Absolutely! Go for it and make sure to eat enough and take breaks when you need to. I started riding spring of 07 on my mountain bike. In Sept I found my wonderful road bike and did a couple 40 mile rides. In October I did a 75 with some hills and it was GREAT! (I was seriously out of shape before I started riding in the spring BTW) Go For It but make sure to eat enough!

Lora