Race of delivery boys on tricycles and bicycles in Paris

The video covers a 25-mile tricycle championship with 50 races. Despite cold weather, spectators were engaged. The race dynamics involved competitors rushing to rivals. Mr. Cunha emerged as the winner, completing the circuit in one hour and 30 minutes.

What is the length of the circuit mentioned in the text?

How many races are mentioned in the championship?

What was the weather condition during the event?

Who is the winner of the championship?

What was the time taken by the winner to complete the race?