Welcome back to The Zero to 100 Podcast! We are kicking off season 2 with a good friend of mine, Callum Low. Callum is a former triathlete, now a marathon runner and on this episode we sit down and discuss training for a triathlon compared to a marathon, speed training and what makes up the ability to run faster, and we also discuss the age-old running question - “Why do my knees hurt when I run???” Don’t forget to subscribe and share. Enjoy!