For the way home we consulted the COVID outbreak map, trying to avoid stopping in virus hotspot counties. We decided 5 days of driving is lots more manageable and made campground reservations for all but the last night. We only stopped for gas, bathroom and sleep.
Day 1: Phoenixville PA to Beverly Shores IN (PA, OH, IN)
Dunewood Campground in Indiana Dunes National Park
Day 2: Beverly Shores IN to Ashland NE (IN, IL, IA, NE)
Eugene T. Mahoney State Park
Day 3: Ashland NE to Hayden CO (NE, WY, CO)
Yampa River State Park
Day 4: Hayden CO to Overton NV (CO, UT, NV)
Echo Bay Lower Campground in Lake Mead National Recreation Area
Day 5: Overton NV to Oceanside CA (NV, AZ, CA)