From cycling to swimming to (zombie) running, use these apps to see how you match up to your peers.
The Basics: Keeps track of distance, time, and other metrics for activities like runs, rides, swims, even windsurfing. There are similar apps—Runtastic, Runkeeper, and MapMyFitness, to name three—but Endomondo gives you the most features for free.
Quick Start: Offers detailed, customizable audio feedback on pace, heart rate, and other stats during a run or ride, and you can have it updated as often as you like. Allows you to compete against others on user-submitted routes or race yourself.
Best For: The most useful features are the real-time cues that help you beat your best. Pep Talk lets friends and family send encouraging messages during a run. When you're slogging through your first marathon, it’s the perfect motivation.
Price: Free. The Pro version ($5 per month) offers interval-training programs and deeper customization to help you top your personal best on a given route. Android, iOS, and others; endomondo.com
My AsicsRead More
The Basics: My Asics is all about race prep. A series of algorithms offer customized plans that evolve as you progress (or hit a wall).
Quick Start: Plug in the race’s distance and do a baseline run; the app will estimate your ready date and work backward to create a custom plan. As you train, the app determines your progress and adjusts workouts accordingly.
Best For: This app is pretty bare-bones—there’s a compass instead of a map—but the special sauce is in the algorithms. Asics claims that 78 percent of runners who follow its plans achieve their goal.
Price: Free. But we recommend using it in tandem with an app like Endomondo for route tracking in real time. Android and iOS; myasics.us
Zombies, Run!Read More
The Basics: A training app disguised as an audio-based game that lets you, yes, outrun zombies on more than 100 missions. The conceit is a little hokey, but focus on the game and you’ll pay less attention to your burning lungs.
Best For: Choose a half-hour or one-hour run, and the game prompts you to run faster to grab supplies or slower to rescue people. Every once in a while a pack of zombies will give chase: go hard to ditch them. The app saves your stats.
Quick Start: Basically game-ified interval training, and we recommend using it that way—with headphones, lest others hear cues like “They’re right on your tail, don’t look back!” Enjoy your own soundtrack between attacks.
Price: Four bucks—and worth every penny. Also available is Zombie, Run! 5K Training ($2), an eight-week program for beginners. Android and iOS; zombiesrungame.com