Cassandra Beaugrand swam in the Seine, which was finally declared safe, before cycling and running on the Champs-Élysées boulevard to Olympic triathlon gold in front of a huge and ecstatic French home crowd on Wednesday. World ranking leader Beaugrand shook off days of uncertainty around the races due to water quality issues when she broke a four-strong leader group in the final stages. She crossed the line at Alexandre III bridge six seconds ahead of Swiss Julie Derron. World champion Beth Potter got bronze for Britain while the second French athlete, Emma Lombardi, missed out in fourth. The …