I went to college at PSU which is in State College. I didn't cycle at the time so can't give you any info on clubs but I would imagine proximity to such a large and active university would mean there are some active clubs (outside of school sponsered ones, that is). I mean, there has to be lots of alum and profs that cycle in the area and the roads seem like they would be great for longer rides. As for mtn biking, there are lots of nice mountains converging around that area so I would imagine good dh and such.

I did some backpacking when I was in school, and the mid-state trail runs not far from State College, which offers some nice multi-day backpacking options. The entire area is pretty rural and there are lots of parks in the area and there are lots of opportunities for hikes, from day to longer in the area. You may be able to get information from the PSU Outing Club who I know is very active (they have a website you can look at) and can probably point you in the direction of clubs and groups that are into the sports you're into.

As for skiing, not much in that area. State College has Tussey Mtn which isn't much more than a hill.

I've driven through Altoona but don't know much about it but State College was a very outdoor-friendly town (perhaps because of the uni) but if you move into that area I hope to god you enjoy football!!

K.