Three sports that I know of at one time allowed women to compete against men. Sailing at one time had several events open to men and women but in recent years has created separate events . Likewise shooting used to be open but they too have created separate events. Equestrian is the only current sport open to both sexes. Both shooting and equestrian have had women win gold medals competing against men. In the Winter Games the rules for luge allow for the doubles event to have women compete but I don't think this has happened as of yet.
it hasn't been done yet in the British Olympics but i think its 4 in the pentathlon events
BMX racing and open water swimming made its debut in 2008 Women's boxing will debut in 2012 Golf and Rugby Sevens will be added in 2016.
The 1900 Olympics were the first modern Olympic Games to be open to women.
There were nine new events under existing sports that were competed for the first time: 1) Cycling - new events for men's and women's individual BMX. 2) Swimming - new events for men's and women's 10 km open water swim (called the marathon). 3) Athletics - new event for women's 3000 meter steeplechase. 4) Fencing - new events for women's team foil and women's team Sabre replaced men's team foil and women's team epee. 5) Table Tennis - new events for women's team and men's team replaced women's doubles and men's doubles.
Overall, 9 new events were held, which included 2 from the new cycling discipline of BMX. Women competed in the 3000 m steeplechase for the first time. In addition, marathon open water swimming events for men and women, over the distance of 10 kilometres, were added to the swimming discipline. Team events (men and women) in table tennis replaced the doubles events. In fencing, women's team foil and women's team Sabre replaced men's team foil and women's team épée.
Ski Jumping, Four man Bobsleigh, Doubles Luge
football/ soccer football/ soccer