Felicity Aston, 33, tweeted late on Sunday night:
“Congratulations to the 1st female to traverse Antarctica SOLO.V proud.”
AP news agency reported Felicity Aston was also the first person to make the crossing using only her own strength to ski the 1,084 miles (1,744km).
An expedition spokeswoman confirmed Felicity Aston had crossed Antarctica.
Tweeting from her @felicity_aston account, Felicity Aston, from Kent, said she was sitting in her tent waiting for a plane to pick her up.
“I’ve been promised red wine and a hot shower,” Felicity Aston wrote.
Later she added: “Foiled by bad weather yet again! No plane tonight but I have my last Beef and Ale Stew to enjoy for my final evening alone – yum!”
In a podcast, Felicity Aston said her last day had been “amazing”, with an icy eight miles to cross.
“It’s all a little bit overwhelming after days and days of counting the time and the distance to get here. I seem to have got here all of a rush all of a sudden and I don’t really feel prepared for it. I mean it feels amazing to be finished and yet overwhelmingly sad that it’s over at the same time,” Felicity Aston said.
Felicity Aston said her journey had been “an amazing privilege”.
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