The simple answer to that it The London Marathon
That's the main reason why I started running more...and I ran 5 London marathons in the 80's, including the 2nd ever. Obviously it was much smaller back then but it was still a major experience.
I gave up running in about 87/88 basically coz I blew up... ran too much, ran through injury, ran at all hours of night and day etc etc
I started again about 4 years ago but don't run like I used to...much more sensible 20 years on
