I started riding trikes in 2009. I started keeping riding Logs in 2013 when it became clear that I was hooked for the long term. I like having the information a Log provides. I just turned 68 and a Log helps me to understand how well or shitty I'm doing as the years pile on.
Between 2009 and 2012, before I started my Log keeping, I figure I rode a total of about 4,000 miles. Most of those miles involved climbing similar to 2013 and most rides included towing all 50 lbs of my dog Betzi. So it seems like my total gain for those years would about 300,000.