Every amateur rider too wishes they could climb better, but what is it about mountains that enthrals them? Are they addicted to the pain? To the achievement? Or to the allure of the peaks? Some spend their weekends 'Everest-ing', some a summer holiday cycling up mountains from start to finish. But how does a rider push themselves beyond their limits to get up a 10% gradient on pedal power alone? What is happening when they do?

The Dark Glow of the Mountains is an exploration of the central place of mountains in the folklore of road cycling, of the mystique that surrounds the grimpeurs, or climbers, and why amateurs feel compelled to follow them. Interweaving adventure and travel writing with the rich narrative of the Grand Tours, Max Leonard speaks to the riders who conquered the summits and encounters stories of courage and sacrifice, war, love, obsession and elephants.