Today I want to take a look at some great footage that coach Mat Steinmetz has provided, featuring pro triathlete Mirinda Carfrae on a one hour training run after a 100 mile bike session.
Check-out the video above for some insights into what it takes to run 2hr50 and change off the bike at the Ironman World Championships, as Mirinda did to set the course record at Kona, that still stands.
How does your running compare?
Last Updated on 16 January 2026 by the5krunner
tfk is the founder and author of the5krunner, an independent endurance sports technology publication. With 20 years of hands-on testing of GPS watches and wearables, and competing in triathlons at an international age-group level, tfk provides in-depth expert analysis of fitness technology for serious athletes and endurance sport competitors.
