In Big Sky country, a pandemic-era fly-fishing getaway

In addition to a surplus of wide-open spaces, both states have a blend of majestic mountains and sprawling high desert. Much of the region is more than a mile high in elevation. These are states of extremes: One day in Montana’s Madison River Valley, a 37-degree morning turned into a 99-degree afternoon. And both states have a top speed limit of 80 mph, ramping up the feeling of freedom on the open road.