The Ontario Ultra Series (O.U.S.) GRAND SLAM challenges seasoned ultra runners to complete all three of the longest races in the Series within the calendar year. Few are expected to rise to the challenge and even fewer are expected to realize the goal. By its very nature, the GRAND SLAM will push both physical and mental boundaries, recognizing and rewarding those that complete it. New in 2014 is the Petit SLAM.

GRAND SLAM Past Results

2013 GRAND SLAM
Sulphur Springs 100mdirty girls
24/48 hrs
Haliburton
100m
Ottawa 
24hrs
Gino DiCarlo 18:16 248 km 21:15 175.3 km
Karin McMillan 20:51 176 km 26:54 147.3 km
Aimee Runge 28:26 160 km - -
Gerry Shea - - - -






2012 GRAND SLAM
Sulphur Springs 100m Niagara 100k dirty girls
24/48 hrs
Haliburton
100m
Ottawa 
24hrs
Steven Parke  22:24  11:50 120.75 km 23:41
Colin Arnott  20:46  11:15 120.75 km 26:17
Garth Boucher  25:38  12:10 120.75 km 29:49
Pablo Espinosa  19:18  9:02 - 23:41 195.2km
Paul Chenery  19:59  10:08 169.05 km - 161.2km
Chris Miller  23:46  11:46 - 26:44 142km
--------------
Chris McPeake

26:45

13:22

-

dnf
Ryan Barrett  -  11:13 201.15 km dnf
Jack Kilislian  dnf  10:53 96.6 km -
Rich Darke  22:09  - - -
Charlie Upshall  29:22  dnf - -
Aimee Runge  dnf  dnf 161 km -