Field's Hill is a steep section of the M13 (King Cetshwayo Highway) located in the eThekwini Metropolitan Municipality in KwaZulu-Natal, South Africa.
It forms part of the alternative route connecting Pinetown with the Upper Highway Area and is noted for its steep gradient, challenging driving conditions, and its inclusion on the Comrades Marathon course.
Field's Hill constitutes an approximately 3‑km long ascent on the M13, which serves as a major commuter route between the Durban city centre and the western suburbs.
Prior to the re-routing of the N3 through Mariannhill in the mid‑1980s, Field's Hill was part of the main arterial road used for travel between Durban and inland areas.
In addition to its role in everyday traffic, Field's Hill is a notable feature of the annual Comrades Marathon, where its steep descent is regarded as one of the most challenging sections of the race.