[3] Hogan attended the University of Oregon,[4] where she studied business administration and competed on the cross country and track and field teams earning 18 All-American honors, 2011 Mile and 3,000 meters NCAA titles.

[5] Her father was a high school basketball star in Pennsylvania, and her mother was a national level swimmer in her native England.

She went to St. Patricks Catholic School, and she ran in the San Luis Distance Club youth program, where she was coached by Jim Barodte.

Normally, the winner of this race would have qualified to represent the U.S. at the 2006 World Junior Championship Track & Field Meet in Beijing, China, but at age 14, Hasay was too young according to the rules of the International Association of Athletics Federations.

Hasay won the 2007 USATF Junior Cross Country Championship race in a time of 21:44 over six kilometers, leading from the beginning and winning by 14 seconds.

She qualified to represent the US at the 2007 World Cross Country Championships in Mombasa, Kenya on March 24, but because of a terrorism warning at the meet, she did not participate.

[10][12] Hasay was selected by Track and Field News magazine as both the best high school miler and two-miler in 2007 (the first girls mile/2-mile double winner since Julia Stamps in 1997), and also the 5th best overall (and top sophomore) girls high school track and field athlete in the United States for 2007.

Hasay won the USATF Cross Country Championships Junior Women's 6K on February 16, 2008 in 20 minutes, 32 seconds at Mission Bay Park in San Diego.

At the 2008 CIF California State Meet on May 31, Hasay held off Davis Senior High School senior Laurynne Chetelat down the home stretch to win her third consecutive 3200 state title in a meet record of 9:52.13, the second fastest 3200 time run by a high school girl ever (only behind Kim Mortensen's National Record) and the first (along with Chetelat) under 10 minutes since Caitlin Chock in 2004.

Hasay's time was also the record for the combined all-time (converted) US high school 1500/1600/mile events, as maintained by Track & Field News.

[14] Hasay closed out her 2008 track season on July 13 in Bydgoszcz, Poland by finishing fourth in the 1500m at the IAAF World Junior Championships in a time of 4:19.02.

On October 23, Track & Field News announced that their voting panel unanimously selected Hasay the 2008 Girls High School Athlete of the Year.

(A third female, Sarah Baxter of Simi Valley High School, has since also won four California state cross country titles.)

Hasay did not disappoint in her Oregon debut, taking sixth at the Bill Dellinger Invitational in 16:39.71 for a 5000m, where she was the top freshman in the race which helped her team to a second-place finish.

She was a key point scorer at her first NCAA Indoor Championships where she placed fourth in the mile and ran the anchor leg on the Ducks' runner-up DMR team.

Hasay's collegiate outdoor debut was a memorable one as she won the featured section of the 1500m at the Stanford Invitational in 4:14.67, which was less than a quarter of a second off her PR, as well as the junior national high school record, that she set at the 2008 Olympic Trials.

She earned her first collegiate cross country victory at the Bill Dellinger Invitational, edging out teammate Alex Kosinski to lead the Ducks to the team title.

She won the Pac-10 individual cross country title, to help the women tie for third in the closest team race in Pac-10 history.

At the NCAA Indoor Championships, she led a 1–3–4 Duck finish in the mile to help Oregon capture its second national consecutive title.

She had a terrific season debut at the Wisconsin Adidas Invitational, where she was the runner-up to defending NCAA Champion Sheila Reid of Villanova.

She covered the 6k LaVerne Gibson Championship Course in 19:41.8, just a step behind Reid who won in one of the closest finishes in NCAA Cross Country history, 0.6 seconds ahead.

Hasay placed seventh overall the Bill Dellinger Invitational with a time of 17:04, where her teammate and best friend, Alexi Pappas, won.

She again won All-American status, making her the first woman in NCAA history to win four cross country All-America awards.

At the 2013 NCAA Women's Indoor Track and Field Championship, Hasay did not run the mile due to starting to focus on the longer distances.

After getting the standard, Hasay set a new personal best while finishing sixth in the 3000 meters at the London Diamond League meet.

Hasay is the second rated 10,000 meter woman (behind Shalane Flanagan) to qualify for 2014 USA Outdoor Track and Field Championships.

[24] Hasay's time is less than 2 seconds from the American Road 10 km record set earlier this June by Molly Huddle.

[25] Hasay earned a silver medal in the two miles race at the USA Indoor Track and Field Championships in Boston with a finish time of 9:44.69.

Although Hasay was scheduled to race in the 10,000 meters at the USA Outdoor Track and Field Championships, she withdrew because of plantar fasciitis and tendinitis in her foot.

She became the fourth American woman to run a half marathon in under 68 minutes after Molly Huddle, Kara Goucher, and Deena Kastor.