You can enter this event here.
From the official event’s Facebook page:

‘Its happening finally. Welcome to round 1.3

WE DON"T JUST LOVE CX - WE LOVE KNOBBIES TOO
We have race categories for just about everything and everyone. Mens; Womens; Kids; Singlespeeds; Mountain bikes – all are welcome (hey, if you've got a unicycle, we'll all stop and laugh). And, if we get the numbers, we’ll even have separate categories for Juniors, Masters, maybe even Ex-Pros 

$15 to Enter And you get spot prizes galore and some post race refreshements. KIDS RACE FOR FREE

ROUGH TIMETABLE FOR ROUND 1.3

Our Fog City Cyclocross Round 4 kicks off 18 August and here's the cunning plan #crossiscoming #crossneverwentaway #passionnotprofit #12yearsofcrossinhamilton #butwhoscounting

8:00am Start devious course setup
9am Registration open (bribes available only at the Fog City chief judge’s discretion)
10am Course open for pre-ride recce and ride through with Fog City peeps
10:30 Kids Race on Shortened Course
10:50 Pre-race briefing
10:55 Hecklers warm-up and de-tune cow bells - riders to the start line to stand and get cold
11am Race Start #skidsandgiggles

11:08 First slanderous comments from hecklers #welikecx

11:32 Hecklers start to peak #crossmakesmehappy

11:45 Bell Lap – with optional refreshing hand ups

12pm-ish Slaps on the back followed by a quick course pack down

12.30 Prizegiving Ceremony while munching our world famous chips with mayo washed down with some more refreshing recovery drinks. Spot prizes galore #wehavethebestsponsors #crossmakesmehappy #ipromisetocleanmybikebeforethenextround

All of this wouldn't be possible without our awesome sponsors Croucher Brewing Laroma Coffee Co.. Simple Race Timing Velo Workshop Continental Bicycle Tires GiroSportDesign WorrallsNew Zealand Endurance Electrical’