Four of the 10 fastest Americans clocked those times in the past 13 months.
The three-time Olympian was among the top qualifiers for the event, but is sidelined with an injury.
At age 42, the three-time Olympian is still in the hunt for her fourth trip to the Games.
Pairs of elites will compete alongside Dallas Marathon participants on Sunday.
At age 42, she runs 2:27:47 to take almost a minute off old mark.
Ten years after winning the race, she'll try to break 2:28:40.
How one Olympic Marathon medalist has inspired the other.
Deena Kastor ties U.S. masters 5K mark at same event in San Jose.
Florence Kiplagat and Tsegaye Kebede top contenders in October 11 race.
She'll try to go sub-2:28:40 on 10th anniversary of her win there.
The Olympic marathon medalist and world record holder will participate in the Runner's World Half Marathon and Festival in October
'Boston' is scheduled for 2016 release.
Pre-race interviews with top Americans Goucher, Keflezighi, Kastor, Vail, and Linden.
Hometown winner and a U.S. masters record are among the prospects.
Her 2:25 goal is well under the U.S. masters record.
