Hi, how far is Big Buddha from Hong Kong Disney? can i visit both in one day?

The distance is about 20 miles (35 kilometers). Taxi + Cable car is the best choice for you. From Disneyland, you can take a taxi to get to Tung Chung Station. Then take the cable car to arrive at the Big Buddha.

Personally, a full day is enough to cover the two spots and the best route is Buddha - Disneyland (it closes around 21:00).