“Big l ungs and strong legs”, “80% is in the head”, “be bothered”. These were a few of the tips for what makes a good high altitude mountaineer from Jon Gupta, Montane Athlete ( https://www.montane.com/jon-gupta-i17 ), one of the UK’s leading mountaineers and also the owner of a successful guiding business ( https://mountain-expeditions.co.uk/ ). Jo n took advantage of lockdown and ran two online talks on high altitude mountaineering – an introductory one for 5-6,000m peaks and an advanced one for 7-8,000m peaks. I joined the introductory talk. This was partly because I like to dream of being a mountaineer one day, partly just for fun and partly because I was interested in the approach Jon was going to discuss and the points I could take into my own running, teaching and leading. The three sound bites above were just the start of the crossover in approach and skills between ultrarunners and high altitude mountaineers. When you think about...