"It does mean a lot to me in that I am feeling well enough to do it and what has happened won't stop me. And I want the kids to see me doing it. Although it's going to take a long time to get back to feeling completely normal, it's a great starting point."
Knight is under doctor's orders to walk the circuit.
"The doctor said I should be fine so long as I don't head-butt anyone," she joked.
Knight had signed up to do the race several months ago after joining a "Yummy Mummy" fitness group on the North Shore.
She ran her first 5km race just three weeks before the attack and was enjoying a new level of fitness. Now she is determined to claw back what she lost because of her head injury.
She said the restorative head surgery came earlier than she anticipated - a week after she returned home to her family - which meant preparation for today's event had been limited.
But Knight said she was making the most of her physiotherapy sessions and had managed to get out with youngest son, 2-year-old Max, in the pushchair each day.
Knight said she would be supported on the race by close childhood friend Pippa Jinks and was especially looking forward to donning a voodoo doll-style costume for the occasion.
Knight's attacker, 17-year-old Hendrix Hauwai, has pleaded guilty to assaulting her and attempting to steal another woman's bag and will be sentenced next month.