London - British track cyclist Laura Trott capped a gruelling women's omnium campaign to be crowned Olympic champion in the inaugural edition of the event at the velodrome Tuesday.
Trott finished just one point ahead of American Sarah Hammer, who took the silver, with Australian Annette Edmondson taking the bronze.
Trott, the world champion in the six-discipline event, thus takes her second gold medal of the Games having helped Britain's three-woman pursuit team win gold over 3 km last week.
The 20-year-old Englishwoman was consistent throughout her omnium campaign finishing only once outside the top three when she placed 10th in the points race on Monday.
She was first in the flying lap, won the elimination race, finished second in the individual pursuit, was third in the scratch and sealed victory by topping the times in the final event, the 500m time trial.
Trott's gold was Britain's their sixth medal from eight finals at the Olympic velodrome.
The competition ended later with the women's sprint final and men's keirin.