More, who is coached by Caster and Violet Semenya in Tshwane, is targeting a top three finish at the race, which will take place at Marks Park Sports Centre.
The sold-out event has attracted 5 000 entries, with the women’s elite race starting at 9:45am, followed by the men’s race at 10am.
With three-time winner Glenrose Xaba absent as she prepares to compete in a half-marathon in Hong Kong on the same day, the title and the R20 000 winner’s prize are up for grabs.
It has been a breakthrough season for the African 1500m champion, who is proud of how far she has come.
“I am really happy and proud of myself. It has shown me that hard work, consistency and discipline can pay off if you believe in yourself. You need to dream big and fake it until you make it,” More told SABC Sport.
Xaba recently made an emotional speech at the Spar Grand Prix awards ceremony after being crowned series champion for the fourth time.
She also encouraged other runners, including her Boxer Running Club teammate More, to challenge for the title next season.
More says Xaba’s backing has inspired her, but she knows the competition will be tougher as more athletes continue to improve.
“The pressure is getting higher because the girls are running faster now. I am looking forward to healthy competition and will fight for the title. Hopefully, by God's grace, I will have it in my hands. I am not willing to back down.
“I don't want to put too much pressure or expectations on myself, but I am in it to win it in 2027,” she said.
More is also hoping to improve her personal best times next season while sticking to her training programme.
For now, her attention is firmly on Sunday's race, where she believes a podium finish is within reach.
“Yes, I am running on Sunday and I want to finish in the top three. The 5km is tough because you have to run smart. If you go out too fast, you can run out of strength. You need to manage your race,” she added.
After the Boxer Super Run, More will turn her attention to preparing for the track season in February.
Her biggest goal is to qualify for next year's World Athletics Championships in China in the 1500m.