Fastest marathon by a type 1 diabetic (male)
- Who
- Nathan Kilcourse
- What
- 2:28:05 hour(s):minute(s):second(s)
- Where
- United Kingdom (York)
- When
- 19 October 2025
Age Restriction: Applications for this record title will only be accepted if the applicant is 16 years of age or over.
The fastest marathon by a type 1 diabetic (male) is 2 hr 28 min 5 sec, and was achieved by Nathan Kilcourse (UK) in York, UK, on 19 October 2025.
Nathan was diagnosed with type 1 diabetes at 19, and running became an effective way to manage the condition. After taking a break from running competitively, Nathan set a goal for himself to achieve this Guinness World Records title. He was able to accomplish it at the Yorkshire Marathon, a race that holds special memories for him.