Mark from Saint Louis, MO 63144 on 5/15/2025 7:05:39 AM:
Hi Rick,
Right next to the Mickelson Trailhead sign in Deadwood at 103 Charles St. you'll find a large parking lot. I parked my SUV there for 4 days in 2023. At least at that time, there was no charge to park there.
There are also 219 free parking spaces at the Deadwood Welcome Center at 501 Main Street. Although they probably fill up fast in the summer.
https://www.cityofdeadwood.com/community/page/welcome-center-parking-lot
Good luck.