Llanwrtyd Wells, Wales: A bizarre aquatic race whereby someone in full wetsuit and snorkel pedals an expensive mountain bike into a filthy bog just outside the small Welsh town of Llanwrtyd Wells.

Entrants are timed as they cycle two lengths of the Waen Rhydd bog, which is 6-feet deep and 45-feet long, on a bicycle with a frame filled with lead. Toppling off your bike isn't penalized, and neither is vomiting from the fetid stench.

Source from Cracked.com.