Day 1
Go to Kintamani. You can stay there in a hotel, located in Toyabungkah, at the slope of Gunung Batur. Some of the hotel in Toyabungkah has a submerged facility in a hot water pool, inside the hotel.

Day 2
Early in the morning you can start the trekking to the top of mount Batur to see the beautiful sunrise. After you enjoy the view of the Batur Lake Kintamani, you can go back to Toyabungkah. Before you do that, you can stop by to the place of interest around Batur Lake.

In the afternoon, goes to Besakih or Agung market via Penelokan-Rendang. After that, you can over night there, as your base camp. From Toyabungkah, the trip to those 2 places required about 2 or 3 hours.

Day 3
Early in the morning, you start trekking to the top of mount Agung. If your time is right, you can enjoy a great sunrise right at the top of the highest mountain in Bali. With normal step, you will be back at your base camp in Agung market, or Besakih in the afternoon. From there you can directly goes back to Kuta or antoher place you would like to go, next.

There is another alternative to do some trekking in Bali. You can get the package from a tour travel company to arrange everything you need regarding the trekking. The price is vary, but it should be around USD 200 - USD 300 per person, with minimum 2 persons.

The price is including for the transfer from your hotel in Kuta, Sanur, Nusa Dua or Ubud area. It is also including for porter, guide, entrance fee to the Mount Agung National Park. Another included are trekking tool, sleeping bag, coooking tool, lamps, food and insurance. Other than that, there will be extra charge.