When there was a cystic fibrosis bike-a-thon in Warren County 26 years ago, Darren Turner was the only participant.He was 16 years old at the time and showed up on his 10-speed bicycle with $161 in pledged donations to ride for his brother, Jeff, who suffers from cystic fibrosis.“They told me since I was the only one who showed up, I didn’t have to ride, but I rode anyway,” said Darren, who is now 42.Nearly 26 years to the day of that original ride, Darren is organizing another bike-a-thon, only this ride will feature Harleys and Hondas, not bicycles. He is teaming with Rob Wolford to hold a second cystic fibrosis ride with the funds raised to benefit his brother, who is still dealing with the disease.“They say cystic fibrosis usually hits in your lungs or your pancreas,” said Turner. “With my brother, it’s hit both.