Do you have straight/flat bars or riser bars? Also, if the reach is too long, how long is the stem? Do you know exactly what model Trek you have? You should be able to find it on bikepedia.com and post the link here. What type of riding do you do? How tall are you and what size is the bike?
EDIT: On a side note, I used to start having neck pain after riding for a little bit. Then it got to where it would start to hurt after just a few miles. Then I tweaked my neck and ended up at the chiropractor. Turns out my neck has been locked up the whole time but only seemed to show itself while biking. Once it got bad enough to result in a noticeable neck injury and I went to the chiropractor, he got it feeling Much better again and my neck pain while biking went away.
Last edited by 3speed; 04-01-12 at 12:01 AM.