Launceston College's Sam Clifford and Kings Meadows High School's Abbie Butler recorded middle-distance hat-tricks to be named athletes of the meet at the Tasmanian All-Schools Athletics Championships.

Running the 2000-metre steeplechase in 6:47.73 not only broke state records from under-16 to 20 age divisions but catapulted 15-year-old Butler to number one on the Australian under-18 ranking list and into the world under-18 top-20.

"I was with my family when they announced that and we were all a bit shocked," said Butler, who is trained by parents Emma and Marcus and also won the under-16 1500m (in 4:41.75) and 3000m (10:16.46).

"I still don't really believe it but it feels pretty good."

Meanwhile, Clifford's under-18 victories over 800m (1:57.21), 1500m (4:14.30) and 3000m (8:11.40) were highlighted by being just two seconds off the 2012 record of Commonwealth Games triathlon champ Jacob Birtwhistle (8:09.12) in the latter.

Athletics Tasmania chairman of selectors Nathan Morey said the pair had dominated the meet.

"Sam's resume is already very good and to back up after the Burnie 10 last week having had some injury concerns last year is quite staggering," Morey said.

"His range is very impressive from 800s to 10,000s and he's worked hard on his tank as well as his tactics. At national or international level, it really helps to have that speed, just look at Stewart McSweyn.

"Because he's still 18, 3000 is his best distance but in the future he'll be looking at 5 or 10."

Morey said Butler's performances had impressed many observers, including Tasmanian Institute of Sport athletics coach Susan Andrews.

"Abbie moves so well and is so strong for someone of her frame," he said.

"To set four state records - three above her age group - is setting the ceiling high. If she can stick at it, be consistent and injury-free, her future is very bright."

Grammar's Mia Findlay topped an all-Northern podium in the under-18 long jump (5.29m) from Scotch's Isabella Foster (4.96m) and Alyson Wood, of Launceston College, (4.82m) and also won the 800m (2:23.04) and triple jump (11.19m).

Scotch Oakburn's Tom Watters claimed a double in the under-14 high jump (1.50m) and javelin (29.30m) while Josh Harris, of Kings Meadows (28.71), led home Scottsdale's Wade Lamont (30.55) and Conlan Lamont (31.71) in the under-16 200m hurdles.

Other Northern winners on Sunday included:

Averyl Quinn (Grammar) 12 years 1500m, 5:00.47; Seth Pfeiffer (St Patricks) under-16 high jump, 1.75m; Avery Thomas (Exeter) under-14 hammer, 20.66m; Kyle Digney (Port Dalrymple) under-16 javelin, 42.55m; Will Bottle (Riverside) under-16 3000m walk, 14:44.76; Sandy Wood (Scotch) under-16 800m, 2:04.95; Isabella Davie (St Patricks) under-16 800m, 2:24.03; Hamish Cook (West Launceston) 12 years shot, 6.42m; Jaydn Crawford (Lilydale) under-18 400m hurdles, 60.78; Zac Tyson (St Patricks) under-18 discus, 33.56m; Hamish Cook (West Launceston) 12 years 800m, 2:42.22; Jaxson Stone (Queechy) under-16 discus, 41.21m.

Hobart's Alexander McKillop recorded a national T36 B-qualifying time of 12.58 in the 100m and added the 200m in 27.63.

More than 300 athletes competed at the championships which act as the state team selection for those in the under-14, 16 and 18 categories. The national all-schools titles will be held in Perth in December.

Athletes in the 10-12 year age group also competed over the two days but have already had their national competition for the year.

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