One man suffered a heart attack, several others were injured in mishaps during Sunday morning's 16th annual Providence Bridge Pedal.
Portland Fire and Rescue said it answered 20 calls for medical help during the bicycle ride across nearly all the downtown Portland Willamette River bridges.
A firefighter on an all-terrain vehicle was nearby when the man suffered the heart attack and was able to quickly provide aid and CPR. The firefighter also waited with the man's 6-year-old child until Portland police were able to take the child to a family member. The man was taken to Oregon Health and Science University Hospital for treatment.
More than 18,000 bicyclists and others participated in the annual event that raised money for organizations like the Providence Heart and Vascular Institute and the Bicycle Transportation Alliance.
Portland Fire and Rescue had eight fighters patrolling the full 36-mile route (some riders were shorter) providing help and medical aid.
Fire bureau officials said that during the ride American Medical Response took six people to area hospitals, two other them were for serious traumatic injuries and one was for a man who had suffered a heart attack.
Officials have not released names or medical conditions of the people injured in Sunday's ride.