50km Series

Races 50-56km

The Fat Ass Trail Run

Welcome to the 13th Anniversary of the Fat Ass Trail Run! The Fat Ass as we lovingly call it started 13 years ago with 23 participants who didn't quite know what they had gotten themselves into and who fell in love with running the trails of the Batawa area. In 2013 the race had grown to over 700 participants. Everyone is welcome; fast, slow, young, old, runners and walkers.  While every race has competitive runners throughout who either race against each other, themselves or the clock; the Fat Ass is meant to be a fun race.

Conquer the Canuck

This is a true runners’ race, where the greater portion of race fees are spent on the participants. 

Horror Trail Race

On a 2.5km loop: Well maintained and marked trail through the forrest on Camp Heidelberg property of the Optimist Club of Kitchener Waterloo.

Haliburton Forest Trail Run

2017 will mark the 25nd anniversary of the event which saw its inaugural race take place in 1993. The race has grown steadily since its inception and once again we will offer your choice of 12K, 26K, 50K, 50 mile, the 4 person relay for the 100 mile, each runner running 25 miles, and of course, our signature event, the Haliburton Forest 100 Miler.

Sri Chinmoy Ultras Ottawa

Join us for the 36th Annual 24 Hour Race—the longest running 24 Hour Race in the world! It's also the 8th annual 12 hour race and 9th annual 6 hour race.

The Limberlost Challenge

The Limberlost Challenge 2016 promises to be better than ever. Experience the very best of trail courses.  The Limberlost Forest and Wildlife Reserve is the trail runner’s dream with its challenging terrain that will take you alongside pristine lakes, through a wetland with its tier of beaver dams, up and over some steep inclines and either tiptoeing or splashing through the occasional creek or mud hole.

Niagara Ultra Races

The 23rd running of the Niagara Ultra Races.  50 km, Marathon, Half Marathon or 10k foot race (on traffic-free asphalt footpath) following the Niagara River Parkway from Niagara-on-the-Lake past Fort George and on to Niagara Falls and back.

Sulphur Springs Trail Races

All race events will take place on a 20K loop consisting of approximately 97% trails and 3% roads within the conservation area. The 10K event will use only the western portion of the loop.

The Seaton Soaker

Seaton Trail race is back again this year. We are very excited about staging this race, and it being the second race in the Ontario Ultra Series.

Pick Your Poison Trail Run

Pick Your Poison Trail Run is a challenging 12.5 K loop through the beautiful hills of Horseshoe Valley.  Distances include 12.5K, 25 K and 50 K.  The course consists of approximately 98% off-road terrain made up of a combination of single track and ski trails.