Yeah, I see what you mean. I guess hiking seems more important because it is more different from my academic life. I would be hard pressed to give up all math/science activities - it's just that any individual one seems rather expendable, because I like the quantitative thought that goes into math and science, but am not too picky as to exactly what I'm thinking about.
With that in mind, I'm going to apply - I guess I'll see what the admissions committee thinks on the subject

Thanks for your reply.