Photo: Getty Images

Over hill, dale and ice. You can keep your 26-mile, 365-yard strolls.

© Photo: Getty Images

THE HOTTEST: Marathon des Sables

Where: In the Moroccan Sahara desert, route changing annually
How long: About 250km over six days
Terrain: Desert sand 
Temperature: At night 0°C, by day 40°C 
Record: 16h 27m
Water required: Nine litres daily
Risks: Disorientation. In 1994, one lost entrant was found alive – just – nine days later.

© Photo: Getty Images

THE HIGHEST: Tenzing-Hillary Everest Marathon

Where: Up and up from Mt Everest base camp in Nepal
How long: 42.195km 
Terrain: Himalayan 
Temperature: 10°C 
Record: 3h 28m 27s
Highest point: 5,364m
Risks: Yeti sightings brought on by severe lack of oxygen.


© Photo: Getty Images

THE WILDEST: Jungle Marathon

Where: Amazonian Brazil How long: 254km
Terrain: Jungle Temperature: 40°C
Record: 32h 18m
Humidity: 99 per cent
Risks: Leeches, anacondas, piranhas.

© Photo: Getty Images

THE COLDEST: Polar Race 

Where: Canada, from Nunavut to the magnetic North Pole
How long: 650km
Terrain: Snow and ice
Temperature: -50°C 
Record: 10d 9h 45m
Risks: At 50 below, it’s not just the liquids you take on that freeze.

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10 2014 The Red Bulletin

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