Runner’s World half marathon and running festival will be held Oct. 17 and 18.

The race courses will include most of the Northside downtown area and the Southside.

Traffic in those areas will be restricted as of half an hour prior to the start of the race. Several houses of worship have changed or canceled services. Check with the individual locations for more information.

For maps and festival information, visit http://rw.runnersworld.com/rwhalf/about.htm.