Hello Dipesh, With so many places to visit near Mumbai, you can surely gear up and head out for a bike trip. Here are a few suggestions for you :
1) Mumbai to Lonavala - Distance: 83.3 kilometres, 2 hours.
2) Mumbai to Igatpuri - Distance: 121 kilometres, 3 hours.
3) Mumbai to Malshej Ghat - Distance: 127 kilometres, 3.5 hours.
4) Mumbai to Karnala Fort - Distance: 50 kilometres, 1.5 hours. And of course, you have other common options like Mahabaleshwar, Khandala, Alibaug, or Goa!