Here’s the link… https://apm.activecommunities.com/nrpr/Home

https://webcms.pima.gov/cms/one.aspx?portalId=169

Go to the website. The reservation system is very user unfriendly but stick with it and you'll get a reservation. GR has one loop that is First Come, First Serve.

Our first week there we camped in the first come, first serve loop. If I remember correctly that’s loop C. We then made reservations in the office for a week in February and another in March. Call the campground to make your reservation.

https://webcms.pima.gov/cms/one.aspx?pageId=1327 I never made a reservation to stay there, but I didn’t go during the busy season.

https://webcms.pima.gov/cms/one.aspx?portalId=169

If I remember right, we just registered at the campground (in September), but Pima County has a site for registering. Here is the link: https://webcms.pima.gov/cms/one.aspx?portalId=169

https://apm.activecommunities.com/nrpr/Home You will have to create an account and then pick your spot on the map. The most user friendly but will work for you.

You will find the information you need on their website.