I've been logging runs on RunningAhead.com for about 6 years. When I first started cycling it was easy to log those workouts there, too. I like that I can easily look back at what I was doing a month ago, a year ago, or 6 years ago.

I also recently started uploading my Garmin to Strava, but I'm not as sold on it. I find it to be really slow and I don't want to pay for the added features. RunningAhead has everything available for free.