99 Virtual Race is a self-motivated competition that is organized online where you complete a specific distance by running or walking on a date and time of your choosing, anywhere in the world. 99 Virtual Race can be done on a treadmill at home or at the gym, at the beach, with friends, alone, in the evening, or at the break of dawn, it’s your choice. Whether you are looking to jump start your fitness routine or you’re a competitive runner, a virtual race is a great way to get a 5K, 10K, Half Marathon or full Marathon under your belt.

Make sure that third-party apps are allowed on your device: go to Menu->Settings->Security-> and check "Unknown Sources"

Tap the APK file. Allow the app any required permissions it asks for. Then, at the bottom of the installer window, click INSTALL.

You'll see a confirmation the app is installed. Now you'll see the app available in your list of installed apps.