37.9 miles:
1 hours,
5 minutes
Watch for majestic bighorn sheep climbing steep slopes as you drive this two-lane highway through Badlands National Park. Immense pinnacles, buttes and ridges flanking SR 240 continue to erode at a rate of about 1 inch per year. Amid the stark, hilly terrain of the Badlands, mixed-grass prairies support thriving communities of prairie dogs, mule deer and antelope.