Bangalore and surrounding areas

I'm travelling to Bangalore for work and will be taking 4 days off at the end - does anyone have any recommendations for Bangalore and the area surrounding it?

Bannerghatta National Park - 22km from Bangalore
Channapatna - 60km from Bangalore
Mekedatu 98km - from Bangalore
Ramohalli - 28km from Bangalore
Hesaraghatta - 25km from Bangalore
Shivaganga - 56kms from Bangalore
Shivanasamudram - 22 kms from Bangalore
Devarayanadurga On the Bangalore / Mumbai National Highway near Dobbospet (50km) take a right turn and proceed to devarayanadurga.

Don't forget to visit Mysore......

What is the nearest coast to Bangalore, and would you recommend it?

Would suggest the following circuit route from Bangalore :

Bangalore -
Srirangapattana ( fort, palace, bird sanctuary ) -
Mysore ( palace, museum, art gallery, sandalwood oil factory, Brindavan gardens ) -
Kushalnagar ( Buddhist golden temple, dubare elephant camp ) - Madikeri ( coffee plantations, home stays ) -
drive down sampaje ghats -
Bekal fort and beach near Kasargod, kerala ) or even beach resorts near Mangalore or Udupi -
Drive through Kudremukh National park to Chikmagalur -
Belur and halebid ( heritage temples with stone carvings ) - Bangalore

This way you would cover palaces, museums, temples, forest resorts, beach resorts, ancient heritage temples and much more...

The plan may sound over - ambitious, but trust me, it's worth it.. can be done in 5 days..

Hope this helps...