2011 half marathon map The 3M half marathon is this Sunday, January 30. Streets on the north end of the neighborhood (see map) will be closed from approximately 6am to 9am. The 13.1 mile race starts on Stonelake Blvd and gets underway at 6:40 am. According the 3M half-marathon web site, it is sold out which means approximately 5,750 runners coming through our area. Anderson Ln east of Shoal Creek and Burnet Rd from Northcross Drive down to North Loop will be partially closed during the race. Here is a link to the City's street closure schedule for he event. Residents living along the course have all been notified of the event however you can get the event details here. Plan accordingly.