At 83 and 74, my husband and I still go on multi-day walks all over the world. We have no plans to stop anytime soon.

The author, shown posing on a trek through the Silvery Dolomites, said she and her husband will continue traveling to take long walks for as long as they can. Courtesy of Louisa Rogers. My husband and I have been trekking all over the globe for more than 40 years. We've tackled trails like the Muktinath in Nepal and the Coast-to-Coast across northern England. We're not uber-athletes, but we've found walking is a way we can continue to explore new places. For more than 40 years, my husband B...