Right now, there are only the four workout types used by triathletes. Hopefully there will be more at some point, but for now, you can make new activities as Cycling Trainer. It's the only one that doesn't require mileage. You can also put walks, skis, and skates in as running if you want to track mileage. I'll probably create a route for each of my other types of workouts, just so I can sort them.

For the drawings, all that counts is the total time.