To see the real distance you must start an activity.
The see the steps distance which is calculated from your stride length you can look at the Steps page, but note that it isn't the real travelled distance. Example. Today I've ran 6.4 km (logged GPS activity) and walked ~300 meters without logging. The number of steps is 8363 and the steps distance is 8.3 km. So you will likely get a longer distance than in reality.
For biking you can't see the distance with logging it.
