2026 - Fifth Street Rock Monster
2026 distances
Trail running
Trail Marathon
6 laps of our course to make a full marathon. Mapping software indicates the length is 27 miles, but we have found the actual running distance is closer to the true 26.2. The course is mainly a singletrack trail through the woods near farmland. The course is mainly a singletrack trail through the woods near farmland. It features rolling, rugged terrain with rocks, roots, and smooth singletrack sections. The race is fully supported with stocked aid stations, including fruit and drinks. Athletes are encouraged to bring their own specialty nutrition needs.
Trail Half Marathon
3 laps of our course to make a half marathon. The course is mainly a singletrack trail through the woods near farmland. The course is mainly a singletrack trail through the woods near farmland. It features rolling, rugged terrain with rocks, roots, and smooth singletrack sections. Fully supported and stocked.
10k
1.5 laps of our course makes 10k. The course is mainly a singletrack trail through the woods near farmland. The course is mainly a singletrack trail through the woods near farmland. It features rolling, rugged terrain with rocks, roots, and smooth singletrack sections. Fully supported and stocked.
5k
2 laps of the western section of trails makes our 5k. The course is mainly a singletrack trail through the woods near farmland. The course is mainly a singletrack trail through the woods near farmland. It features rolling, rugged terrain with rocks, roots, and smooth singletrack sections. Fully supported and stocked.
Trail Ultra-Marathon Relay - Team Captains/ Relay members
The Ultra Relay consists of 7 laps of our course, totaling approximately 100 km (62 miles). While each participant can run a maximum of 50 km, the distance is calculated based on pairs running together. The course primarily features a singletrack trail winding through the woods near farmland, characterized by rolling and rugged terrain with rocks, roots, and smoother sections. It is fully supported and stocked throughout. Registration Details: - Team registration fee: $175 for the first five teams registered. - The team captain will handle the initial registration. - Additional team members can register for free by selecting an existing team. This event is a multi-lap ultra-marathon relay in which teams of three compete on a 4.5-mile loop within a single Open category. Teams are ranked based on the order they complete the 7 laps, which totals approximately 100 km (62 miles). The first team to finish the total distance will be declared the winner. At all times, two runners must be on the course, rotating in the designated exchange area. Each runner will receive credit for a full lap of 4.5 miles. Therefore, when two runners complete one lap together, it counts as 9 miles (14.6 km). All three team members must complete at least 2 laps, which allows one runner to skip a single rotation. The team captain registers first and pays the full team entry fee: - $175 for the first 5 teams - $190 for teams 6–10 - $224 for teams 11 and above Additional teammates can join their respective teams later at no additional cost by selecting the existing team. Prizes will be awarded to the top three overall teams: $250 for first place, $150 for second, and $75 for third. Divisions: Open Relay
Race date Weather
Conditions on April 12, 2026 — historical Open-Meteo data.
Course
Route map and elevation profile
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.
Reviews
Done this event?
If you've participated in this event, share your experience with other runners
Other races near Mertztown
Different organizers, within 40 miles, in the next three months
32nd Annual Oley Valley Country Classic 10 Mile & 6K Run - RRCA Regional Championship
Bear's Den Fitness Hybrid Race
Boyertown 1-Mile Challenge
Musser Madness endurance race
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, 1 Mertztown event
Spotted something wrong? Tell us and we'll fix it.