This year’s Dasara Festival in Mangalore;’Mangalore Dasara 2014′ will be held on September 25th – October 4th.
Regarding the details of Mangalore Dasara, Please check the below link.
*Official Website of Mangalore Dasara
*Mangalore Dasara on Wikipedia
By the way, the best Dasara festival in Karnataka State, ‘Mysore Dasara’ is very famous.