Few areas offer such variety as Thorndon Park and its surroundings. Ancient woodland and historic deer parks lie close alongside recently planted woodland and a landscape of small pastures, while nearby is the high forest of Hartswood and former common land.
South of Brentwood, just west of the A128, which runs from Ongar through Brentwood to join the A127. The main entrance to Thorndon North is off The Avenue, which links the A128 and the B186 (Brentwood–South Ockendon). The entrance to Thorndon South is off the A128 just north of Halfway House.
Brentwood railway station is about 2km (via Hartswood and Little Warley Common) from Thorndon North. Buses from Brentwood Town Centre run to Eagle Way, Warley.