rm -rf : Many thanks for the recommendations and the very thorough quick start instructions. Much appreciated!

I've heard of GC, but had no idea it is a free program. Based on your description it sounds like it would meet my needs. I'll definitely check it out.

UPDATE: Just finished watching the video you linked in your response above, and it really helped put the data into perspective. This trend analysis graphing functionality is exactly what I'm looking for. I'll be downloading the program and giving it a try. Golden Cheetah for the win! And I'll also be picking up the Joel Friel books.