Originally Posted by
Lithuania
You will be racing as a 4 in cross and I suggest you enter the C race instead of the B race.
Mountain bikes are totally fine as long as you dont have forward facing bars as flarge pointed out. I would suggest slapping on some smaller tires if you have them around though. You will be slower on a MTB than most guys on cross bikes.
+1
Just show up and have fun. I'm helping some 3's get into cross, and they're doing great BUT realize it's a whole different type of cycling.