Right now mt biking in 30-50 F weather, I'm wearing heavy tights (9 oz lycra) over heavy shorts... I'm not as fast on the trails as someone might be on the road. For when it gets colder I'm thinking about trying some of my climbing pants made out of Schoeller Dryskin.Heck if I can ski in 'em, why not bike? They've got a good cut too.
Irulan