JMC Running Co: 4-Hour Relay & Solo-Ultra Challenge
About this race
Come out and take part in the annual summertime tradition, the 10th Annual 4-Hour Relay and Solo Ultra Challenge!
Interested participants can pick from one of two events: The 5 Man Relay or the Ultra Challenge
5 Man Relay - Form a team of 5 runners. Each runner will run a loop consisting of ~2.2 miles and hand off, repeating in order for 4 hours. The team covering the most distance will be declared the winner! This promises to be a fun team event!
Ultra Challenge - Take the ultra challenge and run the loop solo as many times as possible during the 4 hour timeframe! Not for the faint of heart, the goal is to run, jog, walk or crawl to gain more ground than anyone else.
Cash Awards to the Winners!
Those participating in the event should arrive no later than 7:30 AM for instructions and logistics on the day. Setup begins at 7 AM for those interested.
Tents, coolers and other supplies to keep you going through the day are encouraged! Water and food will be provided throughout the morning!
Course overview / map- Will take place throughout Charlestown Park. A loop consists of approximately 2.2 miles and starts and finishes at pavillion #2 (where camp will also be set up). A map of the course will be provided the week of the event for review.
Any questions can be directed to Justin Winters at justinwinters8@gmail.com
Pick your distance
Running
4-Hour Relay
5 people form a team and run as many loops as possible during the 5 hour timeframe
Trail running
4-Hour Solo Ultra Challenge
Run solo and cover as many loops as possible during the 5 hour event
Typical race-day weather
Based on 9 years of Open-Meteo archive data for this event's race dates in Phoenixville, plus the 3 days either side.
The sun rises at 5:48 AM and sets at 8:28 PM local time (EDT) in Phoenixville on July 18, 2026 — 14h 40m 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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🏃 Plan Your Next Race in Phoenixville
Find upcoming events by distance:
- Phoenixville 5K Races 3 races
- 10K Run Events in Phoenixville 2 races
- Phoenixville Running Calendar 2026 7 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, 7 Phoenixville events
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