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Boost endurance and mental toughness with this bread-and-butter half marathon and marathon session.

I thought I needed more discipline to start again. Turns out, I just needed the right support.

We asked experts just how much time an everyday runner can save if they ran the tangents like a pro. Here's what they had to say, plus advice on how to do it on a crowded course.

Cold weather and treadmills skew your running data. Here’s the science-backed way to adjust your training intensity when temperatures drop.

Lighter, more stable, and $30 cheaper than the original, On’s updated racer deserves a spot on your speed day shortlist.

I spent years worrying that one greasy fast-food meal could undo everything I'd worked for. Turns out, I had a lot more to rethink than what was on my plate.

How do New York City Marathon finishers stack up against marathoners nationwide? And which country sent the “fastest” runners? We had questions, and a giant spreadsheet of results had the answers.

After a 24-year-old runner died near the finish of the New York City Marathon, reports pointed to rhabdomyolysis. A physician explains the condition and why we shouldn’t rush to name the cause of death.

As your pace gets faster, your reps get shorter. The catch? You're already fatigued, and that will pay off on race day.

Don’t have time for a sweaty, intense run? Running very slowly for 10 minutes can boost brain power and mood.