From this article:
HOPKINTON, Mass. – The Boston Athletic Association (B.A.A.) will employ a third wave for the start of the 2011 Boston Marathon, creating a more efficient and improved running experience for participants in the 115th edition of the world’s oldest, most prestigious and historic annual marathon. This year’s race will be held on Monday, April 18: Patriots’ Day in the Commonwealth of Massachusetts.
Working in cooperation with the Town of Hopkinton and the Hopkinton Marathon Committee, the B.A.A. will institute three waves of mass participatory starters. Each wave will include approximately 9,000 official entrants, and each wave will be identified by its background bib color in a coordinated, patriotic color scheme: Wave One (red bibs), Wave Two (white bibs) and Wave Three (blue bibs).
The three-wave start will not increase the field size of the 2011 Boston Marathon.
The start times for the 2011 Boston Marathon are as follows:
Category / start time / # of entrants / bib color
Mobility Impaired participants / 9:00am / 6
Wheelchair Division / 9:17am / 30
Handcycles / 9:22am / 24
Professional Women / 9:32am / 50
Professional Men and Wave One / 10:00am / 9,000 / Red
Wave Two / 10:20am / 9,000 / White
Wave Three / 10:40am / 9,000 / Blue
Are you running Boston? What wave? Are you getting excited?