Been riding as an adult since mid 80's. Started racing in 89 and raced until July 4 weekend of 96. Suffered a right knee injury during that race (mtn bike). Still got 1st place for my age group. Not bragging, just want to offer some background. 
At that point I had attained level of cat 3 road, and expert mtn bike. When it was still USCF and NORBA. Looks like now all racing is handled through USA cycling, correct? Right knee surgery spring of 97...recuperation period and was riding again that summer. Knee is fine, its a little "gravely" and minor clicks but its been checked out and all is good. My son was born Dec 2001, my daughter Feb 2003. Needless to say my wife & I were very busy after the kids came. Point is my last race was the one in 96. I bought a Fuji cross bike six years ago and fell in love with it, so much so that I have barely touched my road or mtn bikes. I started back on the road bike 10 days ago. I have long had osteoarthritis (OA) in my cervical vertebrae, (back of neck). I did 4-5 hours on the road bike, and afterward the OA flared up worse than ever. I see my MD in 1 week, but I don't think he will be able to do much for me. I'm taking Ibuproven and that helps better than Tylenol. Naproxen used to make me nauseous, but I will take some again and see if it helps. Lidocaine 4% patches don't help much, nor does Voltaren gel. I have long wanted my kids to watch their dad race at least one time. I'm all about building good memories for them. I'll be 62 in April, still in good shape. I still have some go-go juice left in me. I raced at 146-147 pounds and currently at 151. I want to do a cross race this fall near my home, and my kids are going to come watch. I believe the organizers do a masters race. Nice smallish course, the kids can walk around and see a lot. I know from experience that I need to start back doing road riding with a group for good training e.g. intervals, hills, sprints. I need help with this neck OA, its very painful. If there is anyone out there that can offer advice please do so. If there is a "health guru" on this forum I would greatly appreciate if I could contact that person. Trust me when I say that changing position on the bike via stem, bars, brake hoods, saddle height does not help. Thank you very much! 