2014 Kona underpants run

They aimed at a Guinness Book of Records entry as the largest assemblage of folks wearing underpants taking part in a public run; word is they fell 40 short and will have to come back next year.

E3 Tri Team

IM Kona 2015 - Underpants Run

Kona Underpants Run 2022 - Trimexico

Over 1,500 Participate in Annual IRONMAN UnderPants Run – Hawaii

2015 Kona Underpants Run – Triathlete

Underpants Run Kona Gallery – Triathlete

What lies beneath: Underpants Run draws a crowd - West Hawaii Today

2013 Kona Underpants Run

IM Kona '16: Day 9

2014 Kona Underpants Run – Triathlete

2014 Nanjing Youth Olympic Games: Boys' Race – Triathlete

If it’s Thursday in Kona, it’s the Underpants Run!

Best running underwear for men - 220 Triathlon

Undie Run - Wikipedia

Vibe 3-Pack Men's Boxer Brief - Black/Grey/Navy

Triathletes shed clothes for underpants run pre-Ironman World

Runderwear Men's Running Boxers (Pack of 2) - Chafe-Free Running