Williams Bay
Trail Running Calendar near Williams Bay 2026-2027
Explore the top trail runs near Williams Bay for 2026-2027! We've gathered 25 exciting trail runs in the area. Check out our detailed list below to find your next local trail run.
September 2026
Echo 136 is a 136-mile ultramarathon on the Ice Age State Trail near Whitewater, WI on Sep 25, 2026, featuring ten aid stations, pacer and crew rules, and a cupless policy.
A 10th annual farm-based 5k trail run and family day in Fort Atkinson, WI supporting A-T research with in-person and virtual participation options.
Timed trail races at Richard Bong State Recreation Area offering 24 hour, multiple 12 hour formats, 6 hour and 3 hour options on September 26, 2026.
October 2026
Trail running and a guided perimeter walk at Rock River Heritage County Park with a timed 5K using chip timing and a heritage celebration with food trucks and live music.
Nature-based out-and-back event in Roscoe, IL offering a 5K run or 2 mile walk on mixed gravel and crushed limestone, starting at Roscoe Middle School and passing a water station twice.
Trail races in Crystal Lake on October 17, 2026 offering 10 mile and 5 mile courses through Veteran Acres and Sternes Woods.
A fall event at Richardson Adventure Farm in Spring Grove, IL with a 10K, a 5K through a corn maze, and a 1 mile family adventure, plus finisher medals for all.
October running event at Optimist Community Park in Janesville offering 1 mile and 5K courses with proceeds to Momentum Track and Cross Country Club.
November 2026
A multi-distance trail event in Southern Kettle Moraine State Forest offering ultra distances, a 50K and a 15K Fun Run, with aid stations, pacing rules, finisher awards, and proceeds funding forest projects.
A community running event in Fort Atkinson offering a 12k trail-road course, a 5k neighborhood run, and a 1 mile walk/run with proceeds supporting local and international projects.
A 5K trail run and 2 mile walk at Bristol Woods County Park supporting Pringle Nature Center environmental education, with youth pricing and event shirts.
On 11/14/2026 the Abominable Trail Race at Lake Geneva Ziplines & Adventures offers 5K, 10K, 15K and 30K courses plus 2, 3 or 4 person 30K relays on forest trails, with water stations, race shirt, finisher medal and free action photos.
December 2026
A canicross-focused trail event in Lake Geneva, WI offering a 4-mile loop or two laps for 8 miles, with on-course aid and dog-only podium awards.
January 2027
Winter trail race in Crystal Lake with a hilly single-track 10K loop and a 50K made of five laps, staffed aid stations, finisher medals, and age-group awards.
A winter obstacle race at Lake Geneva Ziplines & Adventures on January 30, 2027 offering distances from a kids loop to a 20K Yeti Challenge; fun heats allow optional obstacles while a competitive division awards cash prizes. All in-person finishers r..
April 2027
Trail races in Crystal Lake, Illinois offering 50k, 15 mile and 5 mile distances on a 5.2 mile loop through single track, prairie and pine forest.
May 2027
Nighttime obstacle race in Pingree Grove, IL with multiple 5K heats and a 30K unlimited laps option, illuminated obstacles, live entertainment, and onsite parking.