More than 3000 athletes piled through Kings Meadows High School and Symmons Plains for the NHSSA inter-high cross-country and the Tasmanian primary all-schools cross-country competitions.

Riverside High School lived up to their lofty expectations at the Northern event, winning the inter-high division one carnival once again, which was predicted by NHSSA executive officer Andrew McCarthy.

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"Riverside have been the dominant school for a lot of years," he said.

"Individually, they don't always win the race but they've always been really strong in the teams.

"In division one, the first four runners count towards the teams and in division two it's the first three."

Reigning division two premiers Deloraine were victorious once again ahead of St Marys, with other schools not providing enough students in every division to remain eligible.

While the North's elder students were running laps around Kings Meadows, the future of Tasmanian athletics were giving the muddy terrain of Symmons Plains their best shot.

With more than 2500 students from 155 schools around Tasmania participating in the annual all-schools event, Athletics Tasmania executive officer Gabby Steele stressed how important Tuesday's event is to the state's sporting calendar.

"It's a participation event and is open to all schools and children of all abilities, whether they came first at their school sports event or they came within the mix," Steele said.

"This is about children coming together with their friends and having fun and schools coming together and supporting an event where children are physically engaged in sport.

Aided by a surprisingly warm day at the Supercars venue, the crowd flocked into the racetrack with people of all ages showing up to support their friends and family.

"We've been blessed by absolutely superb weather, so that actually brings the mums, the dads and the grandparents out to watch."

Continuing to grow, the all schools cross-country event brings both communities, school and sport, together and gives the students an opportunity to test their physical capabilities in a challenging event.

"The event is growing and it doesn't matter what we put in place, it always will need to alter something for next year's event."

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