In short: No time grading in corrals In full: The biggest problem with London is that it is nigh on impossible to gain a place through the ballot. I plan to get 'a good for age' entry to get around this.
If you are lucky enough to get a Ballot place, do not have any ideas of pacing until you get past the first mile, which due to the volume of people you basically end up walking until the field thins out and you can actually start you run. This is enough to ruin most peoples expected times from outset.
That said this will always be a memorable and special race. Date of review: April 11, 2013