Mo Farah collapsed and was taken away in a wheelchair after finishing second in the New York City half marathon on Sunday.
The double Olympic champion fell awkwardly around the six-mile mark but carried on and finished behind winner Geoffrey Mutai of Kenya in 61mins 8secs.
Farah, 30, was strong enough to pass and hold off third-placed Stephen Sambu from Kenya in a sprint finish, but then fell to the ground minutes after crossing the line and required medical attention.
Farah said: "I feel good. I just tried so hard in the race. It's not a big deal.
"When I fell, I fell pretty hard. I told myself "don't rush" but when I saw the gap, the gap was big.