Just scrolling old threads and came across this one ..

My father Mac Dowding [ 1917 - 1999 ] and his brother Ed Dowding [ 1919 - 2018 ] -my Uncle of NSCC fame talked about Seagrove which was used in the late 1940's - early 1950's
The site can be still be seen on Google Maps - off Seagrove Road on the Peninsula near Clarks Creek, Waiau Pa and is part of a farm - but no indication of the track which was a simple shape;

This is a rendition of the track ; courtesy of Bob Homewood, NSCC member for many years, and serious car driver.

Name:  Motor Racing Seagrove #1 The Track Bob Homewood.jpg
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and an article on racing there - also from Bob Homewood

Name:  Motor Racing Seagrove #2 Magazine article Bob Homewood.jpg
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A further report " Around the Clubs "- posted by Milan Fistonic on the Northern Sports car Club thread some time ago.

Name:  Motor Racing Seagrove #3 Magazine article Milan Fistonic .jpg
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There are many lost tracks in New Zealand- Baypark and Levin probably the best known with others thta were popular in their day.

Mairehau, Christchurch
Matamata - Waikato
Napier - Hawkes Bay
Paritutu, New Plymouth
Ryal Bush, Invercargill
Waimate - Canterbury

and many more ;

The if we look at Speedways and Hill Climbs the list is large.