Hey, Runatic!
A study of 1,203 people over 50 with knee osteoarthritis found that self-selected running was not associated with increased pain or worsening X-ray findings over four years.
But runners chose their own exercise rather than being randomly assigned to it. The result cannot become a prescription for everyone with osteoarthritis to run.
An interesting finding, with an important limitation. Research study
One month to Xiamen: January 10. The event lists 35,000 places and just one distance, the full 42.195 km. Event details