Tallent, the younger sister of race-walking champion Jared, is desperate to stay fit to secure a ticket to her second Olympics so she can have a front-row seat to watch partner Mitch Morgans.

"I'm so excited. It's not every day we get to compete on the same team together," Tallent said.

"So this is motivating me way more than I have been because it would be so fun to share that experience together.

"You wouldn't believe how many times he's told me to train or do extras, he's been good at pushing me.

"Jared had all the walking expertise and motivated me as well. Mitch and I do different sports, so it's less about technical stuff and more about motivation."

Tallent and Morgans were part of a group of Canberra-based athletes to be put through an Olympic processing session at the AIS this week.

Canberra runners Melissa Breen and Lauren Wells were also invited to the sessions where Olympic hopefuls are fitted for their Australian uniforms and given advice by ASADA officials.

Tallent has been dogged by injuries since making her Olympic debut at Rio three years ago, where she competed in the 20 kilometre race walk despite having stress fractures in her legs.

She has set her sights on four races in Australia, Japan and China at the end of this year and start of 2020 to secure her selection.

The 26-year-old has spent most of her spare time buried in research books for her masters degree in clinical psychology, but will put study on hold next year to focus on Tokyo.

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"I'm hoping I can build back to where I was at the last Olympics, and I started this year well," Tallent said.

"Having Tokyo right there makes you that little bit more motivated as well. I know it's going to be hard [to get there], but I'd like to get there."

Gymnast Morgans competed at the Commonwealth Games on the Gold Coast last year and is hoping to take an Olympic-sized step in Japan.

"Coming here today makes it real and then the world championship trials [next week] really are that first step," Morgans said.

"Listening to Rach's stories about the Olympics ... that's exciting. We haven't spoken about what it would be like too much, but if we both get a ticket it will start then."

More than 700 Australian athletes and officials have been fitted for their team uniforms, with selection events to ramp up in the coming weeks.