Use Sundance for I-90 convenience or Hulett for proximity. Either way, make the Tower your first major stop, not the last thing squeezed into the day.
Day one: arrive through the towns
Afternoon · Choose your approach
From I-90, pause in Moorcroft for the West Texas Trail story or in Sundance for a downtown walk and the Crook County Museum. Continue to your lodging before dark.
Evening · Settle into the landscape
Eat in your home-base town, check the next day's park conditions and step outside after sunset. Dark skies are part of the trip.
Day two: the Tower and the slow road
Morning · Devils Tower
Arrive before 10 a.m. in the busy summer season. Stop at the prairie dog town, walk the Tower Trail and visit the ranger desk or bookstore if open.
Lunch · Hulett or the park entrance
Choose a seasonal option near the park gate or drive north to Hulett. Confirm hours before making any restaurant the hinge point of the route.
Afternoon · Hulett to Aladdin
Continue through Hulett and take the slower road toward Aladdin. If you are bound for the Black Hills, carry on to Belle Fourche; otherwise loop back toward Sundance.