Monster of Mazinaw

This unique event utilizes some of the backcountry trails at Bon Echo Provincial Park. Runners should expect technical sections and longer distances between aid stations. A large section of the 30k and 60k events take place on back-country trails that are very challenging; even for experienced trail runners. These trails are very rocky, have plenty of roots, and have a number of steep descents and ascents. It will be very slippery if wet. Runners will need to be self-reliant through this section and must be prepared to go 15km without aid. We consider this a “graduate” level trail and it is not suitable for runners without trail experience.

Results

Date Finishers Top Result (F) Top Result (M)
09/20/25 43 4:18:37 4:00:31
09/21/24 39 4:45:15 4:33:52
Date Finishers Top Result (F) Top Result (M)
09/23/23 13 9:09:25 6:23:59
09/24/22 Race Cancelled

Weekly Newsletter

A roundup of the week's content and most recent race results. Sent once a week on Thursday.

Recent Results

Black Mountain 50k
San Diego, CA - 121 finishers
50 KM
Orange Curtain
Cerritos, CA - 48 finishers
100 KM | 50 KM | 24 Hours
Schuetzen Nein! Hour Endurance Run
Davenport, IA - 70 finishers
9 Hours
Ring the Springs
Colorado Springs, CO - 127 finishers
100 KM | 50 KM
Denali 135, 100k & 50k
Paxson, AK - 70 finishers
135 Miles | 100 KM | 50 KM
Many On The Genny
Castile, NY - 99 finishers
45 Miles
White Pine Solstice Runs
Tooele, UT - 13 finishers
55 KM
Golden State 50K
Salinas, CA - 86 finishers
50 KM
Old Gabe
Bozeman, MT - 12 finishers
50 KM
#onemileatatime 12 Hour Challenge
Griffin, GA - 83 finishers
12 Hours
View All Results