My gut reaction to your question was to answer "by train". Another option might (considering it's in Norfolk), by canal.
Then I thought I'd better look it up.
The comment in the article was about Berney Arms[1]. Looking on the map, it looks like the station is indeed unserved by roads. However, the nearest road does appear to be 500 metres away (much closer than three miles). The pub and windmill are on that road, rather than at the roadless station.
The next junction along that road is about 2km away (still not 3 miles), and the nearest meaningful junction (i.e. that gives you a choice of destination) 3.5km (still not 3 miles).
The nearest junction with an A road is about 3 miles away, following the road. It is also the closest you can get with Google Streetview[2]
Then I thought I'd better look it up.
The comment in the article was about Berney Arms[1]. Looking on the map, it looks like the station is indeed unserved by roads. However, the nearest road does appear to be 500 metres away (much closer than three miles). The pub and windmill are on that road, rather than at the roadless station.
The next junction along that road is about 2km away (still not 3 miles), and the nearest meaningful junction (i.e. that gives you a choice of destination) 3.5km (still not 3 miles).
The nearest junction with an A road is about 3 miles away, following the road. It is also the closest you can get with Google Streetview[2]
[1] https://www.google.co.uk/maps/place/Berney+Arms,+Great+Yarmo...
[2]https://www.google.co.uk/maps/@52.621769,1.651184,3a,75y,187...