It is twenty minutes on foot from the park.乘火车去公园要20分钟.The station is from the park

The railway station is twenty minutes' by train from the park.
应用twent minutes'，根据句意，还可以说成“从火车站到公园有20分钟的路程”

不行，
可这样改：
It will take (spend)twenty minutes to go to the park from the station
It will take (spend)twenty minutes to the park from the station
t is twenty ninutes' distance on foot from the station to the the park

不对,应该是：It's 20 minutes' train ride from the park to the station
或者：It takes 20 minutes to get to the station from the the park.

The railway station is twenty minutes by train from the park.
乘火车不是 on foot 啊