Complex sentence: The corridor stretches from Gummidipoondi, 50 km north of Chennai to Maraimalai Nagar 35 km south of Chennai and passes through Tiruvallur, Sriperumbudur and Oragadam.
Split into simpler sentences: The corridor stretches from Gummidipoondi, 50 km north of Chennai to Maraimalai Nagar 35 km south of Chennai. It passes through Tiruvallur, Sriperumbudur and Oragadam.