Thousands of people are taking part in one of the biggest races in Orlando.

The Insurance Office of America Corporate 5K is a 3.1 mile route that starts at Lake Eola and wraps around the Thornton Park area back to the lake.

This is the 20th year of the event. Some 16,600 runners and walkers are expected, from 800 corporate and non-profit teams.

The goal is to promote health and fitness at work. It's the largest run/walk in Orlando.

The race starts at 7:15 p.m. at Central Boulevard and North Eola Drive.

The following roads are closed during the event:

  • Southbound Eola Drive from Robinson Street to Washington Street
  • Northbound Eola Drive from Robinson Street to Central Boulevard
  • Central Boulevard from Summerlin Avenue to Rosalind Avenue
  • Robinson Street from Rosalind Avenue to Bumby Avenue