Preparing for a race means training hard or learning how to latch onto the underbelly of a faster runner like a lamprey. Get to the finish line with this Groupon.

Choose Between Two Options

• C$40 for one entry to the Doomsday Dash (C$80 value)
• C$80 for two entries to the Doomsday Dash (C$160 value)

Doomsday Dash

At 10:30 a.m. on May 17 in Trudeau's Park, the world ends. Where cities and forests now stand will lie nothing but wastelands of mud, barbed wire, and debris. The survivors' mission is simple: find a new world. The road to this happier place, though, is strewn with obstacles—20 or so, in fact. This is the Doomsday Dash.

Fortunately for humanity, the story behind this 5- to 7-kilometer race isn't true, but the obstacles present very real challenges. Teams of racers climb walls, jump over fires, and crawl through tunnels. They also face a handful of brand new obstacles, which were just added to the course by its devious designers, including webs of chain and the 40-foot-tall wall known as Apocalyptica. To scale this behemoth, athletes first climb a rope to defeat the slick, sheer surface of the wall. At the top, they're presented with a single option: a waterslide that begins with a vertical drop, before curving away to spit its riders out in front of the finish line.

After the grueling race, the Quarantine Zone provides relief, companionship, and entertainment for runners. Vendors sell food, beverages, T-shirts, and more, while musicians play victorious tunes. Those not yet exhausted by the course can find more physical challenges, including a rock-climbing wall, muddy tug-of-war, and a lake in which to take a swim, where you can determine whether your body evolved gills for survival during the course.