I've covered the Three Bridges Race before on Earwigoagin, a 50 mile jaunt around winding narrow rivers, under low hanging bridges, in the English Norfolk Broads. Here is a drone video of this year's event, no sound, just bucolic images of classic sailing classes starting the race under typical English summer weather, alternating glorious sun with grey belly cumulus. From the text blurb accompanying this video:
"The 55th Three Rivers Race was the first time aerial photography was allowed by organisers, Horning Sailing Club. Richard Kemp of Skyhover used an octocopter to photograph the start of the race . The three rivers from which the race gets its name are the three northern rivers of the Broads (Norfolk, UK), the Bure, Ant and Thurne. There are numerous Windmills and pumps such as the white Thurne Mill along the route.
At first the race sounds simple, an out and back course, in which you must round four marks and return to the start. It begins to sound trickier when you discover the course is in the order of fifty miles in length. It requires great planning and skill to navigate in unpredictable tides and variable winds. Many of the classes are for historic boats built in Norfolk and Suffolk for the difficult local conditions: such as the River Cruiser (first built 100 years ago) Yare & Bure One Design, Norfolk Punt. The greatest outsider challenge comes from the extremely fast Thames A Raters."
Navigators & General Three Rivers Race 2015 from Skyhover Aerial Video Norfolk on Vimeo.