The nearest trekking spot from Hyderabad would be Ananthagiri Hills.....located at a distance of 80kms...You have buses plying to Vikarabad, 6kms from Ananthagiri Hills from MGBS, Hyderabad's Central Bus station... You have trains between Hyderabad and Vikarabad... From Vikarabad, you will have shared taxis to Ananthagiri Hills....