42km, eg running from changi run to tuas only see ppl and
building meh? 
they are lots of things to see along the way. Even buildings, how
often do we have the luxury to run on the road(to the dismay of the
drivers), as though it is our grandfather own, and admire the
building architectural! The people, the crowd on the street
cheering you on! The pom-pom gals cheering you on. 
Depend on the location that you run, you can run past woods,
seaside, canyons and all sort of places that you wouldnt notice if
you drive or travel past them. A moment of time, is "freeze" and
you can "see" more things or experience new sensation that you
never know is there. 
running a marathon(public run) does not have a boring moment, with
hundreds of people running with you, you can even chit chat with
them, it is fun and many folks return again from time to time to
relive the moment.
