The 81-year-old received a silver medal in Perth last week at the 2016 World Masters Athletics Championships in race walking.
Ms Byers won the medal for the 5km race walk and will take on the 10km and 20km this week.
She said she first got involved in the event in 2009 and had not looked back since.
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READ NOW“I love the outdoors and exercising. I’ve been like that since my high school days,” she said.
“It keeps me young and healthy.”
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Since starting race walking, Ms Byers has won several medals and even holds the WA record for her age group in four events.
“I’m a bit nervous about the 20km. I’m not worried about the time; I would just love to finish and not get disqualified,” she said
Ms Byers said no matter how old you were, it was never too late to try something new.
She said she had refused to sit down and stop living life just because of her age, and was still working as a relief teacher and flying planes as a competitive pilot, taking part in the last six national championships.
She said she did not see any chance of her slowing down.
“I love life,” she said.
“No matter your age, it’s important to keep your mind and body active and healthy.”
She encouraged people of all ages to try race walking.
“It’s about technique and then speed,” she said.
“I’ll continue with it. I love walking and the people are brilliant.”