Baby who went on cross-country road trip during mom's maternity leave reaches 50th and final state

Harper Yeats, the baby who embarked on a 4-month road trip across the country, may have just become the youngest member of the All 50 States Club.

On Thursday, Harper, 5 months old, crossed the border of Vermont -- making the Green Mountain State her 50th and final destination.

"We arrived at approximately 4:30 pm ET," mom Cindy Lim wrote to "Good Morning America" in a Facebook message on Oct. 18 after their arrival. "Just feeling really happy and proud that we made it but mainly really lucky that we got to experience this great adventure together as a family."

Lim and her husband, Tristan Yeats, are Australian but live in Canada, where Harper was born. The family started their nationwide tour in June, weeks into Lim's year-long maternity leave.

Lim and Yeats said seeing all 50 states has always been a family goal. Together, the couple has visited 19 states but they started the trip all over again after learning about the All Fifty States Club. They then realized their daughter could be the youngest person to visit all 50.

 

 

 

 

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👋🏼 Hello from Illinois! ••• Thanks for holding off the rain so I could stay dry for my Illinois state sign photo! A big thunderstorm came in right after I got back into the car. I don’t want to jinx myself but I’m really hoping to hit all 50 states without having to take a photo in the rain 😬 ••• Hi, I’m Harper! I’m 5 months old and am on an epic trip around the USA. I’m going to visit all 50 states before the end of the year, which could make me the youngest person to do it. Will you join me for this final part of my journey? ≫ 6 states to go #harper50states // @harper.yeats @uplateblog // #hmsyeats #babyyeats #uplatefamily // #illinois #enjoyillinois #amazingILmoments #onlyinillinois @enjoyillinois @onlyinillinois

A post shared by Harper Yeats (@harper.yeats) on Oct 14, 2018 at 10:15pm PDT

 

 

 

 

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👋🏼 Hello from Nebraska! ••• We had a great time visiting Lincoln NE. Our original plans didn’t have us stopping in Lincoln, but when we found out we were close to another state capital, Mummy insisted we change our route! So that’s now two skyscraper Capitol Buildings we’ve seen (half of all the skyscraper Capitol Buildings in the whole country)! ••• Hi, I’m Harper! I’m 5 months old and am on an epic trip around the USA. I’m going to visit all 50 states before the end of the year, which could make me the youngest person to do it. My mummy was recently interviewed about our adventure. You can read the story on the Wichita Eagle (#linkinbio) and then I hope you’ll click that follow button to join the fun! ≫ 9 states to go #harper50states // @harper.yeats @uplateblog

A post shared by Harper Yeats (@harper.yeats) on Oct 4, 2018 at 8:35am PDT

The family has applied for the Guinness World Record for the youngest child ever to visit every state in the country. Guinness must consider creating the record before Lim submits the evidence on Harper's trip, she said.

After she checked a location off her list, Harper was photographed at each state line.

 

 

 

 

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👋🏼 Hello from Indiana! ••• This was a special state sign photo stop because it was the very first state sign my parents took a photo with when I was still in my mama’s tummy. Even though it’s exactly the same sign, the photo looks totally different because there’s no snow (not even one flake!) and there’s an extra sign about Benjamin Harrison tacked to the bottom! Swipe ← to see the full set of my family’s Indiana state sign photos from January ❄️ and September☀️ this year. ••• Hi, I’m Harper! I’m 5 months old and am on an epic trip around the USA. I’m going to visit all 50 states before the end of the year, which could make me the youngest person to do it. Will you join me for this final part of my journey? ≫ 5 states to go #harper50states // @harper.yeats @tristanyeats @cindytjlim @uplateblog // #hmsyeats #babyyeats #uplatefamily // #indiana #H2Gindiana #onlyinindiana @visitindiana @only_in_indiana

A post shared by Harper Yeats (@harper.yeats) on Oct 16, 2018 at 3:04pm PDT

 

 

 

 

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👋🏼 Hello from Wyoming! ••• Oh Wyoming, you tried to hide your sign from me... but I found you on the other side of the Shoshone National Forest! Thank you for being such a fun state to hang out in - I really enjoyed spending time in Yellowstone National Park, especially getting to see bison, antelope, deer and sheep. I can’t wait to come back when I’m bigger so I can try to spot a bear! ••• Hi, I’m Harper! I’m 21 weeks old and am on an epic trip around the USA. I’m going to visit all 50 states before the end of the year, which could make me the youngest person to do it. Check out my story on the Daily Advertiser (#linkinbio) and then I hope you’ll click that follow button to join my adventure! ≫ 14 states to go #harper50states // @harper.yeats @uplateblog // #hmsyeats #babyyeats #uplatefamily // #wyoming #visitwyoming #thatswy #wyomingonly #findyourpark #yellowstone #yellowstonepledge #visityellowstonepark @visitwyoming @only_in_wyoming @yellowstonenps @nationalparkservice

A post shared by Harper Yeats (@harper.yeats) on Sep 22, 2018 at 1:09am PDT

"Based on the info on the All Fifty States Club, we suspect she is going to be the youngest," Lim said, adding that the youngest person listed is 2 years old.

"The real highlight of the trip is being able to make memories as a family," she added.

To celebrate Harper accomplishing the incredible feat, Lim and Yeats are hosting a meetup at City Hall Park in Burlington, Vermont, at 5:30 p.m. ET Friday.

Story courtesy of ABC News.