The 31-year-old comes into this year's Boston Marathon riding a wave of momentum after scratching from last year's race.
The gritty 31-year-old is back to see if she can improve upon her 2011 runner-up finish.
The 31-year-old American will face a tough field in Sunday's Rock ‘n’ Roll Arizona Half Marathon.
The pair leads a strong contingent of runners that will compete in the race's 119th edition on April 20.
The American runner recently finished fifth in the Chicago Marathon, matching her PR of 2:27:03.
Do we really need special diets in order to increase our performance?
The lineup for the October race includes reigning Boston Marathon champion Rita Jeptoo, along with American Amy Hastings.
The 29-year-old discusses her recent American record in Monaco, her future plans and more.
The 2012 Olympian was thrilled to win in front of her home crowd.
The race around Central Park will take place June 14.