It’s special to be the first to do something. Zara Lachlan should know. Lachlan just became the first woman (and the second person) to row solo on a 4,100-mile (6,600-kilometer) voyage across the Atlantic Ocean, from Europe to South America. At 21 years old, she’s also the youngest person ever to do this.

Lachlan, who is from the United Kingdom, set out from the European nation of Portugal in October in a rowboat with only a tiny indoor area for sleeping. She arrived in French Guiana, a country in South America, on February 1 after 97 days alone at sea.

“[It] feels very strange to be back on land,” she told the BBC.

An ocean isn’t an easy thing to cross, especially in a rowboat. Lachlan had to row for up to 21 hours a day, which was especially hard when she was rowing the boat against the wind. During her journey, she encountered unforgiving weather that caused her boat to roll upside down. She also broke her finger, as well as some of her equipment.

“Every day for the first month I wanted to go home, and I thought this was a silly idea and it was so hard,” Lachlan told the BBC. “But I know for a fact that if someone came up to me on a boat and said they would tow me in and I could fly home, I would tell them to go away.”