Round the Bays said in a statement its fastest runners are expected to take 25 minutes to complete the 8.4km course.
The race has been an Auckland mainstay since 1972.
To ensure safety, a number of road closures have been put in place. They are:
· Quay St (between Lower Albert St and The Strand) from 4am until 12pm.
· Tamaki Drive (between Ngapipi Rd and The Strand) from 7am until 12pm.
· Tamaki Drive (between St Heliers Bay Rd and Ngapipi Rd) from 7am until 1.45pm.
· Ngapipi Rd (between Paritai Drive and Tamaki Drive) from 7am until 1.45pm.
· Long Dr (between Tamaki Drive and Melanesia Rd) from 7am until 1.45pm.
· Auckland Rd (between Tamaki Drive and Dingle Rd) from 7am until 1.45pm.
· Hanene St, Kotiri St, Pahaki St, Speight Rd and Aumoe Ave (full length) from 7am until 1.45pm.
· The Parade (between Tamaki Drive and Goldie St) from 7am until 1.45pm.
· Goldie St (between Tamaki Drive and Kaimata St) from 7am until 1.45pm.
· Maheke St (full length) from 7am until 1.45pm.
· Benbow St (between St Heliers Bay Rd and Goldie St) from 7am until 1.45pm.
· Polygon Rd (between St Heliers Bay Rd and Goldie St) from 7am until 1.45pm.
· Long Drive (between Melanesia Rd and Towai St) from 10.30am until 1.45pm.
· Allum St (between Melanesia Rd and Towai St) from 10.30am until 1.45pm.
· Melanesia Rd (between Sage Rd and Auckland Rd) from 10.30am until 1.45pm.
· Auckland Rd (between Long Drive and Dingle Rd) from 7am until 1.45pm.
· Challenger St (full length) from 10.30am until 1.45pm.
· Dingle Rd (between Auckland Rd and The Parade) from 10.30am until 1.45pm.
- RNZ