRIATHLON will be a mostly flat course for both the Sprint, Olympic & Kids races. The SPRINT & OLYMPIC course will begin with exiting through the parking lot of the lake (avoiding speed bumps!) onto Rigby Lake Road. It will continue down past 400 North and turn RIGHT just past Westmark Credit Union, onto Stockham Boulevard, then another RIGHT onto 3950 East (Annis Highway). Racers will continue until you have a LEFT turn onto 700 North (Menan/Lorenzo Highway). You will continue down to the base of the Annis Butte Cemetery for the SPRINT TURNAROUND. Sprint racers will follow this same path back to Jefferson County Lake. The OLYMPIC course continue around the North end of the Annis Butte along 700 North until they hit 3600 East and turn RIGHT and continue North to the North Menan Butte Trailhead. The turnaround point will be at the trailhead parking area, and then return on the same path back to Jefferson County Lake. There will be volunteers and police at all major intersections—Use CAUTION on all corners and watch for gravel, cattle, and random farm sprinklers! You will be coached on where to dismount your bike and get ready for your run. The KIDS bike course will exit the lake through the parking lot and continue down Rigby Lake Road, turn right on Stockham Boulevard to 3950 East (Annis Highway), and then another right turn onto 400 North, back to Rigby Lake Road and return to the transition area.


The RUN portion of the RIGBY LAKE RUMBLE TRIATHLON will begin from the bike transition area and make almost 1 loop around Rigby Lake to the main entrance/exit. Runners will continue down Rigby Lake Road. The SPRINT RUNNERS will turn around just in front of Point S. The OLYMPIC RUNNERS will continue past this point and turn right onto Stockham Boulevard and then another right onto 3950 North. Olympic runners will continue to the turnaround point at Junkhouse Road. There will be an additional aid station at this turn around. Please hydrate well racers! The KIDS run will be one complete lap around Rigby Lake. We will have volunteers at all major road crossings as well as the entrance back into Rigby Lake. Please be nice to other people using the walking path. Run hard…there is a FINISHER MEDAL waiting for you after you pass the FINISH ARCH!

Event Categories

There will be the following 6 categories in the SPRINT division of the race. There will be trophies for the OVERALL WINNER, and metal awards for both 1st and 2nd place in each of the categories for each division, for both men and women. Any category changes for participants must be handled by 12 pm Friday in order to get the information to the timing company.

Here are the 6 categories

  • YOUTH – 19 YRS OLD
  • AGE 20-29
  • AGE 30-39
  • AGE 40-49
  • AGE 50-59
  • AGE 60+


Stick around after the race as we will have an award presentation! Trophy’s will be awarded to the overall SPRINT, OLYMPIC & KIDS finishers& females, plus medals to the 1st and 2nd place finishers in each category for both male and female. There will also be some other great prizes and swag given away plus and additional trophy for the MICHAEL HAYES INSPIRATIONAL AWARD. Don’t miss this ceremony!

Volunteers like you make events like this possible

Jefferson County Lake
Rigby 83442

Course maps are subject to change dependent on approval with the city, county, or state.


We appreciate the sponsors for Tri-Peaks Events 2024

Rockwell Development

Sprint Sponsor

Performance Therapy

Swim Cap Sponsor

Leisure Time

Finish Towel Sponsor

Ball Ventures

Finish Line Medal Sponsor

Foothills Rehab

Elite Sponsor — Idaho Falls

Lookout Credit Union

Elite Sponsor — Rexburg

Fitzgerald’s Bicycles

Bike Category Sponsor

Shredded Nutrition

Transition/Stipper Sponsor

Bills Bike and Snow

Run Category Sponsor



Mike the Trainer Taylor

Hydration Station


Hydration Station


Hydration Station

Additional Sponsors

June Special!

Register now and get 10% off

Any SINGLE or TRIFECTA race registration

Sale ends June 30th