It's 480km from Ceduna to the WA border. Along this stretch you can get a bed and a beer at Penong (72km from Ceduna), Fowlers Bay (141km), Nundroo (151km), the Nullarbor Roadhouse (295km) near Head of Bight, and at Border Village on the border itself.
Wheat and sheep paddocks line the road to Nundroo, after which you're in mallee scrub for another 100km. Around 20km later, the trees thin to low bluebush as you enter the true Nullarbor (Latin for 'no trees'). Road trains, caravans and cyclists of questionable sanity are your only companions as you put your foot down and careen towards the setting sun.