Rock ‘n’ Roll Marathon’s 5K set for Saturday

The first race of Rock ‘n’ Roll Las Vegas Marathon weekend will begin at 6 p.m. Saturday with a 5K at the Las Vegas Festival Grounds with live music before, during and after the race.

This is the third year of the 5K, and event officials are expecting about 9,500 participants. As of Thursday, about 9,300 had signed up.

Registration will close at 4 p.m. Saturday or whenever it sells out.

Two years ago, there were about 5,000 racers and last year about 8,000. About 5,300 are participating in the remix challenge, meaning they will run again Sunday in either the marathon, half marathon or 10K.

More than 45,000 runners are expected to participate in the four races, with about a combined 30,500 in the marathon and half marathon on Sunday.

Contact Betsy Helfand at bhelfand@reviewjournal.com. Follow @BetsyHelfand on Twitter.