The "Rockin' Riverfest" 5k, 10K, Half Marathon & Fun Run!
Updated
Saturday, July 3, 2027, first start 7:30 AM, in St Charles (Frontier Park). Distances: 5K, 10K, Half marathon. Entry from $25 to $69; the 5K goes from $39 to $45 after March 29.
Course and race notes
Welcome to the the Rockin' Riverfest 5k,10k Half Marathon and Fun Run!
We sold out in 2026' so get registered early! The Rockin' Riverfest is a fun, flat, fast, family friendly event taking place on Saturday Morning July 3rd including Finishers Medals, T-Shirts, Swag and the works! Starting at 7:30am.
In the organizer's words, from the race's own listing.
Race details
Date
Saturday, July 3
2027 · in 238 days
Start time
7:30 AM
Earliest wave
Course
Trail
Dirt or single-track on at least part of the course
Distances
5K10KHalf marathon
Price
$25 to $69
Plus the platform's processing fee
5K goes up after Mon Mar 29 (in 142 days)
Registration
Open
Online signup closes Sat Jul 3 (in 238 days)
Opened Jul 4, 2026
Race day in St Charles
Weather
87° / 68°F
Typical high and low for July 3, with a 29% chance of rain.
NOAA 1991–2020 climate normals, St Charles Elm Pt, MO (4.1 mi away). Averages, not a forecast; a forecast appears here a week out.
Daylight
5:40 AM – 8:30 PM
Sunrise and sunset on Saturday.
Calculated for the race location.
Plan your trip
For the night before, Fri Jul 2
Where to stay
See all places to stay near St Charles, MO ↗
Prices checked November 4, 2026 and can change. Confirm on the booking site before you book. We may earn a commission at no cost to you.
Trip cost
Add what you'll actually pay. It stays in this browser.
Total $0
Race entry starts at the lowest listed price, before the platform's fee.