In 48 days · Sat, Sep 12, 2026
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Saturday, September 12th, 2026
Jackson Elementary School Fields, Jackson WY
5K · 10K
41–69°F · some rain risk
See last 10 years
Rained on 2 of the last 10 race days
2025
42–69°F
dry
2024
43–52°F
rain
2023
38–71°F
dry
2022
44–78°F
dry
2021
45–67°F
dry
2020
41–73°F
dry
2019
37–60°F
dry
2018
40–70°F
dry
2017
48–77°F
dry
2016
46–61°F
rain
Best months to race in Wyoming →
About this race
Old Bill's Fun Run
Old Bill’s Fun Run will start and end at Jackson Hole Elementary School field on Willow St on Saturday, September 12th. This year there will be a timed adaptive 5K & 10K, 5K & 10K timed run and an untimed FUN RUN/walk, as well as a highly competitive Diaper Derby. New this year: races will start at 8:30am with a staggered start by category. Winners of each race will receive prize money to donate to their favorite nonprofits. Costumes and showing spirit are highly encouraged.
REGISTRATION
- Cost: Registration is free!
- Deadline: Registration is open until 5:00pm on Friday, September 11th.
- On-site: You can register on race day morning at the start line arch.
- Note: Please help our team out by registering early! Only timed racers will receive a bib.
PRIZES
- Winners: First, second, and third place timed runners will win money to donate to their favorite Old Bill's participating nonprofits.
- Timed divisions: Adaptive 5K, Adaptive 10K, Youth 5K (<:14 years old), Women’s 5K, Men’s 5K, Women’s 10K, Men’s 10K.
TSHIRTS & BIB PICKUP
- Availability: Shirts are available starting August 14th at the new Community Foundation office (145 E Snow King Avenue).
- Race Day: Shirts will also be available at Jackson Elementary School Field (while supplies last).
- Bib pickup: Timed racers may pick up their bibs at the Community Foundation (145 E Snow King Avenue) between September 8-11, 9:00am - 5:00pm.
- On-run day: Bibs will also be available to pick up from 7:30 - 8:30am at the start line arch.
DONATE
To make a donation, go to oldbills.org/donate during the Giving Season: August 14-September 18.
EVENT SCHEDULE
- 7:30am: Fun Run Registration & Timed Run Bib pick-up
- 8:15am: Runner/walker warm up at start line
- 8:25am: Color Guard Ceremony and National Anthem
- 8:30am:
- Timed Adaptive Racers
- Timed Adult Racers
- Timed Youth Racers
- Fun Run/Walkers
Nonprofit booths open. Snacks served under big tent in center of field & DJ plays.
10:30am: Race winners announced & Diaper Derby at MC Stage
12:00pm: Event ends
PARKING
- Free Parking: Available at the Home Ranch Welcome Center lot at the intersection of Cache Street and Gill Avenue, two blocks northwest of the event.
- Handicap Parking: Available at the Jackson Elementary School parking lot: please DO NOT park in this parking lot otherwise.
ROUTE MAP
The Old Bill’s Fun Run start and finish are on Willow Street just north of the intersection at Deloney Street. Download Run Route Map
Only walkers, runners, strollers and mobility devices are permitted on the course. For safety, other wheeled transport (bicycles, skateboards, etc) is prohibited unless it is being used by a mobility guide.
Old Bill's welcomes dogs that are experienced and comfortable in crowds. Please keep them on a short leash and pick up after them. No other animals are allowed.
VOLUNTEER
Sign up to volunteer at oldbills.org
En español
(coming soon!)
Course map
Train with a club
Run clubs near Jackson to train with before race day.
See all run clubs near Jackson →Suggested Races
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