1. Man vs. Horse Marathon

The annual Man vs. Horse Marathon began in 1980 when a local landlord decided to schedule the event after hearing two men arguing about whether or not an individual could beat a horse in a cross country race.

2. Bog Snorkeling

The World Bog Snorkeling Championship takes place in a dense peat bog near Llanwrtyd Wells, in Wales. Competitors are required to wear traditional snorkeling gear but can only move with the use of their flippers.

3. Toe Wrestling

The World Toe Wrestling Competition started at a pub in Derbyshire, UK in 1976; organizers applied in 1997 to get the sport included in the Olympics but it was not accepted.

4. Fistball

Although it is not well-known, fistball is an old sport that's practiced all over the world. Like tennis and volleyball, the purpose is to hit the ball with your fist and place it in the opponent's half where they can't get to it.

5. Octopush

Octopush is also known as underwater hockey. Octopush has actually become popular in countries like the UK, Australia, Canada, New Zealand and South Africa.