The Pauanui Half Marathon is among events going ahead this month - on Saturday, March 19.
There is a 21km event and 10km and 5km courses, with the option to walk all distances, starting and finishing on the beachfront by the Pauanui Surf Life Saving Club.
Organisers say they have made changes to reduce the number of people gathering, such as not allowing spectators in the race HQ area, but supporters can still cheer on from the beach where the course takes entrants, along with Pauanui Airfield, Pauanui Waterways and the off-road forest and estuary-side track of the Pauanui-Tairua trail.
"Our numbers are down to about half what they normally are, we have about 250 people committed but I think there'll be more at the last minute as people are worried they'll have to be self-isolating and won't be able to make it," says an organiser, Amanda Iggulden.
She said no more than 400 would be allowed, but she expected not to hit that number.