Kenya's Eliud Kipchoge successfully defended his men's marathon title and the United States added three more golds to their tally on the final day of Tokyo Olympics action.

Kipchoge crossed the line one minute and 20 seconds ahead of runner-up Abdi Nageeye to become the third athlete to win the event at back-to-back Games.

In doing so, the 36-year-old – who previously took 5,000 metre silver in 2008 and bronze in London four years later – believes he has inspired a generation of runners.

"It means a lot to me, especially at this hard time," he said. "Last year was postponed, and now it has happened.

"I think I fulfilled the legacy by winning the marathon for the second time. That's my total happiness, my inspiration for the next generation."

The final day of action at the 2020 Games ultimately belonged to the United States, though, as they collected three golds to finish above China at the top of the medal table.

USA TRUMP CHINA

Team USA trailed China by two gold medals heading into Sunday's events, but triumphs in basketball, volleyball and track cycling saw them top the standings.

USA's victory in the women's basketball would have come as little surprise given it is their seventh straight success in the competition.

Brittney Griner racked up 30 points and Breanna Stewart also impressed in the 90-75 win over Japan with 14 points, 14 rebounds, five assists, four steals and three blocks.

Sue Bird and Diana Taurasi each picked up their fifth gold medals, while for Japan the silver was their first medal of any sort in the sport.

"The only thing about getting older, you know all the bad stuff that can happen," Bird said. "We lost in the 2006 World Cup. We tasted that and that's always been the driver. 

"So, when we actually have the medal around our necks, it just feels so good. It's a sense of relief in a lot of ways."

While success in the women's basketball is par for the course, overcoming Brazil in the volleyball final provided USA with their first gold medal in the event.

After finishing runners-up to Brazil in the 2008 and 2012 Games, USA exacted some revenge with a 25-21 25-20 25-14 victory in Sunday's final.

Jennifer Valente completed the hat-trick for the Americans in the women's cycling omnium, the 26-year-old delivering her country's first track cycling gold since 2000.

She led from start to finish, despite crashing in the final points race, with home favourite Yumi Kajihara taking silver.

"There were some bumps. It was actually quite a short day as far as omnium goes," Valente said. "That was something that was very much on my mind, that we played into.

"Crashing in the point races is never ideal. I was just trying to get back on my bike, make sure I was okay, and get back in the race as soon as possible."

BRITAIN RULE THE TRACK

Kelsey Mitchell won the women's sprint for Canada by beating Ukraine's Olena Starikova 2-0 in the best-of-three final.

But it was a familiar outcome in the men's keirin as Jason Kenny finished 0.763 seconds ahead of Azizulhasni Awang of Malaysia to win his seventh Olympic gold medal.

That makes Kenny Great Britain's most decorated Olympian and ensured Team GB finished top of the cycling medals table with six golds, four silver and two bronze.

"It's a bit of shock, I think," Kenny said of his latest medal success. "I really wanted to cross the finish line. I am absolutely buzzing. 

"Going into the final I didn't expect anything other than a five, really. I was hoping to kind of get stuck in, and hopefully come away with some silverware. 

"To win at the corner on my own like that is absolutely buzzing."

AMERICA'S BOXING WAIT GOES ON

The final four boxing gold medals were up for grabs on Sunday and plenty of focus was on the super-heavyweight bout between Bakhodir Jalolov and the USA's Richard Torrez. 

Twenty-two-year-old Torrez started strongly with a ferocious assault in the first round, but Uzbekistani boxer Jalolov recovered and won unanimously.

Torrez's compatriot Keyshawn Davis earlier lost his men's lightweight clash with Cuba's Andy Cruz, meaning USA's wait for an Olympic men's boxing gold will reach 20 years come Paris 2024.

"I've never felt this much pressure in fights a day in my life," Davis said. "I'm glad I got to experience this because it did make me a better fighter.

"I'm not cool with winning silver, but it's something I've got to live with and I'm okay with that. I'm gonna live with it and we're just gonna take it to the next level."

In the female categories, Kellie Anne Harrington beat Brazil's Beatriz Ferreira in the lightweight final to earn Ireland their second gold of the Games, while GB's Lauren Price outclassed Li Qian to win the middleweight final on points.