In reply to mloskot:
it all depends what type of climbing.
The last 6 months I have been training for a trip to Alaska which has been broadly the following:
2 or 3 runs a week, Long slow distance, tempo and hill intervalls.
2 crossfit sessions a week
load carries a few times week (which are now over 100lb) and sledge pulling on Sundays.
The crossfit has definately helped me get a strong back and core and strong legs for humping heavy loads and plodding up non technical ground. I also believe it has helped speed up my recovery time.
Last saturday I did the welsh 3000's in 13 hours including getting to the start and off the finish in the same day. The following day my energy levels were low but my legs were barely sore - in years gone by they would have been in absolute bits.
So it all depends what your goals are. If you goal is to onsight 7B+, then you would be better off spedning 5 nights a week in the climbing wall and going on a diet. But for alpine/expedition climbing you need to train differently. Again its all about specifity but for it to be specific you first need to define a goal.