Highway 10 is a major roadway in the Kingdom of Saudi Arabia , stretching from the south to the east. It serves as a key artery in the Saudi land transportation network. Route of Highway 10 Highway 10 begins at its intersection with Coastal Highway 5 and extends eastward, crossing three provinces: Jazan , Aseer , and Riyadh . It passes through several cities and governorates, including ad-Darb Governorate, then heads north through Abha , Khamis Mushayt , Tathleeth , al-Khamasin, as-Sulayyil, al...