About This Race
The 50-mile distance represents the Arctic Frog's ultimate endurance test, requiring multiple loops and sustained effort over Wisconsin's winter terrain. With 417 feet of elevation gain distributed across the full distance, runners face a manageable gradient that allows focus on pacing and winter conditions rather than technical climbing. This distance demands respect for both the mileage and December weather, making it suitable for experienced ultra runners ready for a cold-weather challenge.
The Arctic Frog Run utilizes a loop-based course that's approximately 70% asphalt and 30% crushed limestone trail. All distances share the same basic loop structure, with the 15K covering 2 loops of 4.65 miles each, while the longer distances use 6 or 10 loops of a 5.17-mile circuit. The course offers scenic panoramic views of Mayville and features rolling terrain with moderate elevation gains.
The mixed surface provides variety underfoot, transitioning between paved sections and crushed limestone trail segments. The loop format allows runners and crews to plan strategically, with multiple opportunities for support and pacing adjustments. An interactive course map is available through the race website, showing the yellow-marked route direction.
Elevation Profile
Elevation profile estimated from terrain data. Actual course may differ.
The course gains 417 ft over 50 miles, with the steepest section between mile 33–mile 33.
Location
Practical Info
December conditions in Wisconsin typically range from cold to potentially snowy, with temperatures likely below freezing and possible winter precipitation.
MKE - Milwaukee Mitchell International Airport
Mayville is a small Wisconsin city with limited lodging options. Milwaukee, about 45 miles southeast, offers more accommodation choices.
Best For
Notable Features
The Arctic Frog Run's defining characteristic is its December timing, which often transforms the southeastern Wisconsin landscape into what organizers call a 'winter wonderland.' The loop-based format creates a supportive environment for runners attempting their first ultra, while the mixed terrain of asphalt and crushed limestone provides enough variety to keep longer distances engaging. The race's eleven-year history demonstrates its reliability as a winter running option.