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34,045EventsUnited States2026
JUL 2026
20SAT
18
JUL
JMC Running Co: 4-Hour Relay & Solo-Ultra Challenge
Phoenixville, US
SAT
18
JUL
Ulster Project Delaware 5K
Wilmington, US
SAT
18
JUL
Eagle 5K, & 10K at Akron, PA (29)
Akron, US
SAT
18
JUL
Hunger Hero 5k: The 250th Anniversary Special
Belvidere, US
SAT
18
JUL
Splash Dash
Cressona, US
SAT
18
JUL
47TH ANNUAL GREAT WYOMING BUFFALO STAMPEDE 10K/5K RUN & 5K COMPETITIVE WALK
Wyoming, US
SAT
18
JUL
St. Eulalia Annual Jerry Mahon 5K
Moscow, US
SAT
18
JUL
Sun and Sand 5K
North Wildwood, US
SAT
18
JUL
Big Bang Mile and Science Festival
Holmdel, US
SAT
18
JUL
Dash 4 Dignity 5k
Baltimore, US
SAT
18
JUL
2026 Dash 4 Dignity 5K Race
Baltimore, US
SAT
18
JUL
30th Annual Summerfest 5K Run/Walk & Kids Fun Run
East Berlin, US
SAT
18
JUL
George Washington Day 5K & Fun Run
Warwick, US
SAT
18
JUL
Flight 800 Memorial Race
Montoursville, US
SUN
19
JUL
Quadzilla 15k Trail Run
Schnecksville, US
SUN
19
JUL
Quadzilla 15k Trail Race
Schnecksville, US
SUN
19
JUL
Avalon Beach Classic 5K Run/2Mile Walk/Kids 2K and 1K Fun Run
Avalon, US
SUN
19
JUL
2026 Delaware Youth Center 5k/10K River Race - Sunday 19th July 2026
Callicoon, US
MON
20
JUL
Lake Takanassee Summer Series
Long Branch, US
THU
23
JUL
Van Cortlandt Track Club:Cross Country Summer Series
Bronx, US
JMC Running Co: 4-Hour Relay & Solo-Ultra Challenge
Saturday, July 18, 2026 · Phoenixville, United States
Start location
About this race
The 10th Annual 4-Hour Relay and Solo Ultra Challenge, a summertime tradition in Charlestown Park, offers two options. Form a 5-man relay team and each runner completes a ~2.2-mile loop, repeating for four hours to cover the most distance. Or, run the loop solo as many times as possible within the four-hour timeframe. The goal is to gain more ground than anyone else. Cash Awards go to the winners. Tents, coolers, and supplies are encouraged. Water and food are provided.