Figure 1

Mountaineering schedule. Total of 10 checkpoints (CPs): CP 1, Linkou (250 m); 2, Cingjing Farm (1743 m); 3, Yuanfeng parking lot (2756 m); 4, training camp (3100 m) at noon; 5, East Peak (3421 m) of Hehuan Mountain; 6, training camp (evening); 7, training camp (next morning); 8, Main Peak (3416 m) of Hehuan Mountain; 9, Cingjing Farm and 10, Linkou. Solid line indicates that participants were transported by bus.