How long would it take to get to the Great Wall in Beijing from Jinhua and what are the option?

You can go from Jinhua to Beijing by Plane or by train first.
If by plane, it takes about 2h30min, but the price is much higher than by train.
If by train, K102 is available, and it takes about 23hrs.
The most famous parts of the Great Wall are Badaling and Mutianyu. I remember the train to Badaling takes 1h and 20 minutes. For Mutianyu, only coach bus is available for 2.5-3 hours.