{{about|the runner|the similarly named person|Riley Chamberlin}} {{Short description|American middle-distance runner}} {{Infobox sportsperson | name = Riley Chamberlain | fullname = | image = | image_size = | caption = | birth_date = {{birth date and age|2004|7|21|df=y}} | birth_place = | death_date = | death_place = | residence = | nationality = | spouse = | sport = Athletics | event = Middle-distance running, Long-distance running, Cross country running | club = | worlds = | nationals = | headercolor = | pb ='''800m:''' 1:59.75 (Portland, 2025)<br>''' 1500m:''' 4:02.03 (Los Angeles, 2025)<br>'''Mile:''' 4:20.61 (Boston, 2026) <br>'''3000m:''' 8:40.89 (Seattle, 2025)<br>'''5000m:''' 14:58.97 (Boston, 2025) | show-medals = yes | medaltemplates = }}
'''Riley Chamberlain''' (born 21 July 2004) is an American middle- and long-distance, and cross country runner.<ref>{{cite web|url= https://worldathletics.org/athletes/united-states/riley-chamberlain-14761322 |website=World Athletics|accessdate=7 December 2025|title=Riley Chamberlain }}</ref>
==Biography== From a family of runners, Chamberlain's father competed at the USA Olympic Trials in the steeplechase, as she ran in track and field at high school alongside her sister, Karissa.<ref>{{cite web|url= https://goldcountrymedia.com/news/216483/athlete-of-the-week-riley-chamberlain-grabs-personal-records-in-the-last-two-invitationals/|website=Gold Country Media|accessdate=7 December 2025|title= Athlete of the Week: Riley Chamberlain grabs personal records in the last two invitationals|first=Aaron|last=Jackson|date=May 5, 2022}}</ref> Chamberlain attended Del Oro High School prior to competing at the collegiate level for Brigham Young University. She set a BYU record and became the fourth fastest NCAA all-time in the women’s indoor mile run with a time of 4:33.14 at the 2023 Razorback Invitational.<ref>{{cite web|url= https://goldcountrymedia.com/news/282771/riley-chamberlain-now-setting-records-in-college/|website=Gold Country Media|accessdate=7 December 2025|title= Riley Chamberlain now setting records in college|first= Hayley |last=Repetti|date= Mar 30, 2023}}</ref>
Chamberlain was a member of winning BYU distance medley relay teams at the 2024 and 2025 NCAA Indoor Track and Field Championships.<ref>{{cite web|url= https://www.letsrun.com/news/2025/03/ncaa-womens-track-byu-repeats-in-dmr-thriller-as-doris-lemngole-keeps-winning-day-recap/|website=Lets Run|accessdate=7 December 2025|title= NCAA Women’s Track: BYU Repeats in DMR Thriller as Doris Lemngole Keeps Winning – Day 1 Recap|first1= Jonathan |last1=Gault|first2=Robert |last2=Johnson|date= March 15, 2025}}</ref> In February 2025, Chamberlain had run alongside Carmen Alder, Meghan Hunter, and Tessa Buswell to set a new collegiate best time of 10:37.58 for the event at the Husky Classic, breaking the previous best mark by over six seconds.<ref>{{cite web|url= https://www.runnerspace.com/news.php?news_id=671073|website=Runnerspace|accessdate=7 December 2025|title= BYU Women, Washington Men Run Fastest Indoor DMRs In Collegiate History|date=15 Feb 2025}}</ref>
In July 2025, Chamberlain ran a new personal best of 4:02.23 in the 1500 metres whilst competing at the Sunset Tour in Los Angeles. The following week at the Stumptown Twilight in Portland, Oregon, she won the 800 metres in a personal best time of 1:59.75.<ref>{{cite web|url= https://www.runnerspace.com/gprofile.php?mgroup_id=44531&do=news&news_id=672364|website=Runnerspace|accessdate=7 December 2025|title= RILEY CHAMBERLAIN, THOMAS RATCLIFFE MAKE GOOD USE OF STUMPTOWN TWILIGHT WITH WINS AND PRS|date=20 July 2025}}</ref> She qualified for the final of the 1500 metres at 2025 USA Outdoor Track and Field Championships, before falling in a racing incident involving Helen Schlachtenhaufen, and finished behind the pack.<ref>{{cite web|url= https://www.runnersworld.com/news/a65582503/helen-schlachtenhaufen-fall-us-championships/|website=Runners World|accessdate=7 Dec 2025|title= Helen Schlachtenhaufen Was a Contender for the World Championship Team. A Bloody Fall Dashed Her Hopes|first=Theo|last=Kahler|date=2 August 2025}}</ref><ref>{{cite web|url= https://worldathletics.org/competition/calendar-results/results/7222826?eventId=10229513|date=2 August 2025 |website=World Athletics|accessdate=7 December 2025|title=USA Championships}}</ref>
Chamberlain placed fourth in the individual race at the 2025 NCAA Cross Country Championships in Missouri, helping BYU to a second place finish in the team event.<ref>{{cite web|first1= Krysyan |last1=Edler|first2=Tad |last2=Walch|url=https://www.deseret.com/sports/2025/11/22/byu-women-freshman-jane-hedengren-finish-2nd-cross-country-nationals/ |website=Deseret.com|title= BYU women, Jane Hedengren finish second at NCAA cross country championships|accessdate=7 December 2025|date=22 November 2025}}</ref> On 6 December, she ran 14:58.97 for the 5000 metres in Boston, Massachusetts at the Colyear-Danville Season Opener, finishing runner-up as BYU teammate Jane Hedengren broke the NCAA indoor record.<ref>{{cite web|url= https://www.runnerspace.com/gprofile.php?mgroup_id=44531&do=news&news_id=673740 |title=JOSH HOEY BREAKS INDOOR 600 WORLD RECORD, JANE HEDENGREN CRUSHES COLLEGIATE 5,000 RECORD AT BU|first=David|last=Woods|website=Runnerspace|accessdate=7 Dec 2025|date=7 December 2025}}</ref> On 1 February, Chamberlain moved into the top-ten NCAA all-time list for the 3000 metres indoors with 8:43.16 at the Millrose Games.<ref>{{cite web|url= https://www.dyestat.com/gprofile.php?mgroup_id=44531&do=news&news_id=674116|website=Dyestat|accessdate=5 Feb 2026|title= DORIS LEMNGOLE BREAKS 3000M COLLEGIATE RECORD AT 118TH MILLROSE GAMES|date=2 Feb 2026}}</ref> On 14 February, Chamberlain ran 4:20.61 to set the collegiate indoor mile run record at the 2026 BU Valentine Invitational.<ref>{{cite web|url= https://www.flotrack.org/articles/15437042-riley-chamberlain-sets-ncaa-mile-record-at-bu-valentine-invitational-2026|website=Flotrack|accessdate=14 Feb 2026|date=14 Feb 2026|title= Riley Chamberlain Sets NCAA Mile Record At BU Valentine Invitational 2026|first=Dan|last=Hall}}</ref> On 14 March, she had a top-five finish in the mile run at the 2026 NCAA Indoor Championships.<ref>{{cite web|url= https://www.letsrun.com/news/2026/03/2026-ncaa-indoors-womens-recap-jane-hedengren-completes-sweep-wilma-nielsen-repeats/|website=Lets Run|accessdate=15 March 2026|title= 2026 NCAA indoor women: Jane Hedengren completes sweep, Wilma Nielsen repeats|first=Noah|last=Jampol|date= March 14, 2026}}</ref>
== References == {{reflist}}
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{{DEFAULTSORT:Chamberlain (runner), Riley}} Category:American women middle-distance runners Category:American women long-distance runners Category:BYU Cougars women's track and field athletes Category:BYU Cougars women's cross country runners Category:Track and field athletes from California Category:Living people Category:2004 births Category:21st-century American sportswomen