It's wet, dirty and very competitive.
The keenly contested 2013 Northern Ireland Bog Snorkelling Championships takes place this weekend – and it's not too late to enter if you're brave enough to dive in.
Bog snorkelling is a sporting event where competitors complete two consecutive lengths of a 60-yard long bog drain, filled with filthy water, in the shortest time possible.
This year's event is being held at Peatlands Park near Dungannon on Sunday.
The mucky race is organised annually by the Northern Ireland Environment Agency to raise awareness of the need to protect and conserve boglands as part of International Bog Day.
The Women's Champion title is one of the most eagerly contested.
Reigning world champion is 18-year-old lifeguard Dineka Maguire, from Belleek in Co Fermanagh, who gave a super-fast performance last year of less than 100 seconds. But Queen's University PhD student Georgina Milne (27), from Belfast, is hoping to change all that.
Colin Gates, assistant warden at Peatlands Park, said the intense competition is only part of the day. He said: "For those who don't fancy their bog snorkelling chances there is a free family fun day on offer."
The event starts at 11am.