Femmina corridore esegue brevi sprint mentre si allena su una pista all'aperto in estate . - Foto e immagini stock

Female runner performs short sprints while working out on an outdoor track in the summer.

Beautiful young woman is jogging in the stadium

Beautiful young woman runner run on a track in early summer afternoon

Young athletic woman preparing to run at the stadium, outdoors. The concept of a healthy lifestyle

Beautiful young woman runner run on a track in early summer afternoon

Athletic woman on running track has side cramps during workout

Beautiful sports woman standing in start position for run on outdoor stadium

Healthy lifestyle. Fitness woman stretching legs before run on outdoors

Athletic girl with flying hair in a black-orange T-shirt with dark pants and gray sneakers runs on the running track at the indoor stadium. She looks forward. Vertical.

Beautiful young woman runner run on a track in early summer afternoon

EUGENE, OR - MAY 1, 2016: Runner approaching the finish line on the track at Hayward Field during the 2016 Eugene Marathon, a Boston qualifying event.

EUGENE, OR - MAY 7, 2017: Runner heads down the river path at mile 10 of the 2017 Eugene Marathon race held on the University of Oregon campus.

EUGENE, OR - MAY 7, 2017: Runner heads down the river path at mile 10 of the 2017 Eugene Marathon race held on the University of Oregon campus.

EUGENE, OR - MAY 1, 2016: Runner approaching the finish line on the track at Hayward Field during the 2016 Eugene Marathon, a Boston qualifying event.

EUGENE, OR - MAY 7, 2017: Runners cross a bridge over the Willamette River at mile 10 of the 2017 Eugene Marathon race held on the University of Oregon campus.

EUGENE, OR - MAY 7, 2017: Official split point for half marathon and full marathon at mile 10 of the 2017 Eugene Marathon race held on the University of Oregon campus.

EUGENE, OR - MAY 7, 2017: Runners cross a bridge over the Willamette River at mile 10 of the 2017 Eugene Marathon race held on the University of Oregon campus.

EUGENE, OR - MAY 7, 2017: Runner Benjamin Mears comes through the tunnel at mile 10 of the 2017 Eugene Marathon race held on the University of Oregon campus.

Official split point for half marathon and full marathon at mile 10 of the 2017 Eugene Marathon race held on the University of Oregon campus.

EUGENE, OR - MAY 7, 2017: Runners cross a bridge over the Willamette River at mile 10 of the 2017 Eugene Marathon race held on the University of Oregon campus.

EUGENE, OR - MAY 7, 2017: Runner heads down the river path at mile 10 of the 2017 Eugene Marathon race held on the University of Oregon campus.

Official split point for half marathon and full marathon at mile 10 of the 2017 Eugene Marathon race held on the University of Oregon campus.