The IAAF waterfront course run by thousands , is one of the fastest in the world .
The IAAF waterfront course run by thousands , includes a 1.5 mile stretch across the Tejo River , using the 25th of April Bridge .
The IAAF waterfront course run by thousands , is one of the fastest in the world , and includes a 1.5 mile stretch across the Tejo River , using the 25th of April Bridge .