Thanks folks! About halfway through I was getting really sweaty and tired, but I was armed with raisins which I guess helped. I mean, I've ridden up to 1.5 hours straight outside in the park, but it feels really different on the trainer and trying to keep a steady pace. I really have no idea if what I did would be considered much of an accomplishment by most people, but it felt like one to me!

Never checked out pedalradio before... headed there right now!