Billionaire entrepreneur Richard Branson went flying head-first off his bike in the British Virgin Islands.
The Virgin group boss posted a pic of his bloodied face on social media Friday.
Branson, 66, said he thought he was going to die when he crashed.
He suffered a cracked cheek, torn ligaments, and severe cuts.
"My life was literally flashing before my eyes," he wrote. "I really thought I was going to die. I went flying head-first towards the concrete road, but fortunately my shoulder and cheek took the brunt of the impact, and I was wearing a helmet that saved my life."
Branson was training for September's Virgin Strive Challenge, an event in which participants hike, cycle, swim and run from the base of the Matterhorn in the Alps to the summit of Mount Etna in Sicily.
The Associated Press Contributed to this report.