Does anyone know how far the hike and bike sites (primitive) are from the main camp sites?

I think their, anywhere close to one mile, or two...

They are about 1/4 mile from main entrance to the park. Have fun!!

The place is huge, I don't know how far because I did not see the sites you're looking for, but my guess is that it's pretty far. We drove everywhere. We stayed in the main camp sites for RVs