A long stretch of road, with many hills, stretches out ahead. This is the best possible way to represent how much distance you're feeling right now between you and your good friend. And it's a reminder to them that you never want to see this much time, or these many miles, ever come between you again. If you're feeling like you're missing someone special in your life, send this sentimental greeting to say exactly how you're feeling in your heart and to let them know just how much your friendship means.