Athletics Australia has announced a team of 57 athletes for the IAAF titles in Qatar which run from September 27 to October 6.

Additional selections should push the team size over the record 61 sent to the 2017 world championships in London but McSweyn is unlikely to receive any Tasmanian company.

Having run the 5000 and 10,000-metre double at last year's Commonwealth Games on the Gold Coast, the 24-year-old King Islander has shifted his focus towards a 1500m and 5000m double in Doha.

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McSweyn's 1500m personal best time of 3:31.81 set at the Monaco Diamond League meet in July established him as the second fastest Australian ever behind only his Melbourne Track Club training partner Ryan Gregson, whose record of 3:31.06 was set at the same meet in 2010.

It was also a new Tasmanian record, the ninth fastest time in the world this year and earned McSweyn a qualifying time for both the world championships and next year's Olympic Games in Tokyo.

He is currently ranked ninth in the world over the distance and 15^th over 5000m in which his personal best of 13:05.23 was set in Brussels a year ago, although he also clocked 13:05.63 in London two months ago.

Launceston-born McSweyn believes the timetable for Doha is more suited towards challenging over the shorter double than he was able to achieve at the Commonwealths where he came fifth in the 5000m but then struggled to finish 11^th in the 10,000m.

The 5000m will be contested on days one and four with the 1500m following on days seven, eight and 10.

In the 1500m McSweyn will line up alongside compatriots Gregson, of Victoria, and West Australian Matthew Ramsden, who are both also trained by Nic Bideau.

Australia's other qualifiers in the 5000m are Morgan McDonald, of NSW, and Queenslander Patrick Tiernan.

Along with most of Australia's leading marathon runners, Launceston's Milly Clark has opted against running the gruelling 42km distance in Qatar.

With the race scheduled to start at midnight to avoid daytime temperatures in the 30s, Clark is instead focusing on next year's Olympics.

The 30-year-old, who was Australia's highest placed finisher when she came 18^th in the marathon at the 2016 Olympics in Rio de Janeiro, clocked a Tokyo Olympic qualifying time of 2:28.08 at the Gold Coast marathon in July.

The result continued a successful season for Clark who also won the Canberra Half Marathon (1:15:36), Run the Bridge 10km in Hobart (34:28), MUAC 5000m in Melbourne (16:09.24) and the Tasmanian 1500m title in Hobart (4:23.05).

Hobart duo Hamish Peacock and Jack Hale have also reset their sights to Tokyo after failing to record qualifying times for Doha.

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Peacock, who turns 29 next month, failed to record the 83m qualifying distance that would have secured him a fourth world championship appearance.

The Rio Olympian and two-time Commonwealth Games medallist's personal best of 84.39m was recorded back in 2016 while his season's best of 78.12m was set when winning his fifth national title in Sydney in April.

Peacock also came fourth at the Oceania champs in Townsville earlier this year.

Australia will have no representatives in the javelin competition in Doha while the country's failure to qualify a 4x100m men's relay team also killed off the selection hopes of Hale.

The Melbourne-based 21-year-old's 100m personal best of 10.19 was set in Brisbane in March.

Rohan Browning, of NSW, will be the sole Australian representative in the 100m at the world titles.

The St Leonards Athletics Centre is gearing up for a busy week of school championships.

The Northern Sports Association of Tasmanian Independent Schools will be staging its athletics carnival from 9.30am to 5pm on Thursday featuring six Northern schools with approximately 600 competitors.

Then on Saturday the state SATIS carnival will follow at the same venue from 9am to 4.45pm.

A total of 18 schools are expected to take part with approximately 1000 competitors.

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