If you're flying, dont forget to keep a good book for company.
There are direct trains but no direct flights for this journey. Bengaluru (Karnataka) to Nashik (Maharashtra) distance is 1046 km and you can get there by flight + train in just over 7 hours and 33 minutes or by train fares starting from ₹ 274.
The weather is amazing right now. You'll have a great time.