Oldest person to complete the IRONMAN® 140.6 World Championship (female)
- Who
- Natalie Grabow
- What
- 80:69 year(s):day(s)
- Where
- United States
- When
- 11 October 2025
The oldest person to complete the IRONMAN® 140.6 World Championship (female) is Natalie Grabow (USA, b. 3 August 1945), at the age of 80 years and 69 days, in Kailua‑Kona, Hawaii, USA, on 11 October 2025.
Natalie finished in 16 hours, 45 minutes, and 26 seconds.
She did not start competing in triathlon events until her 60s!