Around twelve hundred people are to take part in a triathlon in the lake at Castle Howard in North Yorkshire today. The local Brownlee brothers have spurred an increase in registrations with 65 pairs of siblings racing, having been inspired by their performance last Summer.
Details of a new Triathlon event - organised by Yorkshire's Olympic heroes, gold medallist Alistair and bronze medallist Jonny - have been confirmed.
The Brownlee Super Sprint Triathlon will be held in the stunning surroundings of Fountains Abbey and Studley Royal Park in North Yorkshire on September the 21st.
It'll involve a 400m open water swim in the Studley Lake, before 2 laps of the cycle route covering 10km, and a final 2.5km run to a spectacular finish in front of the Abbey ruins. 700 have already entered - including the Brownlee brothers themselves - and there are still 300 places left.
Olympic heroes the Brownlee brothers have somehow managed to find time amid their gruelling daily triathalon training to write a book.
It's called Swim, Bike, Run: Our Triathlon Story, and it charts the life so far of Olympic Champion Alistair and World Champion Jonny - both from Horsforth near Leeds.
Jonny Brownlee from Leeds has won his second successive World Triathlon Series event in Madrid. The 23-year-old defending world champion finished in one hour, 50 minutes and 42 seconds. He is now is in sixth place in the series with four events to go, including the London grand final.
His older brother Alistair was forced to miss the competition due to an ankle injury.