Shinbashi = Shimbashi?

Hi,

While planning for my trip I had seen (in Tsukiji page of Japanguide) that the closest JR station to this fish market is "Shinbashi". But when I searched in Hyperdia the name was not present, but there was "Shimbashi". I wonder if these two are the same?

And, is it too far to walk from Tsukiji to this station?

Thank you.

They are one and the same.
It's about 1km from Shinbashi station so not too far at all.

1)
As stations name "Shi(m)bashi" is right.
http://en.wikipedia.org/wiki/Shimbashi_Station
BC station name using special "Hepburn romanization[駅名標ヘボン式]" style.
http://en.wikipedia.org/wiki/Romanization_of_Japanese
So Shi(n)bashi not for using station name
but (n) is also right as "Kunrei-shiki romanization[訓令式]" style.
http://himetorao.aikotoba.jp/roman/station.html
Just one of small trivia :D

[Note] about "google map(.com) ver"
http://goo.gl/maps/OhvVn
Mistypo three stations "Shi(n)bashi" still using wrong without JR(biggest).
Also not "Jr" is wrong Capital letter "J(R)" is right.

2)
google map drag for left
then apper Tsukiji market right side.
http://www.tsukiji.or.jp/english/accessmap.html
http://jpp-k.com/wp/wp-content/uploads/2011/09/8d1a2aff8c179a4c5472cd8...
http://www.tv-bank.com/jp/img/info/access_map_2011.jpg
shimbashi[新橋] Tsukiji market(ichiba/shijo)[築地市場]

Well, to make it very easy:

for most Japanese "n" and "m" are pronounced the same way. So,yes, Shinbashi = Shimbashi!

(Pedantic clarification: "n" and "m" are not pronounced the same in general; rather, "n" is pronounced "m" when it comes before a labial consonant (p or b). Often happens in English too.)