Many of the 172 runners who began the 62-mile ultramarathon were lightly clothed with some only in shorts and T-shirts

The weather deteriorated between the second and third checkpoints – a five-mile stretch of trail, 15 miles into the route

Yellow

River

CP5

33.9 miles

CP4

23.6 miles

Supply point

28 miles

CP3

20.2 miles

CP6

38.8 miles

CP2

14.9 miles

CP8

51.3 miles

Finish

CP7

46.9 miles

CP1 and 9

8.1 miles

56.9 miles

Start

5 km

5 miles

CP5

33.9 miles

CP4

23.6 miles

The weather deteriorated between the second and third checkpoints – a five-mile stretch of trail, 15 miles into the route

Supply point

28 miles

CP3

20.2 miles

CP2

14.9 miles

CP6

38.8 miles

Yellow River

CP7

46.9 miles

CP1 and 9

8.1 miles

56.9 miles

Finish

CP8

51.3 miles

Longwan

Start

5 km

5 miles