Roisin Willis (born August 6, 2004)[1] is an American middle-distance runner. She won the 800 meters at the 2025 USA Outdoor Track and Field Championships, having previously won gold medals at the 2022 World Under-20 Championships in the women's 800 metres and the 4x400 m relay. 
Willis is a two-time NCAA champion. 
  Personal life
 Her mother is Irish track athlete Breeda Dennehy-Willis, who competed at the 2000 Sydney Olympics. Willis attended Stevens Point High School in Wisconsin.[2] She attended Stanford University, where she participated in cross country and track and field.[3] 
 Career
 Willis was successful as a high-school athlete. She is the U.S. high-school indoor 800 meters record holder. Her outdoor mark of 2:00.78 recorded in 2021 is a U.S. under-18 record.[4] She holds Wisconsin state records in 400 m, 800 m and 1600 m. Willis qualified to run in the 2020 US Olympic trials at Hayward Field in Eugene, Oregon, after running 2:00.78 for the 800 m at the Trials of Miles New York City. At the Olympic trials she reached the semi-finals, finishing 13th.[5] 
She took silver in the 800 m at the 2022 USATF U20 Outdoor Championships,[6] Two months later, she won the event at the World U20 Championships held in Cali, Colombia, breaking the championship record with a personal best of 1:59.13.[7] This was the first time she ran sub-two minutes in an 800 m race.[8] She added gold for the women's 4 x 400 m relay with an official split time of 51.34.[9] 
 Collegiate career
 As a freshman at Stanford, Willis won the 800m in a time of 1:59.93 at the 2023 NCAA Indoor T&F Championships in Albuquerque, NM, setting a personal best, and meet and facility records in the process. She was also a member of the Stanford team that won the distance medley relay.[1][10] That same year at the NCAA Outdoor T&F Championships she finished 4th in the 800m. Following her freshman year, she signed an NIL deal with New Balance prior to competing at the US Track and Field Championships.[11] 
She won the 2025 NCAA Outdoor Championships in Eugene, Oregon, running 1:58.13, a new meeting record, which moved her to third on the all-time NCAA list, behind only Athing Mu and Michaela Rose.[12] 
 USA Champion
 She won the women's 800 metres title at the 2025 USA Outdoor Track and Field Championships, winning her semi-final in 1:58.40 and then triumphing in the final in 1:59.26.[13][14][15] 
 Achievements
 NCAA titles
  References
   - ^ a b "Roisin WILLIS – Athlete Profile". World Athletics. Retrieved September 1, 2022. 
- ^ "Meet the Six High Schoolers Who Have Qualified to Run at the Olympic Trials". Runners World. June 10, 2021. 
- ^ "Roisin Willis' commitment to Stanford caps a year of accomplishments". WSAW.com. November 2021. 
- ^ "Halfmiler Roisin Willis Riding A Hot Streak". Trackandfieldnews.com. 
- ^ "On the rise:Roisin Willis (US High school 800m record holder)". citiusmag.com. 
- ^ "2022 Cross Country Roster". Gostandord.com. 
- ^ "Roisin Willis wins 800-meter gold medal at World Junior Championships". WSAW-TV. 
- ^ "Super Roisin Willis wins World U20 Championships 800m gold medal with 1:59.13CR". World-track.org. August 3, 2022. 
- ^ "Interview:Roisin Willis after winning gold at the world athletics u20 championships 800m". Citiusmag.com. 
- ^ "Phenoms Katelyn Tuohy and Roisin Willis Shine at NCAA Indoors". LetsRun.com. March 11, 2023. Retrieved March 11, 2023. 
- ^ Chavez, Chris (July 3, 2023). "NCAA Champion Roisin Willis Signs New Balance NIL Deal". Citius Mag. Retrieved July 5, 2023. 
- ^ Gault, Jonathan; Johnson, Robert (June 15, 2025). "Doris Lemngole (8:58) & Savannah Sutherland's (52.46) NCAA Records Highlights Women's Final Day". Lets Run. Retrieved June 15, 2025. 
- ^ "Women's 800m Results - USATF Outdoor Championships 2025". Watch Athletics. July 31, 2025. Retrieved August 1, 2025. 
- ^ Monti, David (August 2, 2025). "Quick 800m Semi-Finals At Toyota USATF Championships - RRW". Runnerspace. Retrieved August 2, 2025. 
- ^ Johnson, Weldon (August 4, 2025). "Roisin Willis arrives, Houlihan returns, a brutal weekend for front-runners – Sunday at USATF Championships". Lets Run. Retrieved August 4, 2025. 
  External links
  | 2025 World Athletics Championships Team USA Track & Field | 
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| Women's track and road athletes
 |  Melissa Jefferson-Wooden Women's 100mKayla White Women's 100mAleia Hobbs Women's 100mMelissa Jefferson-Wooden Women's 200mAnavia Battle Women's 200mGabrielle Thomas Women's 200mSydney McLaughlin-Levrone Women's 400mIsabella Whittaker Women's 400mAaliyah Butler Women's 400m Women's 800mMaggi Congdon Women's 800mSage Hurta-Klecker Women's 800mNikki Hiltz Women's 1,500mSinclaire Johnson Women's 1,500mEmily Mackay Women's 1,500mLexy Halladay-Lowry Women's 3,000m SteeplechaseAngelina Napoleon Women's 3,000m SteeplechaseKaylee Mitchell Women's 3,000m SteeplechaseShelby Houlihan Women's 5,000mElise Cranny Women's 5,000mJosette Andrews Women's 5,000mEmily Infeld Women's 10,000mElise Cranny Women's 10,000mTBD- Taylor Roe/Weini Kelati Women's 10,000mLauren Harris Women's 20km Race WalkKatie Burnett Women's 35km Race WalkMiranda Melville Women's 35km Race WalkMaria Michta-Coffey Women's 35km Race WalkJessica McClain Women's MarathonSusanna Sullivan Women's MarathonErika Kemp Women's MarathonMasai Russell Women's 100m HurdlesGrace Stark Women's 100m HurdlesAlaysha Johnson Women's 100m HurdlesDalilah Muhammad Women's 400m HurdlesAnna Cockrell Women's 400m HurdlesJasmine Jones Women's 400m HurdlesTwanisha Terry Women's 4x100m Relay poolTamari Davis Women's 4x100m Relay poolJacious Sears Women's 4x100m Relay poolLynna Irby Jackson Women's 4x400m Relay poolAlexis Holmes Women's 4x400m Relay poolBritton Wilson Women's 4x400m Relay poolQuanera Hayes Mixed 4x400m Relay poolRosey Effiong Mixed 4x400m Relay pool
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| Women's field athletes |  | 
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| Men's track and road athletes
 |  Kenny Bednarek Men's 100mCourtney Lindsey Men's 100mT'Mars McCallum Men's 100mNoah Lyles Men's 100mNoah Lyles Men's 200mKenny Bednarek Men's 200mRobert Gregory Men's 200mCourtney Lindsey Men's 200mJacory Patterson Men's 400mChris Bailey Men's 400mKhaleb McRae Men's 400mDonavan Brazier Men's 800mCooper Lutkenhaus Men's 800mBryce Hoppel Men's 800mJonah Koech Men's 1,500mEthan Strand Men's 1,500mCole Hocker Men's 1,500mKenneth Rooks Men's 3,000m SteeplechaseDaniel Michalski Men's 3,000m SteeplechaseTBD Men's 3,000m SteeplechaseCole Hocker Men's 5,000mGrant Fisher Men's 5,000mNico Young Men's 5,000mNico Young Men's 10,000mGrant Fisher Men's 10,000mGraham Blanks Men's 10,000mClayton Young Men's MarathonCJ Albertson Men's MarathonReed Fischer Men's MarathonJa'Kobe Tharp Men's 110m HurdlesCordell Tinch Men's 110m HurdlesDylan Beard Men's 110m HurdlesGrant Holloway Men's 110m HurdlesRai Benjamin Men's 400m HurdlesCaleb Dean Men's 400m HurdlesChris Robinson Men's 400m HurdlesTrayvon Bromell Men's 4x100m Relay poolChristian Coleman Men's 4x100m Relay poolVernon Norwood Men's 4x400m Relay poolJenoah McKiver Men's 4x400m Relay poolBryce Deadmon Men's 4x400m Relay poolDemarius Smith Mixed 4x400m Relay pool
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| Men's field athletes |  | 
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| Coaches and staff |  Caryl Smith-Gilbert Women’s Head Coach - Sprints/HurdlesKibwe Johnson Men’s Head Coach - ThrowsJillian Camarena-Williams Women’s Assistant Coach - ThrowsKevin Reid 	Men’s Assistant Coach - Multis/JumpsConnie Teaberry 	Women’s Assistant Coach - Multis/JumpsRahn Sheffield 	Men’s Assistant Coach - Sprints/HurdlesMegan Watson 	Women’s Assistant Coach - DistanceChris Lundstrom 	Men’s Assistant Coach - DistanceJess Riden Women’s Head ManagerBlake Boldon Men’s Head ManagerDarryl Woodson  Head Relay CoachDavid Watkins	Event ManagerClif McKenzie Event ManagerChristie-Lee Coad Head ATCBrittany Garcia 	ATCMakini Cruickshank 	ATCHarris Patel 	PT/ATCChris Yee 	LMTKaren Standley 	LMTAsdrubal Lopez 	DCErika Davis 	DCTodd Arnold 	MDChris Jordan 	MDBreigh Jones-Coplin 	Sport Psychologist
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|  1986:  United States (Harris, Princhett, Downing, Vickers)1988:  East Germany (Derr, Fabert, Wöhlk, Breuer, Axmann*, Steinecke*)1990: .svg.png) Australia (Scamps, Poetschka, Hanigan, Andrews)1992:  Romania (Petrea, Florea, Tîrlea, Nedelcu)1994:  United States (Scott, Hennagan, Brown, McMullen, Harrison*)1996:  Germany (Müller, Gesell, Harstick, Urbansky, Marx*, Vollrath*)1998:  Jamaica (Hall, Gayle, Downer, Beckford, Williams*, Simpson*)2000:  Great Britain (Wall, Meadows, Thieme, Miller, Brookes*)2002:  United States (Hardeman, Henderson, Ross, Demus, Richards*)2004:  United States (Anderson, Kidd, Smith, Hastings, Leach*, Lawrence*)2006:  United States (Beard, Cross, Williams, Leach, Young*, Humphrey*)2008:  United States (Whittaker, Beard, Alexander, Jameson, Byrd*)2010:  United States (Dixon, Smith, Roesler, George, Eley-O'Reilly*, Nelson*)2012:  United States (Rucker, Ekpone, Baisden, Spencer, Reynolds*, Porter*)2014:  United States (Little, Baker, Wimbley, Baisden, Majors*, Barnes*)2016:  United States (Irby, Cockrell, Winters, Watson, Waller*, Richardson*)2018:  United States (Mason, Anderson, Madubuike, Manson, Ford*, Minor*)2021:  Nigeria (Oke, Uko, Onojuvwevwo, Ofili)2022:  United States (Kelley, Jackson, Garrett, , Whyte*, Akins*, Wade*)2024:  United States (Mouton, Harris, Donelson, Akins, Doht-Barron*, Kneeshaw*)
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| 1927–1979 Amateur Athletic Union
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| 1980–1992 The Athletics Congress
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| 1993–present USA Track & Field
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| Notes |  OT: 1928, and since 1992, championships incorporated the Olympic Trials in Olympic years, otherwise held as a discrete event.
 2020 OT: The 2020 Olympic Trials were delayed and held in 2021 due to the COVID-19 pandemic.
 Distance:The event was over 880 yards in 1958, 1961–3, 1965–6, 1969–70 and 1973–4
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| Authority control databases: People |  | 
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