Iron Creek Horse Camp ($22, recreation.gov)
Double your mileage (and see Mt. Rushmore) by adding the Willow Creek Rushmore Trail to the circuit. fs.fed.us/bhnf
Medium rare at the Sage Creek Grille (605) 673-2424
Hit the Little Spearfish Trail for a six-mile moutain-bike route with smooth downhill and many chances to catch air (rushmorebikes.com). Or climb a granite spire you saw from Harney’s summit (sylvanrocks.com).