Reggie Miller is 57 years old, but the NBA legend is still pushing himself to the limits athletically ... Reg just crushed a 100-mile cycling race that he says absolutely kicked his ass!
"The [SBT GRVL] race Blue course was the hardest race for me to date on a bike, Mother Nature kicked my A$$," Reggie wrote on social media.
The race is ridiculously difficult. Aside from pedaling a bike over 100 miles, the race surface is primarily gravel. To make matters worse, the course isn't flat. No ... there's nearly 7,000 feet in elevation gain.