I under dressed for the weather but I still over sweated and did not take in enough fluids. Gary put me through my paces and ran me into the ground. I tried to keep pace with him but he is way too strong for me right now. Between the wind, the pace, dehydration and my back killing me my last 1/2 of the ride was in total agony! I was feeling bad that I was slowing down Gary. I just didn't have anything left and struggled to finish. I told Gary to go ahead if he caught up with the other group let them know that I needed a ride home. He did catch them as I also caught up and informed them of my plight before he continued on to finish, I eventually caught up with the other group and struggled in with them. I hate hitting the wall like this, the only good thing it wasn't as bad as the last one! My training bike is so much harder to ride and keep the faster pace; it is also the cause of my lower back pains too!