Australian discus thrower Matthew Denny has all but booked his ticket to Tokyo, throwing an Olympic qualifying standard at the Oceania Athletics Invitational Series.

Denny threw a personal best of 66.15m on his second attempt on the Gold Coast on Saturday and is currently ranked No.8 in the world.

The 25-year-old, who competed at the 2016 Rio Games, said achieving the qualifying standard was particularly enjoyable after an injury-riddled season with rib issues.

"I got injured in November and that took me back about three-and-a-half months, and started the domestic season late, so to come back to where I was and I haven't even peaked yet is really exciting," Denny said.

After beating the Olympic qualifying mark last weekend, Peter Bol backed up that effort with the fastest 800m by an Australian on Australian soil, clocking a 1:44.62.

"Today there was no pressure, so we were hoping for 1:43 but I'm happy with that," Bol said.

Australia's sprint women narrowly missed out on an Olympic qualifying mark of 43.04 in the 4x100m, clocking a 43.11.

Despite not making the cut for Tokyo, the time was still the fastest in history by an Australian women's team on home soil.

In the women's 100m, Olympic-bound Riley Day posted an 11.18 to narrowly defeat national champion Hana Basic (11.20).