Ginny Justinn

Ultramarathon Calendar 2025. Month races 50k 50 mile 100k 100 mile 6 hour 12 hour 24 hour 48 hour 72 hour backyard An ultramarathon is any running race longer than traditional marathon length of 42.195 km or 26.2 miles.

Find ultra marathons near you with the runguides north america ultra running calendar. An ultramarathon is any running race longer than traditional marathon length of 42.195 km or 26.2 miles.