Supercars night race to test endurance

Almost forgotten in the hype of a historic Supercars night race is the Sydney leg will be a significant endurance test.

Drivers this weekend will race under lights for the first time in Australia since 1997's Calder Park round.

While there is a sense of unknown for the field about how being on the grid after dark will impact racing, the 300km spectacle provides a challenge in itself.

It will be the longest single-driver race since 2003, something Tickford Racing's Mark Winterbottom thinks can't be underestimated.

"On the Gold Coast, we do 300 kilometres but we share it with someone else," Winterbottom told AAP from Fox Sports' Sydney SuperNight 300 launch.

"It's not just going to be a physical…