Ya know, its pointless to go with a ham radio, if all you are looking for is communicating on the trails with a group. More than likely, none of them will have a ham license, and even if one or two do, it becomes quite complicated to have someone relay between ham and cb.
First question I'd ask before suggesting the OP go out and study for a ham radio test, then buy a radio after he/she passes the test, would be:
What do you intend to use it for?
Next would be:
How much are you willing to spend on a radio?
Then I'd ask:
Do you expect to use your license, and radio, more than once in a blue moon?
A regular old cb setup will run you around a 100 bucks with antenna, mount and radio, whereas a ham that is capable of being used on the cb frequencies (illegally, might I add), will be around 400 bucks minimum for the rig, then another 30-40 bucks for antenna and coax.
And if you do plan on doing the ham route, be warned, that 400 dollar radio will not allow you to use it on the ham bands a technician license allows you on, so plan to get your general license (that means you take TWO tests).
Of course, you can spend a bit more, get a Yaesu FT-817ND for around $660 and that will allow you to modify it for cb, as well as use it for VHF/UHF frequencies you're allowed on as a tech license holder, and you can even modify it to be used on FRS/GMRS frequencies.
Don't get me wrong, I love being a ham, have had my license since '91, and I'm an extra class license holder, I have an Icom 706mkiig in my truck that I use for everything, and I have probably about 5 or 6 grand worth of radios and equipment laying around here, but I don't suggest anyone get a ham license unless they're truly interested in ham radio. I know a few friends who I helped get their licenses, they went out and bought some nice radios, and about 2 years in, they got bored with it and gave it up. To me that's just a waste of time and money and really doesn't do any good for the hobby.
So, my suggestion would be to get a nice cb that has just two knobs, volume and squelch, preferably from either Cobra or Uniden, install it and just have fun with your sub-100 dollar investment, knowing that if you're going wheeling with a club, chances are most everyone has a cb, and if its an established club, most likely a requirement for running trails!