There's more than 480 pounds of determination there.

A likely candidate for the winner.
Full Name: Joseph Tarshes
Age: 18
Birth Year: 1912
Gender: Single (why they have gender listed as single is anyone's guess)
Birth Place: District Of Columbia
Address (in 1930: Washington Washington Dc
Household Role: Son
Marital Status: Single
Possible Relatives:
Rebecca Tarshes
Belle Tarshes
Robert Tarshes
Benjiman Tarshes
Harris Freidenburg

Left to right (deduced from articles in Washington Post and Baltimore Sun):

unknown (in back), L. Bressler (third, Washington), Mabem and Baker (tied for 4th, Baltimore), Joe Tarshes (first place, Washington), Harry Mason (second place, Baltimore)

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Washington Post, September 7, 1924.

Baltimore Athletes Win Playground Meet

Athletes representing the Washington playgrounds came out second best in the first annual intercity meet with Baltimore trackmen at the Central High stadium yesterday afternoon, 129 points to 82. Washington did its best work in the jumping events, grabbing five firsts, three seconds, two thirds and two fourths, but was easily bested in the relay races, not winning a single one. …

The two guys at the ends of the finish line are timers...hand-timers. Responsible for split-second decisions with hand-held watches. Today's electronic camera/timers are so much more fair and accurate. I remember the days of having to determine, 15 meters out, who was going to be 4th and get a time on that runner...just impossible. BTW, we still run the 60-meter dash in indoor (winter)NCAA competition...hot stuff: the runners inhale just before the gun and exhale as they cross the line.