Friday by Robert Heinlein

One of my favorite science fiction books featuring a strong female lead is Friday, by Robert Heinlein. Published in 1982, the book describes the adventures of a genetically-engineered superwoman living in a world of mere mortals.

Blessed with gifts of incredible strength, speed, stamina, intelligence, beauty and libido, the title character struggles with her alienation from the rest of mankind. Few can match her in any one characteristic, no one can match her breadth of ability.

The Wikipedia contributor who wrote the entry for Friday has indicated the book is among the most skillfully rendered of Heinlein's many novels. I think that's probably correct.

Many if not most of of Heinlein's books contain female characters who are more capable than the males, and Heinlein was famous as admirer of athletic women.