Temuka's James Faulkner completed the two-day Coast to Coast multisport event in 14 hours 57 minutes and 46 seconds on Saturday.
The 16-year-old from Roncalli College was the youngest individual competitor and had hoped to beat his parents' times.
Faulkner beat his mother's best time by 27 minutes but failed to surpass his father's time by 10 minutes. He finished 42nd overall out of more than 100 athletes.
- The Timaru Herald