Bill from Springfield, IL on 7/9/2023 5:39:42 AM:
You can give these a try (I'm not sure how current the info is). Hill City is close to midway on the trail so you could ride either direction. Good luck.
Rabbit Bicycle Rentals & Shuttle Service https://www.rabbitbike.com/
Bike rentals/repair: 605.574.4302
Shuttle service: 877.469.9446 Toll Free
Mickelson Trail Adventures: Hill City, SD http://www.mickelsontrailadventures.com/
Bike rentals: 605.391.4491
Shuttle service: 605.574.4094 866.574.4094 Toll Free