Looking for a marathon ... head towards Richmond, following the River Thames past Syon House, over Richmond Bridge, and up the picturesque Richmond Hill. From there, the route winds along the ...

Looking for a marathon with less big ... Exiting the gardens, runners head towards Richmond, following the River Thames past Syon House, over Richmond Bridge, and up the picturesque Richmond Hill.

Looking for a marathon ... head towards Richmond, following the River Thames past Syon House, over Richmond Bridge, and up the picturesque Richmond Hill. From there, the route winds along the ...