I am new to riding, and have been doing to it for a couple of weeks now. I have been doing 3-4 mile rides and today I did 6.5 miles, I just ran out of daylight. Is there any thing I can do to help get me up to my goal of doing the Livestrong challenge next year. I am currently riding a Nishiki Mtb. with 1.75" comfort bike tires on it. I am looking at getting a road bike but the nishiki is going to have to work for a while until I can get the money for a decent road bike.