Fifth Street Rock Monster
About this race
The Technical Tango
Sunday, April 11, 2027
Forever Farm | Mertztown, PA
Welcome to the Fifth Street Rock Monster. We’re throwing a spring awakening at Forever Farm. A slice of private singletrack heaven normally guarded by gates and "No Trespassing" signs. This is the only weekend of the year you’re allowed on these trails without a court date.
It’s technical, it’s rugged, and nature will likely try to trip you. But hey, we’ll have a beer waiting at the end.
The Details (Pay Attention)
The Vibe: High-energy singletrack, questionable jokes, fly tunes, and fresh food.
The Course: Continuous loops. Simple navigation. Same suffering.
The Distances: 5K, 10K, Half Marathon, Full Marathon, Ultra Rock Relay
The "Two-Headed" Relay: Teams of three. Two runners on course at the same time. This isn't a solo sufferfest. It's a squad mission. MONEY IS ON THE LINE!
Learn More About the Two-Headed RelaySchedule & Saturday Scouting
Saturday, April 10: Rock Monster MTB races (9am-3pm). Heckle cyclists. Scout lines. Join the party.
Camping: FREE camping Saturday night at Forever Farm. Survive the pre-race campfire hydration and you're golden.
Sunday, April 11 (Race Day):
Check-in: 6:00 AM
Racing Starts: 7:00 AM
After Party: When the first finisher hits and ends when fuel (or beer) runs out.
Registration & The Fine Print
Pricing: Based on field size. The longer you wait, the more you pay.
Day-of Registration: +$20 "Procrastination Tax." Venmo, Credit, or Cash accepted.
Juniors (16 & Under): 50% discount automatically applied at checkout.
Waiver Requirement: No signature, no Monster.
Amenities (Don't Be Gross)
Porta Potties: Use them. This is private property.
Food: Every runner gets a free meal and a drink. The grill will be hot. Veggies friends, bring your go-to protein. We’ve got grill real estate for you.
Hydration: Fully stocked aid stations on course.
Beer: Local gold for 21+ runners. Spectators $5.
Prizes & Glory
Overall: Top 3 M/F/NB in each solo distance win awards.
Relay Cash: $250 / $150 / $75
Finisher Award: Commemorative FSX Rock Monster Coaster.
Ready to Face the Monster?Pick your distance
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
Typical race-day weather
Based on 2 years of historical conditions on this event's race dates in Mertztown.
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.
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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
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