Why do runners look for a Citgo sign on the Boston course?

Boston Marathon runners are often encouraged to look out for a CITGO gas station sign, which is situated between the 24th and 25th mile markers on the race route. The sign, which is at the top of a hill, is typically visible for several miles before this mark is hit, but once runners pass the sign they are less than two miles away from finishing one of the most notorious organized foot races in the world.

CITGO is a gasoline company, and their corporate logo is a reddish-orange triangle on a white background. The hill upon which this sign is situated is part of the race route, so many runners may feel a sense of relief when they pass the sign.