Hi guys, I'm 19 years old and would really like to get into competitive road cycling. To start off I'm somewhat fit and have been trying to do a few bike rides every once and a while. Right now I can do a good 15 miles on a mountain bike and roughly 20+ miles on a road bike. I would like to race for my school next road bike season which is spring, so a few months out. What kind of training should I be doing to boost my performance to 70+ miles on a road bike. If I am determined will I realistically have a chance to compete when spring comes? I'm pretty determined and I am ready to take on a serious workout routine with 2-3 hour bike sessions multiple times a week. Let me know what you guys think. Thanks in advance.