One of the most prestigious marathons in the country will kick off Sunday morning in Philadelphia as racers from around the world descend upon The City

Traffic delays are expected throughout the city as road closures and parking restrictions begin, lasting through Sunday. Here's a day-by-day breakdown.

Drivers are advised to use alternate routes, avoid areas along the racecourse, allow for extra driving time, and proceed with caution during race weekend. The city is also urging drivers to refrain from double-parking, noting that parking and traffic regulations will be strictly enforced.