This just in from the Bank of America Shamrock Shuffle 8K on April 10:
Registration has Closed for the 2011 Shamrock Shuffle 8K
"Open registration for the 2011 Bank of America Shamrock Shuffle 8K has closed upon reaching its 40,000-participant capacity. Entries for this year’s race will no longer be accepted.
The 40,000 registered participants represent the largest field of entrants in the Shamrock Shuffle’s 32-year history. We look forward to seeing you in Grant Park on Sunday, April 10!"