Schedule and packet pickup
Packet Pick Up
July 2nd, from 4-6pm at the Bike Stop Cafe or Race morning in Racers Viallage (Frontier Pavillion) from 6-7:15 am.
The "ROCKIN' RIVERFEST" 5k, 10K, HALF MARATHON & Fun Run! 2027
- Date
- Saturday, July 3, 2027
- Start time
- 7:30 AM start (Chicago)
- Location
- St Charles, Missouri
- Entry fee
- From $25 · goes up to $55 on Mar 29, 2027
- Included with entry
- Includes a shirt
- Fundraising
- Takes optional donations when you register
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Registration is open.
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Official race websiteAdd to calendar: Apple or Outlook · Google
Events and entry fees
| Event | Distance | When | Entry fee | Cap |
|---|---|---|---|---|
| 10K | 10K | Jul 3, 20277:30 AM | $49$55 after Mar 29, 2027 | – |
| 5K | 5K | Jul 3, 20277:30 AM | $39$45 after Mar 29, 2027 | – |
| The Rockin' Half Marathon | Half Marathon | Jul 3, 20277:30 AM | $69$79 after Mar 29, 2027 | – |
| 5K Fun Run/Walk | 5K | Jul 3, 20277:33 AM | $25$40 after Jul 3, 2027 | – |
Entry fees exclude processing fees. Prices and dates come from the race's registration page and refresh nightly.
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The 10K fee goes up to $55 on Mar 29, 2027.
Race day planning
Entry fee schedule
- 10K: $49 until Mar 29, then $55 until Jun 19, then $59 until Jul 2, then $69 until Jul 3.
- 5K: $39 until Mar 29, then $45 until Jun 19, then $49 until Jul 2, then $59 until Jul 3.
- The Rockin' Half Marathon: $69 until Mar 29, then $79 until Jun 19, then $99 until Jul 2, then $120 until Jul 3.
- 5K Fun Run/Walk: $25 until Jul 2, then $40 until Jul 3.
Online registration closes Jul 3, 2027, unless the race fills first.
How the price compares
At $69, entry is about the same as a typical half marathon in Missouri ($65).
What a typical finish looks like
A typical finisher at a half marathon in Missouri runs 2:08:16, about 9:47 a mile, based on 39 races with published results. Women typically finish in 2:18:16 and men in 1:58:39.
Light and altitude
Sunrise on race morning is at about 5:40 AM, and the 10K starts at 7:30 AM. The start sits about 440 feet above sea level.
Fees exclude processing fees. Comparisons use current entry fees and published results from races nearby.
Start location and course
Frontier Park, St Charles, MO 63301
- Directions to the start
- Course map on Plotaroute
- Download Route to your Device (Strava)
- Download Route to your Device 5K Route (Strava)
The pin marks the address the race lists, which is usually the start. Course maps are the organizers' own.
2026 results
All results (3 years)5K
294
finishers
39:45
median (12:48 /mi)
0:04
winning time
62% / 38%
women / men
10K
168
finishers
1:08:33
median (11:02 /mi)
31:50
winning time
58% / 42%
women / men
The Rockin' Half Marathon
162
finishers
2:16:16
median (10:24 /mi)
42:53
winning time
57% / 43%
women / men
Aggregated from official results for The "ROCKIN' RIVERFEST" 5k, 10K, HALF MARATHON & Fun Run!. Individual finisher names are not stored here.
How fast do you need to be at The "ROCKIN' RIVERFEST" 5k, 10K, HALF MARATHON & Fun Run!?
At the 2026 5K, the fastest tenth finished in 26:54 or better, the top quarter in 31:33, and half the field in 39:45; the last tenth came in after 54:25.
At the 2026 10K, the fastest tenth finished in 53:23 or better, the top quarter in 1:00:17, and half the field in 1:08:33; the last tenth came in after 1:35:44.
At the 2026 The Rockin' Half Marathon, the fastest tenth finished in 1:37:22 or better, the top quarter in 1:55:27, and half the field in 2:16:16; the last tenth came in after 2:51:45.
| Age | Women | Men |
|---|---|---|
| Under 20 | 25:21 | 23:25 |
| 20-29 | 29:48 | 19:18 |
| 30-39 | 26:03 | 26:10 |
| 40-49 | 29:45 | 26:15 |
| 50-59 | 34:09 | 29:13 |
| 60-69 | 35:20 | 33:44 |
| 70+ | 51:32 | n/a |
Groups with fewer than five finishers are left out. Awards vary by race; check the race's rules.
What would my time get me?
Where a finish time would have placed in 2026.
Finishers by year
Up 292 percent since 2024.
191
2024
374
2025
749
2026
All events combined, from official results.
The "ROCKIN' RIVERFEST" 5k, 10K, HALF MARATHON & Fun Run! 5K year by year
From 2024 to 2026, the field went from 148 to 294 finishers, and the median time rose from 32:07 to 39:45.
| Year | Finishers | Median | Fastest tenth | Winner |
|---|---|---|---|---|
| 2026 | 294 (+107%) | 39:45 | under 26:54 | 0:04 |
| 2025 | 142 (-4%) | 30:52 | under 19:57 | 16:03 |
| 2024 | 148 | 32:07 | under 24:17 | 16:55 |
From each year's official results for the 5K; virtual options are left out.
How fast is it?
Slower than most Missouri 10Ks
The fastest quarter of the 2026 10K field finished under 1:00:17, against 56:28 in a typical Missouri 10K, so times here run 7 percent slower.
- Half Marathon: Slower than most Missouri half marathons. The fastest quarter of the 2025 half marathon field finished under 2:03:05, against 1:57:25 in a typical Missouri half marathon, so times here run 5 percent slower.
- 5K: Slower than most Missouri 5Ks. The fastest quarter of the 2026 5K field finished under 35:22, against 29:53 in a typical Missouri 5K, so times here run 18 percent slower.
Compares the fastest quarter of each field, so walkers and first-timers do not skew it. It reflects the course and the field together: a flat course, cool weather, or a competitive crowd all make times faster.
Typical race-day weather
Around July 3 the day usually runs from 71°F at dawn to 87°F in the afternoon, with measurable rain on about 41% of days. Cold snaps dip to 65°F and hot years reach 94°F.
Based on 75 days within a week of the date over the last 5 years, from historical weather for the start area. Not a forecast.
From the race's page
What the organizers of The "ROCKIN' RIVERFEST" 5k, 10K, HALF MARATHON & Fun Run! cover on their registration page, in brief.
Shirt and medal
Soft Spun T- shirt
Guaranteed for all distance participants until June 15th! We over order, so if you register after the 15th, its first come first serve until we run out. New design in the works!
Shirt and medal
Finisher Medals for All!
Other awards will also be awarded at the Podium ceremony for the top 3 in age groups and overall winners in each scored category.
Race details
- Where
- Frontier Park, St Charles, MO 63301Map
- Course
- Road
- Start elevation
- About 440 feet
- Included with entry
- T-Shirt
- Donations
- Accepted when you register
- Distances
- 5K, 10K, Half Marathon
- Editions
- 2027 (Jul 3, 2027), 2026 (Jul 4, 2026), 2025 (Jul 5, 2025), 2024 (Jul 6, 2024)
Organize this race? Add details or a correction
Plan your race
Quick answers
- When is The "ROCKIN' RIVERFEST" 5k, 10K, HALF MARATHON & Fun Run!?
- Saturday, July 3, 2027, starting at 7:30 AM.
- How much does it cost?
- Entry starts at $25 before processing fees, and rises to $55 on Mar 29, 2027.
- When does registration close?
- Online registration closes Jul 3, 2027, unless the race fills first.
- Is the entry fee high for Missouri?
- At $69, entry is about the same as a typical half marathon in Missouri ($65).
- Do runners get a shirt or medal?
- Entry includes a shirt, according to the race's registration page. Check it for sizes and whether kids' races get the same.
- Can I donate to a cause when I register?
- Yes. The registration form offers an optional donation, usually for the charity or nonprofit the race supports. The race's own page names the cause.
- What distances can I run?
- 5K, 10K, Half Marathon.
- How big is it, and how fast?
- In 2026, 294 runners finished the 5K; the median finish was 39:45 and the winner ran 0:04.
- Is it a fast course?
- The fastest quarter of the 2026 10K field finished under 1:00:17, against 56:28 in a typical Missouri 10K, so times here run 7 percent slower.
- Where does it start?
- Frontier Park, St Charles, MO 63301.
- Is there a course map?
- Yes, the organizers publish the route on Plotaroute; the link is under Start location and course.
From the organizers
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. 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)