I would talk to the folks that you wheel with. If it is only for trails, you could get a handheld. The CB has limited range. To really expand your mobile communication ability, study a bit and take the HAM exam.
I have a HAM multi band that I can reach out and talk over many, many miles, but have no real use for the CB. HAM is much more versatile. I was thinking about a CB for one trail run with a group of Jeepers. I gave up trying to find a CB that had what I have come to expect from the HAM radio. If it's for a group run, shop the pawn shops for a small CB unit under $25. Use a mag-mount antenna and a cigarette lighter plug for the power.