The "ROCKIN' RIVERFEST" 5k, 10K, Half Marathon & Fun Run!
About this race
Welcome to the the Rockin' Riverfest 5k,10k Half Marathon and Fun Run!
The Rockin' Riverfest is a fun, flat, fast, family friendly event taking place on Saturday Morning July 4th. The Parade starts at 10:00 this year so run it and stick around for the Parade!
Starting at 7:30am. Race/Run/Jog or Walk starting on the Katy trail through the Shady single track trails right beside the beautiful Missouri river. Pass the water/aid station at mile 1.5 (also mile 4 and 5 for the 10K and double that for the Half)
For registering, you not only get a super fun Race/Run/Walk through the historic district and all the action of Riverfest on the Riverfront, you get a custom finishers Rockin' Riverfest T shirt, (Shirts guaranteed to those that register by June 15) Racers Village Colas, Sports drink, Race Snacks, Professional race Timing, Instant Results, Timed Splits, Custom Bib Number, and FINISHERS MEDAL! The race also includes Free downloadable finish line pics and video. Whew! Awards Ceremony on Podiums. Water/Sports drink and Ice at aid stations and Racers Village. 10k and 13.1 see an additional aid stations. Music rocking at racer village!
Cheer on your friends and family! A great way to kick off your July 4th festivities. After the race, stick around and make a day of it enjoying the Parade, Historic riverfront shops, Historic St Charles and all of the Riverfest activities! Bring the Friends and Fam!
The full Parade starts at 10 am and is 1 block away!.
Custom Rockin' Riverfest MEDALS to top 3 in the following age groups. (1-13,14-19, 20-29, 30-39, 40-49, 50-59, 60-69,70+) 5k,10k and Half Marathon. Splits are timed with Instant results.
Please consider donating a few bucks to The St Charles School District Cross Country program. 100% of proceeds stay local and go to help keep kids in shoes, jackets, tarps, drinks, and general program support.
Make a holiday of it! "Saint Charles Riverfest is the City's premier Fourth of July Festival featuring live music, great food and drinks, children's activities, a carnival and more. This year will feature a fireworks display on both evenings"
Packet pick up Thursday, July 3 at Bike Stop Cafe 3-6pm and race morning in Racers Village 6:15-7:15 am.
National Anthem goes at 7:26 am, you go at 7:30!
Get your friends/fam to join you and lets go!!
Pick your distance
Running
5K
Start at the Frontier park pavillion and head north on the Katy trail and into the single track riverscene trails then through the water station at mile 2 and stride it out on the Katy back to Racers village to finish. OFFICIAL START TIME 7:33
10K
Start at the Frontier park pavillion and head north on the Katy trail and into the single track riverscene trails then through the water station at mile 2 and stride it out on the Katy to the second section of riverscene trails then back on the Katy to Racers village to finish. OFFICIAL START TIME 7:30
5K Fun Run/Walk
Start at the Frontier park pavillion just after the 5/10k and head north on the Katy trail and into the single track riverscene trails then through the water station at mile 2 and back to Racers Village. This is timed but not scored, but the Finishers Medal, Rockin' Riverfest bib number and all of the fun is! OFFICIAL START TIME 7:33.
The Rockin' Half Marathon
Start at the Frontier park pavillion and head north on the Katy trail and into the single track riverscene trails then through the water station at mile 2 and stride it out on the Katy to the Turn around point, Back through the Aid Station and into the second section of riverscene trails Through the South Aid Station then back on the Katy to Racers village to the Turn around point (also an aid station) and take another lap! OFFICIAL START TIME 7:30.
Typical race-day weather
Based on 4 years of Open-Meteo archive data for this event's race dates in Saint Charles, plus the 3 days either side.
The sun rises at 5:41 AM and sets at 8:30 PM local time (CDT) in Saint Charles on July 3, 2027 — 14h 49m of daylight.
Course
No course map published yet.
The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.
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Results — The "ROCKIN' RIVERFEST" 5k, 10K, Half Marathon & Fun Run!
Other races near Saint Charles
Different organizers, within 40 miles, in the next three months
MO' Cowbell Marathon/Half-Marathon/10K/5K
5P Athletics Foundation 5K
Chesterfield Turkey Trot
Dashing through Defiance - 1 mile | 5k | 10k
🏃 Plan Your Next Race in Saint Charles
Find upcoming events by distance:
- Saint Charles 5K Races 5 races
- 10K Run Events in Saint Charles 4 races
- Saint Charles Half Marathons 4 races
- Saint Charles Running Calendar 2026 8 races
Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.
- Entries, prices, waves and inclusions — the event's official registration page
- Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
- Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
- Comparisons and counts — Race Discovery calendar, 10 Saint Charles events
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