The CTA Holiday Train kicks off its annual run Friday afternoon from Midway Airport, the CTA said.
The train will depart the airport station at about 3 p.m. and travel on the Orange and Green lines.
On Friday, the train will make one trip from Midway to Harlem/Lake, via downtown, one trip from Harlem/Lake to Cottage Grove and one trip from Cottage Grove to Midway, via downtown, the CTA said.
In the annual tradition, the train is festooned with holiday decorations. There is no extra fare to ride the Holiday Train.