I have a “Workouts” calendar in Google Calendar, which I print out each month and put somewhere visible (i.e. the fridge!) to help remind me of what’s coming up, and have shared it here.  I have a few friends who have subscribed to it so we can work out together occasionally.

I use Joe’s Goals to keep track of my progress.  Joe’s Goals lets you set, yep, goals, and mark off each day you complete a goal.  It’s similar to Jerry Seinfeld’s calendar technique, and provides motivation by encouraging you not to break the chain.

For mapping out running routes I use Gmaps Pedometer.  You can save routes for future reference or for sending to friends.

There are plenty of other tools to help you keep a workout shcedule, and there are plenty of articles that discuss ways to motivate yourself to begin and maintain an exercise routine.