Olympic cyclist Melissa Hoskins will be laid to rest in Perth today at a ceremony in her hometown, as the cycling world pays tribute.

Hoskins, 32, died on December 30 after being hit by a car outside of her home in the Adelaide suburb of Medindie.

She was a world champion cyclist and two-time Olympian.

Her husband Rohan Dennis – who is also an internationally renowned cyclist — was charged with causing death by dangerous driving, driving without due care and endangering life.

Cycling commentator Matt Keenan said Hoskins would be remembered as a world-class cyclist and friend.

"It's still really hard to come to terms with the fact that Mel is no longer with us," Mr Keenan told the ABC on Wednesday morning.

"There was a minute's silence before the start of the Australian Road Championships. And the power of that minute's silence is going to stick with me forever."

Hoskins announced her retirement from professional cycling in 2017, buoyed by a career in which she represented Australia at the 2015 and 2016 Olympics, and won gold in the women's team pursuit at the 2015 World Championships.

Mr Keenan said Hoskins' illustrious career extended beyond the track.

"She's a lot more than just a track cyclist…She was a winner in her own right on the road," he said.

"She'll be remembered as someone with a massive smile … a world-class athlete, a great friend to many, and particularly as a mother to two wonderful kids."

Tributes from family, friends, and fellow athletes have poured across social media in the wake of her death.

A funeral service will be held in Perth, where Hoskins was born, on Wednesday afternoon.

A memorial service will be held in Adelaide after the Tour Down Under.