Full Breakdown
Jenny Simpson Announces End of Running Career After Cardiac Arrest and Arrhythmogenic Right Ventricular Cardiomyopathy (ARVC) Diagnosis
8/23/2026, 12:16:57 AM
The June 16 Cardiac Emergency
On June 16, former world champion and three-time Olympian Jenny Simpson collapsed while pacing a mile group at a Sir Walter Running pop-up event in Raleigh, North Carolina. Bystanders performed CPR and used an automated external defibrillator until EMS arrived. After transport to UNC Rex Hospital, Simpson suffered a second cardiac arrest, was placed on life support, and was later transferred to Duke Hospital for advanced cardiac care.
Diagnosis and Medical Explanation
Simpson disclosed in an Instagram post that doctors diagnosed her with arrhythmogenic right ventricular cardiomyopathy (ARVC), a rare inherited heart condition. According to the BBC, ARVC is a genetic disorder in which the proteins that normally hold heart-muscle cells together malfunction, leading to fatty and scar tissue replacement, thinning of the heart-wall chambers, and dangerous abnormal rhythms that can cause sudden cardiac death.
Background & Context
Simpson’s competitive career spanned more than a decade. She won the 1,500-meter world title in 2011, earned silver medals at the 2013 and 2017 World Championships, and captured Olympic bronze in Rio 2016—becoming the first American woman to medal in that event. After retiring from elite racing in 2024, she served as chief running officer for retailer Fleet Feet, a role she says will let her stay connected to the sport.
Data & Statistics
- Olympic appearances: 2008, 2012, 2016
- World Championship medals: gold 2011, silver 2013, silver 2017
- U.S. titles: 11 national championships
- Post-retirement role: chief running officer, Fleet Feet
Official Statements & Responses
Simpson’s Instagram update emphasized gratitude and the medical reality of her condition. She wrote that her heart “was severely injured and stunned” and that “my lungs struggled too,” noting that her heart and lungs began functioning independently within days. She asked supporters to avoid expressions of sympathy and instead say they are glad she is still alive.
The Sir Walter Running team posted a statement thanking the medics and confirming that Simpson was receiving “excellent medical care.”
Why It Matters
Simpson’s announcement highlights hidden health risks elite athletes can face, even after retirement. ARVC is a leading cause of sudden cardiac death in seemingly healthy individuals, and her public disclosure raises awareness of the condition among runners and the broader public.
Verbatim Quotes
- “My future is an incredible gift.” — Jenny Simpson
- “Scar tissue within my heart disrupted its electrical system, triggering dangerous heart rhythms that ultimately caused my heart to stop,” — Jenny Simpson
- “You might be wondering what would be the right thing to say to me after an event like this. Please do not say that you're sorry or that you feel bad for me. If it is true in your heart, please tell me you're glad that I'm here. That's how I feel — so glad that I'm still here.” — Jenny Simpson
What’s Next
Simpson indicated that her recovery timeline remains uncertain and that she will continue treatment at Duke Hospital while residing in Colorado. She plans to focus on her role at Fleet Feet, helping others discover the “confidence, connection, purpose, and joy” of running, even as she refrains from running herself.
