With so many marathons taking place each year, it can be tricky to know which to choose or when to run. Fall might be the ideal time. The weather is usually a little milder and conditions more favorable for running. However, we can’t promise this is true for every marathon on this list…

It's the fast way to build strength and boost endurance. If you're looking to take your running to the next level, it's time to try intervals.

On athlete Matt Hanson blazes to victory at the Ironman North American Championships in a new world-record time of 7:39:25

A dedicated racing shoe separates the casual runner from someone looking to take things a step further, faster. But despite their promise of pace, racing flats simply aren’t for everyone. Let’s take a look at whether a racing shoe could help make 2018 your fastest year yet.

These quick-fire tips are for any and every kind of runner aiming at taking their personal best times lower than ever before. Some can be put in to action right now, others can help you get faster over time. That said, no time to waste; it's all aboard the speedway from here!

We’re all busy people. We work through the day and generally when it ends, look forward to heading home to cook, relax and have some quiet time. In winter especially, running after a long day of work is probably the last thing on your mind, but what if it turned out it could be something to look forward to each evening?

Ahead of the Zurich Ironman, one of On’s hometown events, we sat down with Swiss champion Ruedi Wild to ask how he feels now competing for a podium place in the local race he watched growing up.

After his incredible fourth win at Ironman France, pictures have emerged of winner Frederik Van Lierde bloodied on the run. We asked him to shed some light on exactly what happened - and how it affected his race and win.

We’re honored to announce our ongoing sponsorship and support for the Athlete Refugee Team (ART) ahead of them competing in London, and present their athlete kit for 2017 and beyond.