State Highway 66 (SH 66) is a state highway in Kerala, India that starts in Alappuzha and ends in Thoppumpady. The highway is 44.1 km long. Famous pilgrimage shrines such as Arthunkal, Thumpoly and Kannamali are on this route. Arthunkal- Thumpoly-Kannamaly.
Alappuzha - Thumpoly - Mararikulam - Arthunkal - Thyckkal - Ottamassery - Andhakaranazhy - Pallithodu - Kannamaly - Thoppumpady. Alappuzha -Thumpoly - Arthunkal - Andhakaranazhy - Thoppumpady.