The Keys100 (www.keys100.com) I ran this race in 2019 when we broke some heat records; up to 41C combined with a brutal 90% humidity. As you can see in the graph from my app, the peak was after 9:28 hours of running when the temperature peaked at 41C (106F). This was after 53 miles (85 … Continue reading The KEYS100 Ultramarathon