Definitely Reyna at Sweet VIPS. I've had the pleasure of her and she is definitely fit in a runner/dancer kind of way.
Cassidy and Rylee, neither of whom I have seen (yet!) also look promising at Sweet VIPs.
Natasha at Black Orchid certainly looks the part (another on my list)
there is Carleigh, Lena, & Laya at Black Orchid Victoria & Willow & Blair at Seduction Unlimited. I've been with all of them, they are all very fit & in great shape. They are very friendly & their service is top notch.
oh yeah, there is also Vera. she's an independent, you will find her on Leolist. she also fits what you're looking for. Gymnist fit, very friendly & top notch service. I hope you find what you're looking for.