"surmounted challenges" is correct and can be used in written English.
It means that someone or something has successfully overcome or conquered difficult obstacles or problems. Example: Despite facing numerous obstacles, the team's hard work and determination allowed them to surmount the challenges and achieve their goal of winning the championship.
We created an advisory council made up of teenage girls to assist us in our Girl Up campaign, which helps adolescent girls in developing countries surmount challenges.
The company, which competes against the likes of Cvent, Eventbrite, Amiando and Ticketfly, says that it's managed to surmount challenges specific to Eastern Europe, which gives it an advantage over these others.
There are many reasons given for this assignment but the one I want to highlight here is that knitting a pair of socks (not an easy task!) means figuring things out, managing frustration, and surmounting challenges.
But frogs have surmounted the challenges.
Other girls have surmounted physical challenges.
"I've surmounted these challenges not because I'm strong, but because the alternative means dying.
The two had surmounted several challenges, including a rival bid for NYSE Euronext by Nasdaq OMX and the IntercontinentalExchange, and secured shareholder approval for the deal.
For one so young, she has surmounted many challenges.
Born in 1923 near the capital city of Antananarivo to a poor rural family, Rakoto Frah surmounted the challenges posed by his underprivileged origins to become the most acclaimed 20th century performer of the sodina flute, one of the oldest traditional instruments on the island.
Medicinal chemists have surmounted these challenges with the empirical approach of correlating biochemical measurements with structural biology and cellular measurements, which frequently brings surprises.
Judging from all three, the strong figures, language and action show how Americans embrace and surmount challenges with determination and courage.
