Pulmonary hypertension -- a rare lung disorder -- affects people of all ages and ethnic backgrounds. This Sunday, Nov. 1, Stanford University hosts the annual Race against PH, a 5K fun run and walk to raise awareness of the disease and funding for medical research. The race starts at 9 a.m. at Pac 12 Plaza, Galvez St. and Nelson Road. Registration is $15-$35. Go to goo.gl/BcZYaR or call 800-640-9255.