a1penguin

This! How many miles a week are you riding? For a long time I was commuting and doing 60 miles per week with 9 miles each way to and from work. Not very fit. I started doing 20 mile rides on the weekends and one day during the week I detoured coming home from work for another 20 miles. I mixed in some elevation (I suck at hills for sure). This improved my fitness and I started doing 40 mile rides and then longer. I try to ride a metric century (100 km = 62 miles) every month. Riding more is the key. Do intervals. Ride longer rides. In six months, you'll notice a big difference. A road bike with drop bars will be more aerodynamic riding position, wheels will probably be lighter and it might even make a noticeable difference is average speed.