'hit the stride'

What does 'hit the stride' mean?

Do you mean "hit your stride"?

A person is going for a walk and at first there are "kinks" and the pace is slow. But the more he or she walks, the body limbers up and the walker is easier, more efficient.

From Merriam-Webster online: Stride: b : the most effective natural pace : maximum competence or capability -- often used in the phrase hit one's stride

Examples: She didn't really hit her stride until she was 40 years old. I didn't hit my stride until I'd been working on the project six months.

"Hit one's stride" is synonymous with "Reach one's stride."
SS