You don't have to live in the same town or — or even the same country — as your best friend to maintain a strong friendship. Even so, it can be challenging to live far away from your favorite people.

We asked experts—and people working to maintain their own long-distance friendships—to share their favorite ways to keep ...

If you see Alexandria Agresta breaking into a wide grin, one of her best friends—who lives thousands of miles away—probably just sent her a meme or an inspirational quote from Instagram. The person ...