For most marathon runners, the challenge is the arduous trek across 42.2 km, but at this year's Venice Marathon there was a whole lot more to deal with.
As Italy is lashed with heavy winds and rain, many parts of Venice saw heavy flooding.
A day after the race, organisers said that around 75 percent of the city had been hit by more than a metre of flooding from the storm, which has killed nine people in Italy.
That didn't stop the 13,000 hardy marathon runners though, who made their way through at times shin deep water to the finish line.
Despite the conditions, Ethiopan Mekuant Gebre won the men's race in a time of two hours and nine minutes and Kenya's Angela Tanui won the women's race in two hours, 26 minutes and nine seconds.