A friend gave me a recumbent trainer. If I start hitting it hard to make up for my declining saddle time on the bike (hours at work increased significantly and I can't put in actual miles)....will it help in my training for an upcoming century? Or would a straight-up stationary bike be better?
Riding in your regular position would be better. Recumbents don't let you use your glutes the same way that a standard bike does. But it'd be better than not riding, and better than running.