Mud Hero Halifax
Mud Hero is one of Canada's most popular obstacle course race series. Participants get to work their way through a 6km (ish) course with 18 + obstacles. Expect a lot of mud, and a variety of challenges, but no electric shocks or burpees ;)
If you're looking for a bit more of a challenge the Halifax event offers an Ultra 10K option which features a longer course, and a number of additional obstacles.
Kids can also participate in the Mud Hero Kids course that features downsized versions of the adult course.