Meet the Ghost Pacer: a pair of mixed reality glasses for runners that serves as your holographic running partner to keep you motivated. It also lets you race with your friends. The companion app provides you with fun workouts in your area. Ghost Pacer also integrates with Strava.
The Ghost Pacer lets you set the avatar to run at your target pace. You can race against your previous results. The pro version is even more powerful with heart rate integration.