Online run coach for all runners + specializing in autoimmune athletes

Whether you're chasing a PR, training for your first race, or managing a health condition like Lupus or Hashimoto's — I'll build a personalized training plan that works with your body and your real life. I am based in Los Angeles and I coach athletes virtually worldwide.

As Seen In:

You’re in the right place if:

  • You want to get faster and stronger, but every generic plan ignores what your body actually needs.

  • You’ve tried to figure it out alone and you’re ready for someone in your corner.

  • You’ve been sidelined by injury, illness, or life, and you’re ready to come back smarter.

  • You’ve been told to slow down, take it easy, or stop running altogether — and you’re not ready to accept that.

  • You’ve felt too complicated for other coaches. Too sick to be an athlete, too athletic to be sick.

What changes when you work with a coach who gets it:

  • You finish races — not just start them. Half marathons, marathons, and distances you weren’t sure were still possible.

  • You build real strength that carries you through training and across finish lines.

  • You stop losing fitness to injuries and setbacks — because your plan accounts for them before they happen.

  • You run more consistently than you ever have, and you actually feel good doing it.

1:1 Run Coaching - Strong Strides System

Every athlete gets a custom training plan built on the Strong Strides System — personalized, periodized, and designed to adapt when life doesn’t go to plan. You’ll also get weekly feedback, strength programming, race strategy, and nutrition guidance from a coach who adjusts when your body or schedule requires it.

Best For:

  • First-time racers building consistency and confidence

  • Runners chasing PRs, BQs, or new distances

  • Autoimmune athletes who need a plan that honors their whole health

  • Anyone who wants expert coaching that actually adapts to real life

The Four Pillars of the Strong Strides System:

  • Pillar 1 — Smart Load Management

    A personalized, periodized training plan matched to your life load — work, family, stress, and schedule. Weekly adjustments keep progress consistent without tipping into overtraining.

  • Pillar 2 — Injury Prevention

    Scheduled checkpoints to spot early warning signs before they become setbacks. When something flags, we adjust fast. You stay moving, not sidelined.

  • Pillar 3 — Strength and Mobility

    Targeted strength and mobility work to bulletproof the weak spots most runners don’t address until they’re already injured. Your mileage builds on a resilient foundation, not a fragile one.

  • Pillar 4 — Fueling and Race-Day Execution

    A dialed-in fueling strategy and race-day plan so you run your race, not your fears. Pacing, nutrition timing, and mental execution — all practiced before it counts.

Pricing:

  • 6 Month Commitment — $250/month ($1,500 total)

  • 12 Month Commitment — $225/month ($2,700 total & you save $540)

Hi, I’m Mireille!

Mireille Sine, run coach and lupus athlete, smiling indoors

I’m a USATF Level 1 Run Coach, 80/20 Endurance Coach, AIP Certified Nutrition Coach, Health Educator, and Speaker with a BS in Exercise Science and an MPH. I’ve been running for 15+ years, completed 14 marathons and 3 ultramarathons, and became the first Black woman to run from Boston to NYC — 200 miles in 11 days.

I also live with Lupus.

I don’t just understand what you’re navigating. I’ve run through it.

My Strong Strides System is built for athletes like YOU!

What athletes Are Saying

"I went from not being able to run a mile without being really out of breath to completing the Rose Bowl Half Marathon and the Los Angeles Marathon. Every week was detailed, easy to follow, and any questions I had were answered right away. Overall, the best investment I have ever made. I feel more powerful, more motivated, and I finally really like running."

— Half Marathon & Marathon Finisher

"After having a baby in August, I wasn't running at all and wasn't sure how to get back into it safely. Just ten months later, I not only completed a marathon but achieved a 20-minute personal record. Mireille understood exactly what my body needed as a new mom getting back into running, and her programming reflected that expertise. I can't recommend her highly enough."

— Half Marathon PR & Marathon PR

"From the very beginning, I have felt supported in my run journey. From being able to do the most to having to pivot when my life changed, you have been there every step of the way. The accountability is necessary for me and really helpful. Overall I would rate this experience a 10/10. I am grateful for the opportunity to work with a coach who was so intentional with me and my life."

— Half Marathon & Marathon Finisher

Questions?

I’ve Got Answers!