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Monday – Friday: 6:30 a.m. – 5 p.m. · Saturday: 8 a.m. – 12 p.m. · Sunday: ClosedMonday – Friday: 6:30 a.m. – 5 p.m.60-minute first visitTrinidad Espino, Physical Therapist · AZ Lic. 000000Ezekiel Ivey, Physical Therapist · AZ Lic. 000000
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  • Trinidad Espino, Physical Therapist · AZ Lic. 000000
  • Ezekiel Ivey, Physical Therapist · AZ Lic. 000000
(928) 555-0104

Running and endurance physical therapy in Flagstaff

Physical therapy for people who run far

Harrier is a two-therapist clinic for distance runners and triathletes. We watch you run, test what is behind it, and build the plan around the training you already do.

A lone runner on an empty desert road at sunrise, a long shadow stretching behind

The running assessment

Your running assessment, in three steps

It happens at the clinic, on a treadmill and a clear floor. Your therapist decides what to test from how you run and what you tell us, and explains each step as it happens.

  1. 01

    Step 1: We watch you run

    You warm up the way you do before a long run, then run on the treadmill in your own shoes. We film from the side and from behind, then slow the video down and look at it with you.

    • Bring the shoes you train in

    • Wear running shorts and a top you can move in

  2. 02

    Step 2: We test what sits behind it

    Strength, range of motion and single-leg control, one side against the other, in the order your running suggests. This is where we find what the video cannot show.

    • Single-leg strength and balance

    • Hip, knee, ankle and foot motion

    • How each leg takes your weight

  3. 03

    Step 3: You leave with a plan

    A written plan for your next stretch of training: what to change, what to keep, what to strengthen and when to come back. What decides how many visits is what we find and what you are training for.

    • Exercises for home or the gym

    • A word with your coach, if you want one

The gait room

Where we watch you run

A treadmill, a camera on each side and a clear floor. It is a way for you and your therapist to look at the same stride, slowed down.

  • A bright room with treadmills along a wall of windows and a large screen at the far end
    The treadmill room
  • Legs in dark trousers and white trainers caught mid-step on a pale floor, a long shadow beside them
    Mid-stride, slowed down
  • A runner's legs in blue and orange shoes mid-stride on a grey road
    The shoes you train in
  • A person in dark trousers lifts a kettlebell from a blue mat, seen from the waist down
    Strength beside the miles
  • Close-up of a runner's legs in yellow shorts on an outdoor court
    Mid-session, legs only
  • A runner passes a splashing fountain in motion blur
    Speed, slowed down
  • A bright rehab gym with exercise machines on raised round platforms
    The strength floor

Training calendar

Where we fit in your training year

Most runners come in at the same few moments. Tell us your race dates and we plan around them, not around ours.

  • Winter base

    Volume goes up slowly. An assessment now shows what to strengthen before the miles arrive.

    Dec to Feb

  • Spring build

    Intensity returns and so do the first aches. We adjust your plan with your coach and keep you moving.

    Mar to May

  • Summer on the trails

    Long days at altitude, downhill and uneven ground. We plan strength work for the load the mountain gives you.

    Jun to Aug

  • Fall road races

    Half and full marathon training. We time strength work and rest around your taper.

    Sep to Nov

Services

Care built around the way you train

Each service starts with the same assessment.

  • Watch the stride, test the body behind it, and leave with a plan.

  • Load the tendon, the calf or the hip in the right amounts, with your running adjusted around it.

  • A step-by-step return after time off, built on what you can do now.

  • Three sports, one body. We look at how the swim, the bike and the run add up.

  • Where state law allows, with a therapist who has the training.

About Harrier

A clinic run by a runner

Trinidad Espino started Harrier because she wanted a place she could send her own training partners. She treats runners who race, runners who just run and triathletes working on the third leg.

Visits are an hour at the start and unhurried after that. You see the same therapist each time, and we tell you how fees work before you book.

A runner silhouetted on a ridge against a bright rising sun

Your therapists

Two physical therapists, one plan

You see the same therapist from your first assessment on.

  • Trinidad Espino, physical therapist and owner, in a black athletic top in a sunlit clinic hallway

    Trinidad Espino

    Physical Therapist and owner

    • Physical Therapist · AZ Lic. 000000

    Trinidad opened Harrier so runners have somewhere that watches them run. She runs the trails above town most mornings and sees distance runners and triathletes at every stage of a season.

  • Ezekiel Ivey, physical therapist, in a grey quarter-zip seated on a treatment table

    Ezekiel Ivey

    Physical Therapist

    • Physical Therapist · AZ Lic. 000000

    Ezekiel works with runners coming back after time off and with triathletes balancing three sports. He plans strength work around the training you already do.

From runners

What runners say

“They filmed me from behind and from the side, then showed me the same stride slowed down. For the first time someone pointed at the thing I had only been able to feel.”

Kiona T.Trail runner

“My plan fit around my race dates. When a long run went badly, I called and we changed the week instead of waiting for the next appointment.”

Jon R.Triathlete

“It was the first time anyone asked what my training week looked like before telling me what to do. The strength work made sense for how I run.”

Reese L.Marathoner

Sample reviews.

Individual experiences vary.

Questions

Before you book

The short answers. The rest are on the questions page.

Do I need a referral?

In Arizona, you can start without a referral. Your plan may still ask for one, and our front desk will tell you before your visit.

Does my plan cover this, and do you take Medicare?

We bill most PPO plans and Medicare. Plans differ in what they cover, so the front desk checks your benefits before your first visit and tells you what to expect.

What if I pay myself?

Then you get a written estimate before your first visit, so you know what care is expected to include. How fees work explains the rest.

How many visits will I need?

We cannot say before we have met you. What decides it: what we find in your assessment, what you are training for, how your body responds and how close your next race is. We tell you at each visit what comes next.

What should I wear and bring?

Running shorts, a top you can move in and the shoes you train in. Bring a second pair if you rotate shoes, a watch export or training log if you keep one, and your plan card.

Do you offer dry needling?

Where state law allows it, a physical therapist who has completed dry needling training can offer it, and Arizona allows it with that training. Ask which of our therapists needles and which course they took. We explain the risks before any needle, and you can say no.

Book your running assessment

Tell us what you are training for and when you can come in. We reply within one working day.

Please don't include medical details in this message. For anything urgent, call us.