GPSLog Labs is a site I've been working on where you can upload logs from your GPS tracking device and map, graph and analyse them.
It will let you track your exercise and training whether your a cyclist or runner, and can also be used to track your mileage and keep a diary of your activity.
It builds on a few of the things I've posted about here before, and there's some more information on the GPSLog Labs blog.
Signing up is trivial as it supports OpenID, I'd appreciate any of your comments and suggestions and hope the site interests some of you.