You can do Mysore sightseeing from Bangalore in 1 to 3 days.
If you have only 1 day, then you can plan to leave as early as possible in the morning (Say 4 am). This will help you reach Mysore quickly avoiding traffic in Bangalore city as well as in the cities on the way to Mysore like, Bidadi, Ramanagar, Chennapatna, Maddur, Mandya and Srirangapatna.
Looking for a Cab Services in Mysore? Mysore Cabs Provides Cab Packages From Multiple Cities to/From Mysore as well as Mysore local Taxi.">
No. 3502, 3rd Main Road, 3rd cross, Tilak Nagar,Mysuru