"Most people now are already entered, we get a few people waiting for their race packs [last night]," said Conder.
"Lots of questions about where to go."
The 10.5km course starts alongside Moutoa Gardens and takes in the Dublin St Bridge, then heads down Anzac Parade for a back-and-forth trip across the City Bridge, before continuing down Putiki Dr to the Cobham Bridge and running back along Taupo Quay and Somme Parade to the finish.
Full marathon competitors do four laps.
Top finishers can complete the course in less than three hours – as Rotorua's ultramarathon veteran Brendon Keenan comfortably managed last year – however after several weeks of very hot weather, Conder has heard from several entrants that they will be pacing themselves.
"Times will be probably down a little bit, with the heat."
The full marathon walkers led the festivities off at 6am, with the runners departing at 7.30am.
Half walkers and runners (two laps) depart between 8-8.30am, followed by the 5km corporate relay, which loops between the Dublin and City bridges, starting at 9am.
The 10km (1 lap) race is 10am, with the 5km race at 11.30am.
The new 1.2km Kids Fun-Run-athon for 13-year-olds and under, will begin at 12.30pm.