WARWICK runners Robert Stewart, Ross Leggatt, Pat Sinnott and David Trahair are competing in a 10th successive 500 Summer Challenge for the Endeavour Foundation this weekend.

Stewart, a Warwick State High School teacher, will be joined on the run by three fellow Warwick High teachers and seven students as well as some Pentath-run regulars in the Warwick team of 19.

The challenge starts in Brisbane at 4.45am Friday with two groups of seven runners from each team running around the University of Queensland campus in two groups.

The challenge competitors then head to Beaudesert where the event, formerly known as the 500 Summer Relay, starts again at 8am.

Runners take it in turns in relay format from Beaudesert to Rathdowney and then Boonah.

The group then travels to Warwick with accommodation and meals at Slade Campus before the event resumes at Yangan at 4.45am Saturday.

The runners proceed through Emu Vale and Tannymorel to Killarney and then through Murray's Bridge to Warwick for a brunch mid morning.

After brunch, a criterium is held around Leslie Park where six runners from each team will race three loops of the roads around the park before heading north on the back road to Allora, Clifton and Nobby for a late afternoon finish at East Greenmount.

The Warwick team will camp in a school hall in Toowoomba before another 4.45am start on Sunday at the University of Southern Queensland.

Six runners compete in an early criterium as the sun rises before teams head east for brunch at Gatton and a lunchtime finish at Lowood.

Trahair, a former WIRAC dry courts co-ordinator, is bringing two runners from Brisbane to make up the team of 19.

Warwick High held a fundraising dinner at the Condamine Sports Club which raised close to $500 towards the entry fee of $3000.

Money raised in the annual Pentath-run and a contribution from each runner make up the $3000 which goes to the Endeavour Foundation.