 Due to the suburb's relative isolation and hilly geography, it contains very few roads and does not conform to Adelaide's typical grid pattern – despite the suburb's age. The earliest road to be built was Mount Osmond Road, and done so by early developers in 1882 to make the suburb more attractive to prospective buyers. Mount Osmond Road remains one of two sealed roads which can today access Mount Osmond and is located to the south of the suburb. It begins as the first interchange on the South Eastern Freeway (formerly Mount Barker Road) and then winds around the Mount to the top of the mount and around the golf course. The other sealed road that provides access to Mount Osmond is Hayward Drive, which starts in Beaumont and then winds around the hills to meet the rest of the suburb's road network.
