There’s something special about being so excited to go running that you count the minutes until you can leave work, lace up, and hit the pavement. But no matter how much you’re in love with running, it takes a little effort to keep the relationship fresh. “If you want to make progress and still keep it fun, variety is going to be crucial,” says Jason Fitzgerald, an elite marathoner, running coach, and founder of strengthrunning.com Before a favorite neighborhood route starts to feel ho-hum, mix in one of these 18 runs to keep things fun and challenging. Each one can be modified for runners of any fitness and experience levels. Many of the workouts require a set distance, but you don’t need access to a track. Websites and apps like MapMyRun and USA Track & Field make it easy to map distance so you can do these workouts anywhere. To read more click here!