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SALT LAKE CITY — Multiple road closures will affect traffic in the Salt Lake Valley Saturday as the University of Utah Salt Lake City Marathon takes place.

The marathon events begin at 6 a.m. with a bike tour, followed by the marathon and half marathon at 7 a.m., according to the event website. A 5K and 10K run, as well as a 10K skate race, will start between 7:10 and 7:30 a.m.

The marathon course starts on Wasatch Drive on the University of Utah campus and heads west through the Avenues, before going south through Memory Grove Park and back east along South Temple.

From there, it heads south along the east side of Salt Lake City, through Sugar House Park and ending up in downtown Holladay. The course then turns north, following Highland Drive and 600 East and finally ends at Library Square in downtown Salt Lake.

There will be a total of 56 road closures during the marathon events, according to the website. The first closure begins at midnight Friday, and the last street will open back up at 6 p.m. Saturday. Most of the closures will last a few hours.

Salt Lake police officers will allow vehicle traffic to cross the marathon routes at major intersections as race crowds allow, according to the race website. Traffic from the Avenues will be able to cross 11th Avenue at I Street.

Salt Lake City Marathon

Utah Transit Authority will be running extended service on the red and blue TRAX lines for the marathon day.

The first red line train will depart from Daybreak at 4:09 a.m., and trains with direct service to the Medical Center station, which is near the race start point, will run every 20 minutes until 5:49 a.m., according to the marathon website.

The blue line will begin service from the Draper Town Center station at 4:24 a.m., and trains will run direct service to the Medical Center station until 5:46 a.m. There will be no need to transfer on the red or blue line trains if you are heading to Medical Center on Saturday, according to the race website.

For more information and to see the full list of road closures, visit saltlakecitymarathon.com.