The Albion Park product became the first woman to simultaneously hold the 1500 metre, 3000m and 5000m Australian records in Saturday morning (AEST).

Returning to Doha, the scene of her first World Championships a year ago, Hull bettered Benita Willis' 17-year-old 3000m mark by two seconds.

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The record was the 23-year-old's third in 43 days, having shattered Willis' 5000m mark in August before setting a new 1500m record in Berlin a fortnight ago.

The improvement in Hull's performance throughout the past 12 months was clear on Saturday.

Just a year after she narrowly missed the final of the 1500m at the World Championships, the US-based athlete showed she is now capable of mixing it with the sport's elite.

The event was eventually taken out by current 5000m world champion Helen Obiri in a time of 8:22.54. Hull was 10^th in 8:36.03 after fading in the final kilometre.

Making Hull's improvement even more remarkable has been the fact she has been away from her training squad for much of the year.

A member of Pete Julian's elite Nike squad, the star returned to the Illawarra in March as coronavirus continued to spread around the world.

With Julian assigning Hull's program, she ran under the watchful eye of her father, and junior coach, Simon.

The former University of Oregon star has expressed surprised at the results she achieved throughout her six weeks in Europe and she's hoping to use it as a launching pad for a busy 2021 that includes the rescheduled Olympics.

"I want to keep competing and I want to keep finishing higher and higher," Hull told Athletics Australia.

"Now I know I can finish in the top handful with these women, I am backing myself in to be in it and not just thinking about times and records but to be competitive at the top level."

The performance came as fellow Illawarra athlete Ryan Gregson watched Stewart McSweyn break his Australian men's 1500m record.

The 30-year-old had held the mark of 3:31.06 since 2010, with his younger rival and training partner coming close to bettering it on a number of occasions in recent weeks.

This time McSweyn made sure of it, winning the event in Doha in a time of 3:30.51. Gregson finished 12^th in 3:37.75.

The emerging 25-year-old has been in record-breaking form of late, bettering the national 3000m mark in Rome a week ago.

With faith in his fitness, McSweyn ran a bold race, opening up a gap on the field before finishing well to secure a dominant victory.

"I came in knowing I was in good shape," McSweyn said.

"That's why I got right on the pace because I like running to find out how good I am and not worrying too much about other people."