I am a Rad Tech. I went to a two year program. My wife has a 4 year degree and I make more money than her. Having said that, I cannot brag about my salary...which pays me about 23.50 per hour. I work monday thru fridays 7:30 til 3:30pm....no call and no weekends. I spend most of my time in the operating room runnning C-arm xray machines for the surgeons....primarily orthopedics and neurosurgery. You can choose to do radiography, CT scans, MRI's, or branch off into something like nuclear medicine, ultrasound, or radiation therapy. My job leaves me alot of time for running. The market is a little slow right now around here. alot of new grads are having trouble finding full time work...but I can only speak for this area. It seems like it is cyclical. I remember a few years back you could walk into any hospital and get hired on the spot. Not sure if the weak economy has anything to do with it...but it does seem that our numbers(patient volume) are down lately relative to past years.
The program isn't that difficult, but you might find it competitive to get into a program. Usually there are lots more applications than seats available. Again...I'm speaking only for our local programs. It isn't exactly a medical epicenter right here....so it may be different in larger cities with thriving medical centers like Duke, Chapel Hill, Johns Hopkins, Cleveland Clinic, Bowman Gray, etc etc.
If you have been in school for awhile and have compiled most of the basics then you might be ahead of the game with your resume'...and given a leg up on those coming out of high school.
Like I said, the school isn't that difficult. Lots of clinical time spent in a radiology department. You'll have plenty of time to run while in school and when you get out and get a job. I have found it to be very much a 'runner's friendly' profession.