Sendamangalam is located at . It has an average elevation of 240 metres (715 feet). It is close to Kolli Hills (கொல்லி மலை) - which is part of the Eastern Ghats. The closest river is Kaveri. The city is approximately 350 km southwest of Chennai, 255 km south of Bangalore, 50 km south of Salem and 93 km northwest of Tiruchirapalli (Trichy) and around 200 km North of Madurai.