Serial lactate measures also help assess response to therapy. The half-life of lactate is around 20 minutes, even in septic patients. If the lactate is persistently elevated, it's not because the body can't get rid of it, but because the body continues producing it, shifting to anaerobic metabolism.
That's because the Philadelphia Rock 'n' Roll Half Marathon, which has been run in the city for 38 years, has a new date for 2015, landing on Oct. 31.
That gives you 18.5 miles. (To add on an extra 1.3 (or 2.6) miles or so to this route, start at Locust St. Donut (25th and Locust) , rather than Lloyd Hall). Park at Lloyd Hall, the unofficial beginning of many running routes in Philly. It is the last boathouse (not really a boathouse) if you are coming in to town on Kelly Drive, the first boathouse if you are leaving town. Start running out of town.