It will be the first marathon by Crumpton (37) for two years since she failed to qualify for the 2006 Commonwealth Games when she raced in Canberra.
It will also be her first race since giving birth to her 14-month old son Lachlan and the serious cancer suffered by her husband, Doug.
"If conditions are good I'd like to run around 2hr 35min," Crumpton said.
"Temperatures are expected to reach 23degC and I race better in the warmth than the cold."Crumpton is not expecting to better the Olympic Games qualifying standard of 2hr 32min but could beat the B standard of 2hr 36min.
There is a record entry of 18,000 runners competing in the Gold Coast marathon, including former Australian triathlon champion Rina Hill who has won the women's sections of the Sydney and Rotorua marathons in the past two years.
Crumpton has won eight of her 14 marathons with a best time of 2hr 37min 3sec when finishing 33rd at the world championships in Helsinki in 2005,She beat Liza Hunter-Galvan, added to the New Zealand Olympic team for the Beijing Olympics this week, by five places and 3min.
Since coming back to racing this year, Crumpton has won the Buller half-marathon in 1hr 17min, been second to Olympian Nina Rillstone in the Christchurch half-marathon in 1hr 16min 38sec and won the Edmond Cup steeplechase at Wingatui.
Crumpton won the women's section of the Gold Coast marathon at her first attempt in 2003.
She first competed for New Zealand at the world mountain running championships in Austria in 1996 when she finished 25th.
She has represented New Zealand in road relays and competed in the world championship half-marathon and the marathon.
She was forced to give up running for eight months when her pregnancy took a tragic turn last year.
"The 12-week scan showed that I had twins but one had died and I was not able to run," Crumpton said.
"The Caesarean birth meant that I was not able to train for six weeks after the birth."
Crumpton returned to easy running late last year to ease the tension associated with the cancer suffered by Doug, who resumed chemotherapy treatment in Dunedin last month.
"Running helps me deal with Doug's problems," Crumpton said.
The running addiction has continued and it came to fruition last April when Crumpton (37) won her first New Zealand mountain running title on the Mt Campbell Range near Motueka.
She will be accompanied to the Gold Coast by her husband, brother-in-law Bruce Crumpton and Lachlan.
It will be Lachlan's first overseas trip.
Doug 's tumour has started to grow again and he has resumed chemotherapy treatment.
"We will be carrying a big medical bag and a doctor's letter with us when we travel to the Gold Coast," Crumpton said.
Doug's elder brother, Bruce, will be travelling to Australia to ease the burden for the family.
