Army triathlete Kat Matthews breaks record as she wins Sub8 event in Germany

Army athlete Kat Matthews has become the first woman to finish an Ironman triathlon event in under eight hours.

She finished quicker than 2012 Olympic gold medal winner Nicola Spirig to win the Sub8 event in Germany.

Matthews, who finished as runner-up at the World Championships, overtook Spirig in the final stage of the race to finish on top of the podium.

She recorded an impressive time ofย 7:31:54 - almost half an hour ahead of second-placed Spirig.

After the event, Matthews gave credit to her team's "strength on the sideline" that gave her the motivation to "push on".

The Pho3nix Foundation Sub7-Sub8 event was designed to see if female competitors could beat the eight-hour barrier.

There were also rule changes including drafting being allowed on the bike leg.