The note that in any large group of runners, high-mileage and high-speed athletes may be too few in number to be statistically significant.

WSJ: Endurance Sports: Studies on Older Endurance Athletes Suggest the Fittest Reap Few Health Benefits

Organisers installed four run-through showers along the route and added an extra 2, 600 bottles of water to the normal stock of 25, 000 bottles at each station to help runners deal with the high temperatures.

BBC: Runner dies after London Marathon

These expected high-mileage runners run the gamut from affordable small cars like the Toyota Yaris and the Scion xB and xD, to family minded SUVs including the Acura RDX, Lexus RX 350 and the Toyota RAV4 and 4Runner to utilitarian pickups like the Chevrolet Avalanche and Honda Ridgeline.

FORBES: Cars That Can Last For 250,000 Miles (Or More)