James Heptonstall and Noel Carroll took on the Brownlee brothers in a triathlon challenge with a twist.

James and Noel would sample the Olympians day job, while Alistair and Jonny would take on a more unconventional triathlon through London.

Alistair Brownlee - ITU Hamburg 2014 (Triathlon.org)

The two brothers took on their route from the starting point of Royal Victoria Dock by boarding the Air Line to cross the river. They then took a bus from the O2 down to Blackheath before a final leg on three wheels as the two jumped in a rickshaw to get to the finish point at the top of Greenwich Park.

Meanwhile, from the same starting point, James and Noel started their side of the challenge; a swim, bike and run through the city.

Their route saw them swim across the Royal Victoria Dock before boarding their bikes to ride alongside the Thames and then under the river via the Woolwich Tunnel.

Their final leg saw them go from Vanbrugh Park and take on a run up to the top of Greenwich Park to meet their challengers at the General Wolfe Statue overlooking London.

Alistair Brownlee said; “It was great to be involved in the race against James and Noel. It is not the way we usually do a triathlon but it was a lot of fun and a good chance to see a bit of London on the way.”

Jonny Brownlee added; “We had the much more comfortable journey than the guys but that didn’t stop us trying to win it. Unfortunately I didn’t feel quite as quick on the rickshaw as I do on a bike usually.”

Find out which route was quickest here: