@sydney_explained: A rainbow heralds the start of the 55th annual City2Surf fun run. Approximately 90,000 people will take to the 14km fun run between the city and Bondi Beach. The City2Surf is the world’s largest fun run on Sunday #city2surf #city2surf2025 #sydney #ilovesydney #funrun #Running #jogging #rainbow #sydneyevents