The American is part of a fast field that will take part in Sunday's half marathon.
After this weekend's BolderBOULDER 10K, Hall will race the Suja Rock ‘n’ Roll San Diego Half Marathon on June 1.
Bob Babbitt catches up with Ryan Hall following the 2014 Boston Marathon.
Meb Keflezighi earned his victory in the Boston Marathon but he got help from some friends, too.
The 2:04:58 marathoner is looking to bounce back in a big way after a tough two-year stretch.
"[An American win] would be beyond words," says Meb Keflezighi.
Kenyan Moses Mosop, second at Boston in 2011, also announces withdrawal from race.
Spend some time going down. Your legs will thank you.
The injured marathoner believes he'll be back up to speed soon.
Injury has forced Ryan Hall to pull out of the NYC Marathon. Can amateur runners learn anything from his struggles?