I also do most of my riding solo and in rural areas. I let my DH know my route and will send an update if I decide to ride longer than planned. I stay alert and dress conservatively. I have had guys yell at me from motorcycles or vehicles, but I'm used to that from my many years of running and just ignore it. It startles me more than anything. I have done some S24 tours (camping) solo as well and haven't had any issues. I'm planning one for Labor Day weekend.