Samantha, who has not revealed her surname, caught the footage in Downriver Park with her iPhone camera and posted the video on YouTube.
After capturing the mysterious creature, also known as a Sasquatch, on film, her YouTube video has become a hit and has already been viewed almost 8,000 times within four days.
In her post, Samantha said she didn’t realise Bigfoot was there until she replayed her video after the hike at home.
She wrote an email to KXLY news website in the US, and said: ‘Someone asked me in the comments section if I believed in Bigfoot before the video.
‘I have never given it much thought, but now I’m not so sure. Seem real enough to me.