Rigby Lake Rumble Triathlon

The Results Are In!

July 12, 2025

Sprint Triathlon, Olympic Triathlon

STAY TUNED! Much of the information here is based off of last year’s event and is subject to change.

The RIGBY LAKE RUMBLE TRIATHLON will be held on Saturday, July 12th, 2025 at Jefferson County Lake in Rigby. In addition to there being both a SPRINT & OLYMPIC distance race, we will also be having a KIDS TRIATHLON on the same day.

The RIGBY LAKE RUMBLE TRIATHLON has been a favorite of MANY for the past MANY years! The water in the lake is amazing, and both the bike and run courses are extremely FLAT!

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ALL DETAILS, MAP, AND SCHEDULING ARE SUBJECT TO CHANGE

Event Schedule

FRIDAY AFTERNOON

12-2 pm – Packet Pickup @ WRIGHT PHYSICAL THERAPY –494 Pleasant Country Lane, Rigby, ID 83442

4 – 6 pm — Packet pickup at Rigby Lake –Look for our tent and flags—if you do NOT want to pay to enter the Rigby Lake area, simply call us and we will run the packet out to you at the park entrance—-our numbers are below.

SATURDAY MORNING

6:00-6:30 am – Late Packet Pickup @ Rigby Lake
6:00-6:45 am – Staging of Bikes (Closes PROMPTLY @ 6:45am)
6:30 – am — Volunteer Coordination Meeting
7:00-7:15 am — MANDATORY Race Participant Meeting

7:20 am – National Anthem
7:30 am – Olympic Swim Start
8:15 am – Sprint Swim Start

9:15 am – Kids Triathlon Swim Start
11:00 am – Awards Ceremony

RIGBY LAKE ENTRANCE & PARKING—If you do not have a season pass to get in or do NOT want to pay to get your PACKET PICKUP on Friday, simply call us and we will run it out to you.  Each racer will receive 1 FREE VEHICLE PASS for the race Saturday in your race packet.  We ask that all additional vehicles pay the gate fee as this supports improvements to the amazing Rigby Lake facilities. Please do NOT park in the finish line area by the large shelter.

Staging of BIKES / TRANSITION AREA will be Saturday morning from 6 – 6:45 am. An ALL PARTICIPANTS MANDATORY RACE MEETING will be held that morning at 7 am.

Here are a couple things to remember–

  • WETSUITS are highly recommended!
  • NO MUSIC is allowed on the course for any of the events
  • BE SAFE—there are a few challenges on this rural course so please be cautious

Watch our FACEBOOK page for upcoming SWIM/BIKE/RUN trainings that will be held in coming weeks & months!  Here is the link:  https://www.facebook.com/TriPeaksEvents

If you have any questions / concerns on the upcoming RIGBY LAKE RUMBLE TRIATHLON, please contact your race directors:

Bryan Magleby – 208-520-9400 or Mike Taylor – 208-201-6269 or email us TriPeaksEpicEvents@gmail.com

Course Description

Updated 7/3/2024
SWIM—The swim will start @ 8:15 am on the SOUTH/WEST side of Jefferson County Lake. You will swim straight EAST to a buoy making a LEFT turn and swim to the NORTH to make another LEFT turn, then SOUTH toward the slide. Now you have the BIG DECISION—do you take the slide or not??!! There is a BONUS prize if you do! Head to the beach where, if desired, strippers will assist you in taking off your wetsuit!
BIKE—Once you exit the transition area, you will mount your bike (helmet MUST be clipped) and exit the parking lot SOUTH. You will exit Jefferson County Lake and head SOUTH on Rigby Lake Boulevard/4000 East. You will continue until you hit 400 NORTH where you will turn RIGHT heading WEST. You will continue until you until you hit 3600 EAST where you will make a RIGHT turn for 1 mile to 500 NORTH, making another RIGHT turn and continuing EAST until you hit 3900 EAST, making another right turn for 1 mile and turning LEFT on 400 NORTH where you will then follow the same path, returning to Jefferson County Lake after turning LEFT on Rigby Lake Boulevard/4000 EAST. Use caution when entering through the EXIT lane at the entrance gate, then back to the transition area. REMINDER— ONLY make a turn IF there is a VOLUNTEER telling you to YIELD to traffic at all times and use CAUTION as there are some roads where the cross traffic does NOT stop. There is just 1 AID STATION on the bike on the corner of 3600 EAST & 500 NORTH with bottles of H2O. THANK the volunteers as you pass!
RUN—You will exit the transition area to the WEST and make a loop on the bike/walking path on the NORTH side of Jefferson County Lake. As you approach the Entrance/Exit gate, there will be an AID STATION with H2O/Gatorade and energy bars. You will continue down RIGBY LAKE BOULEVARD/4000 EAST until you hit POINT S TIRE where you will have AID STATION 2, turning around and heading back to Jefferson County Lake.
Always run on the right. Stay to the right all possible as there will also be bikes passing on the same road. Once you enter the lake area, return to the walking/bike path heading WEST…turn on the heat and head to the FINISH LINE ARCH…there will be ice towels, drinks, fruit and family/friends waiting for you to raise your hands as you cross the FINISH LINE… Great Job!

Race Distances

Triathlon
Olympic 1.5km swim · 40km bike · 10km run
Sprint 750m swim · 20km bike · 5km run
Duathlon
Olympic 10km run · 40km bike · 5km run
Sprint 5km run · 20km bike · 2.5km run
Run
Olympic 10km run
Sprint 5km run

* Distances may vary slightly per race depending on course.

Event Categories

⚠️ Category changes must be completed by 5 PM on the day prior to race day to ensure accurate timing & results.

  • 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+

Awards

Stick around after the race as we will have an award presentation! Trophy’s will be awarded to the overall SPRINT & OLYMPIC  finishers, 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!

Don’t miss the awards ceremony—it’s a highlight of the event!

Volunteers like you make events like this possible

Jefferson County Lake, Rigby, 83442

Sponsors

We appreciate the sponsors for Tri-Peaks Events 2026

YOUR
LOGO
HERE

Title Sponsor

Teton Auto Group

Title Sponsor

Dave's Bike Shop

Bike Sponsor

Teton Running

Run Sponsor

The Vital Stretch

Sprint Sponsor

Happy Teriyaki

Sprint Sponsor

Rockwell Development

Elite Sponsor - Great Snake

XTERRA Wetsuits

Wetsuit Sponsor

Citizens Community Bank

Hydration Station

TRC Fabrication

Trophy Sponsor

Leisure Time

Finish Towel Sponsor

True Fitness

Stripper

Motion Focused Pediatry

Finish Line Sponsor

Wakeside Lake RV Park

Location - Rexburg Rush

Factory EV

Location - Rexburg Rush

EvoCom Security

Location - Rexburg Rush

Snake River Landing

Location - Great Snake

Lookout Credit Union

Elite Sponsor — Rexburg

Fitzgerald’s Bicycles

Bike Category Sponsor

Pepsi

Hydration Station

Post Race Booth Sponsors

Additional Sponsors

This is a past event. See this year's races →

NEW IN 2026 All races will be MULTI-SPORT EVENTS!

Triathlon

Duathlon

5K/10K Run