There's a reason we named this article, "tips for a walking adventure" and not "tips for walking around the block." A walking adventure is just that, an adventure! So the first thing you need to do is think big. Yes, you could walk the Great Wall of China, or walk around Washington, D.C. or something like that, but that's not the type of adventure we're talking about.
Think more along the lines of a walkabout in the Australian wilderness. Or maybe a hike up to Machu Picchu. And don't rule out a trek up a volcano in Mexico. Don't be limited by your local geography or your own ideas. Where have you always wanted to visit? Find that place then search for the most adventurous walking journey you can find.
You're walking adventure needs to be two parts adventure and one part walking. There are lots of Web sites that can set you up with the type of adventure you're looking for. You can search from mountains to deserts to caves. Just remember the old saying: Go big or go home.