Train to increase your speed in four weeks with a mix of interval workouts, easy runs, and long runs—all of which you can do ...

All products featured on Self are independently selected by Self editors. However, when you buy something through our retail links, Condé Nast may earn an affiliate commission. With shorter days ...

Serbian-Slovak ultrarunner Michal Šuľa began his new year by setting a new world record for the longest distance run ... day treadmill world record of 846.16 kilometers (525.77 miles) set ...