The Three Peaks Yacht Race is held each year in June in the United Kingdom since 1977. It is based on an idea of Bill Tilman, who had advocated a Three Peaks Challenge route without using motorised transport. His doctor, Rob Haworth, with colleague Merfyn Jones developed the idea into a race.
Motorised transport isn't allowed in the Three Peaks Yacht Race.
The text states that Bill Tilman advocated this idea, but doesn't state whether it was implemented.
( z1 allow :polarity - :ARG1 ( z2 transport :ARG1-of ( z3 motorize ) ) :subevent-of ( z4 race :name ( z5 name :op "Three" :op "Peaks" :op "Yacht" :op "Race" ) ) )