12/09/2025
Harvard physicist Jenny Hoffman just ran across America, setting a new world record. In November 2023, Dr. Hoffman ran 3,032 miles from San Francisco to New York in 47 days, 12 hours, and 35 minutes officially the fastest crossing of the United States on foot by a woman. That’s more than 63 miles a day, every day, the equivalent of two and a half marathons daily for nearly seven weeks.
She faced 44-mph headwinds in Nebraska, lightning storms in Nevada, freezing nights in the Midwest, and countless hills across the country. A Harvard physics professor studying quantum materials and superconductivity, she balanced teaching, research, and family while preparing for this monumental challenge.
Supported by an all-female crew, she burned roughly 8,000 calories per day, slept only 5–6 hours nightly, and rotated through 11 pairs of shoes. Her data-driven approach and unwavering focus turned the run into a living experiment in endurance, discipline, and human potential.
Dr. Hoffman shattered the previous women’s record by more than seven days, proving that strength of mind can conquer both equations and exhaustion. From the lab to the open highway, Jenny Hoffman showed that science and spirit can run side by side.
