A lot.
Earlier this year, I decided that my goal for this year would be to try and walk 2018 miles in 2018.
As of today, I'm on my fifth pair of shoes for the year, and I have just a little bit under 100 miles to go to reach that goal.
As of tomorrow - if I can get out and do my daily walk as planned - I will have walked twice as much this year as I have last year. Including running two (official) half marathons, and walking several unofficial "What the heck, let's see fi we can do 13 miles today" hikes.
I don't want to walk nearly as much next year. I'm happy that I set myself a hard goal, and very happy that I'm going to meet it... but walking 5+ miles every day gets old fast. I do like to take a longer walk every now and then, but I think I will enjoy my time much more if I don't have to focus on mileage.
So I think my goal for 2019 will be to walk in 19 new cities. That should actually be pretty easy - I think I've managed a good two dozen different locations outside of Pittsburgh proper this year, just looking for new places to wander.
When I first started walking last year, I was doing it for my health. Now, I'm doing it because it's a habit, and because I enjoy visiting new places and taking pictures of interesting things along the way. I've been posting my photographs on Facebook, but I've been experimenting with using Flickr instead these days. If you'd like to take a look, you can find me there as Walking Samrobb.