Two boats and 14 members from Torridge Pilot Gig Club took part in the Great River Race in London.
The colourful event, which has been running since 1988, attracts more than 300 crews from around the world, with about 2,400 rowers racing for 35 trophies.
They cover a 21-mile route from London Docklands to Ham in Surrey. The only rules are that the boat has a cox, at least four oars, no moving seats, at least one passenger and carries a flag – Torridge waved the Devon flag.
Thirty-two Cornish pilot gigs took part on Saturday with Teignmouth taking the trophy in the category after finishing in 2hrs 20mins.
The Torridge crews, rowing in tutus and moustaches, finished 17th and 26th, both completing the course in less than three hours.
Derek Salkeld, from Torridge, said: "This was an amazing event to have taken part in with spectacular scenes through central London.
"Both crews rowed extremely well and we managed to take in some of the sights, especially rowing under Tower Bridge and past the Houses of Parliament waving the Devon flag.
"This is a must-do event for any rower and marks a great end to a great season for Torridge."