A near ideal RV Park for us. Quiet, easy access in and out for our 42' 5th wheel, wide and very long pull through spaces on grass. Had the truck unhooked and parked in the space and still room to lower the toy hauler door with room left over. Wide spaces. No trees to interfere with satellite or turning radius. Nearly level. Good electric, water and sewer. The lady that runs the place is very helpful! They take Passport America. approx. 5 miles west of Rapid City and right along the freeway (make sure the maps on your gps are updated or it will take you someplace else......my gps brought me right to it but I just updated maps a couple of weeks ago). Camping World and a station that you can get RVs into for diesel is just across the freeway. A dirt/gravel driveway that is .4 (4/10ths) of a mile that's posted at 20 mph but that kicks up dust. I found that if you do it at 10-15 mph there's very little dust even with a rig this big. Older but very clean restrooms and laundry. Some smaller rigs and some very nice large rigs in here. Many, many spaces with some 50 amp and a lot of 30 amp. Not really an area where we need A/C in Sept. even though we've had great weather.
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What campers say
Three Flags RV Park is a small, well-kept stop near I-90 that most visitors praise for friendly, accommodating management and clean, functional facilities, especially showers and laundry. Sites offer full hookups and convenient access for day trips to nearby attractions; grassy areas make it pet friendly. Practical tradeoffs: being close to the interstate brings occasional highway noise, and some sites are on a slope or near utility lines, so site selection matters. A few guests noted intermittent Wi-Fi or isolated issues with site care or billing. Overall it's a convenient, clean park for transient stays if these tradeoffs are acceptable.
Our summary of 191 traveler reviews.