Hello,
Try Lonavala its will be near by best for solo rider on weekends.
- Distance to Mumbai: 82.8 kilometres
- Attractions: Caves, Waterfalls, Forts, Trekking, Wax Museum
Karnala is full of birds which is 47kms away
Durshet is an adventure spot 76kms away
Khandala is 82km away
Kamshet is a paragliding spot 120kms away
Kalsubai peak 153kms away
Mulshi 165kms away
Dapoli historic spot is 225kms away
Tapola is 260kms away called mini Kashmir.
https://www.tripoto.com/maharashtra/trips/mumbai-weekend-getaways-299244
Kindly check the above Tripoto link for more details.