Not sure, last year a few people congregated in the small park area north of Giltspur St /opposite the starting line then headed to the corner towards Farringdon Road so that might be a spot to aim for. As @eyebrows already mentioned, it might be busier but not sure what time it picks up
I'll be there for the earlier races. Looking unhip, but in a forum cap for sex appeal.
Is there a lfgss standard loitering zone (@eyebrows mentioned a bit near sainsburys)? I'll head there and hope someone says hi....