[zenlinux]

I'm an avid cyclist and I can sunburn easily if I don't use sunblock. I would say that surfers are more likely to burn (and do so more quickly) simply because beaches don't have much shade. While riding a bicycle you can often duck into tree shadows during a ride.

Some cyclists do use long-sleeve summer jerseys, but they're in the minority. Short sleeve and sleeveless jerseys are more popular because they are cooler.