Question: The Three Peaks Yacht Race is based on an idea by the mountaineer of what nationality?

Context articles: 2002 Sydney to Hobart Yacht Race
2013 Sydney to Hobart Yacht Race
2011 Sydney to Hobart Yacht Race
Three Peaks yacht race
Bill Tilman
Newport to Ensenada International Yacht Race
2000 Sydney to Hobart Yacht Race
2001 Sydney to Hobart Yacht Race
1999 Sydney to Hobart Yacht Race
Three Peaks Cyclo-Cross

The 2002 Sydney to Hobart Yacht Race, sponsored by Rolex, was the 58th annual running of the "blue water classic" Sydney to Hobart Yacht Race.
 As in past editions of the race, it was hosted by the Cruising Yacht Club of Australia based in Sydney, New South Wales.
 As with previous Sydney to Hobart Yacht Races, the 2002 edition began on Sydney Harbour, at noon on Boxing Day (26 December 2002), before heading south for 630 nautical miles (1,170 km) through the Tasman Sea, past Bass Strait, into Storm Bay and up the River Derwent, to cross the finish line in Hobart, Tasmania.
The 2013 Sydney to Hobart Yacht Race, sponsored by Rolex, is the 69th annual running of the "blue water classic" Sydney to Hobart Yacht Race.
 As in past editions of the race, it is hosted by the Cruising Yacht Club of Australia based in Sydney, New South Wales.
 As with previous Sydney to Hobart Yacht Races, the 2013 edition began on Sydney Harbour, at 1pm on Boxing Day (26 December 2013), before heading south for 630 nautical miles (1,170 km) through the Tasman Sea, past Bass Strait, into Storm Bay and up the River Derwent, to cross the finish line in Hobart, Tasmania.
The 2011 Sydney to Hobart Yacht Race, sponsored by Rolex, was the 67th annual running of the "blue water classic" Sydney to Hobart Yacht Race.
 As in past editions of the race, it was hosted by the Cruising Yacht Club of Australia based in Sydney, New South Wales.
 As with previous Sydney to Hobart Yacht Races, the 2011 edition began on Sydney Harbour, at 1pm on Boxing Day (26 December 2011), before heading south for 630 nautical miles (1,170 km) through the Tasman Sea, past Bass Strait, into Storm Bay and up the River Derwent, to cross the finish line in Hobart, Tasmania.
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.
Major Harold William "Bill" Tilman, CBE, DSO, MC and Bar, (14 February 1898–1977) was an English mountaineer and explorer, renowned for his Himalayan climbs and sailing voyages.
The Annual Newport to Ensenada Yacht Race is a 125-nautical-mile International Yacht Race.
 First run in 1948, sailors gather each spring in Newport Beach, California, to take part in one of the West Coast's premier regattas.
 The Newport to Ensenada yacht Race (N2E) is a race to the city of Ensenada, Baja California.
The 2000 Sydney to Hobart Yacht Race, sponsored by Telstra, was the 56th annual running of the "blue water classic" Sydney to Hobart Yacht Race.
 As in past editions of the race, it was hosted by the Cruising Yacht Club of Australia based in Sydney, New South Wales.
 As with previous Sydney to Hobart Yacht Races, the 2000 edition began on Sydney Harbour, at noon on Boxing Day (26 December 2000), before heading south for 630 nautical miles (1,170 km) through the Tasman Sea, past Bass Strait, into Storm Bay and up the River Derwent, to cross the finish line in Hobart, Tasmania.
The 2001 Sydney to Hobart Yacht Race, was the 57th annual running of the "blue water classic" Sydney to Hobart Yacht Race.
 As in past editions of the race, it was hosted by the Cruising Yacht Club of Australia based in Sydney, New South Wales.
 As with previous Sydney to Hobart Yacht Races, the 2001 edition began on Sydney Harbour, at noon on Boxing Day (26 December 2001), before heading south for 630 nautical miles (1,170 km) through the Tasman Sea, past Bass Strait, into Storm Bay and up the River Derwent, to cross the finish line in Hobart, Tasmania.
The 1999 Sydney to Hobart Yacht Race, sponsored by Telstra, was the 55th annual running of the "blue water classic" Sydney to Hobart Yacht Race.
 As in past editions of the race, it was hosted by the Cruising Yacht Club of Australia based in Sydney, New South Wales.
 As with previous Sydney to Hobart Yacht Races, the 1999 edition began on Sydney Harbour, at noon on Boxing Day (26 December 1999), before heading south for 630 nautical miles (1,170 km) through the Tasman Sea, past Bass Strait, into Storm Bay and up the River Derwent, to cross the finish line in Hobart, Tasmania.
The Three Peaks Cyclo-Cross is an annual cyclo-cross event over the Yorkshire three peaks of Ingleborough, Whernside and Pen-y-ghent, in Yorkshire, England.
 Organised by Bradford Racing Cycling Club on the last weekend of September, it bills itself as the "hardest cyclo-cross race in the world".
 While other races may have comparable or even greater distances and height gain—Whernside, the tallest of the Peaks, only reaches 736 metres—it is the combination of gradient, terrain, and weather that give the "Three Peaks" its reputation.