Originally posted this, but more information has been forthcoming ;

1940's - late in the decade. First Hill Climb appears to be in 1946
1946 - 47.

Taylors Bay, Hillsborough - unsure which road was used.

Pokeno again no details on which road was used.

Ostrich Farm Road - late 1940's **- understand this may have been the Auckland Car Club's venue not NSCC ?

** Used in 1961 as have some results from an event there in November 1961 posted in previous thread
The plot / story continues ..
1950's

**
" Wairamarama Onewhero Road, Onewhero "

described as Wairamarama Road, Glen Murray in some details about an early Hill Climb - near Ron Roycrofts place - used definitely in 1956.
Thanks to Trevor for the correction of spelling - makes it easier to find on a map !!

1960's

Wharepapa Road, Helensville - used early 1960's ** maybe 1964

Birdwood Road, Massey - area now called Birdwood as Massey is a large area. used 1964 - 65, did they keep using it until Cosseys was used in March 1967.