Agents4 Fitness

For trail and ultra runners: Train for the vert, not just the distance.

This trail ultramarathon training plan programs time on your feet, eccentric quad strength for descents, and heavy fueling. Your coach answers questions about your 50K or 100-mile race and moves sessions in chat.

Start Trail Ultra Coach See how it trains you

Trail Ultra Coach is $19.99/mo · cancel anytime · secure checkout by Stripe

training days a week
5
per session
15–120min
meals a day
5
between deloads
3wk
Trail Ultra Coach your coach · online
Today · Tuesday
Vert Session
15–120 min · from your plan
You: A storm is forecast for Saturday. Can I move my long run to Friday?
Your coach: Done. Your long trail run moves to Friday and Saturday becomes a rest day. Lay your trail food out tonight and eat every 30 minutes from minute 30.
Plan updated · confirmed in chat
An example chat. Your coach changes the plan itself and confirms it in the app.
A woman in her thirties wearing a hydration vest runs along a rocky mountain path

The problem

Why road plans fail in the mountains

01

Mileage over climbing

Road plans focus on distance and pace. Out here, you need to hike steep grades efficiently and condition your legs for hours of climbing.

02

Blown quads on descents

Downhill running destroys unprepared muscles. Generic programs skip the eccentric strength work required to survive long drops without your legs locking up.

03

Under-fueling the effort

You cannot run a mountain race on gels alone. If your plan ignores real food and high-volume fueling practice, your stomach will quit before your legs do.

The method

How your coach builds durability

01

Time on feet, not miles

Every run in your plan is set in minutes, not miles, so slow climbs and technical trail count in full. Ask your coach in chat how much time to add as your race gets closer.

RuleEvery run is measured in minutes on your feet

02

Scheduled and reactive step-backs

Fatigue accumulates fast on the trail. The coach drops your volume every third week, or sooner if your heart rate shows you are under-recovering.

RuleResting heart rate up 5bpm triggers a lighter training week

03

High-volume trail fueling

You need constant energy for long mountain efforts. The nutrition plan sets a daily protein target scaled to your bodyweight and spaces your food out.

RulePrograms 5 meals a day to sustain heavy training volume

04

Back-to-back weekend runs

Running on tired legs is the reality of ultra racing. Your schedule groups long efforts to teach your body how to keep moving on day two.

RulePrograms 5 training days a week with specific session durations

Your week

A typical 50K build week

Need a different day? Ask your coach in chat to move any session, this week or every week.

  1. Mon: Foot Care and Mobility(Active)
  2. Tue: Vert Session(Train)
  3. Wed: Durability Strength(Train)
  4. Thu: Easy Trail Run(Train)
  5. Fri: Pack Check and Shakeout Walk(Active)
  6. Sat: Long Trail Run(Train)
  7. Sun: Back-to-Back(Train)

Built to adapt

A plan that moves when your week does.

It reads your recovery

Connect Apple Health or Health Connect. When sleep, HRV or resting heart rate say you are under-recovered, today's session gets lighter. Planned deloads follow your coach's schedule, and you can ask for one in chat.

Chat that changes the plan

Travelling, sore, short on time, missed a meal: tell your coach at any hour. It rebuilds the week or re-portions the day, and confirms the change in chat.

Check-ins it acts on

Daily check-ins and progress photos go to your coach, and your plan is adjusted from what actually happened, not what was scheduled.

Is it for you

Who this coach is built for.

Built for

  • Marathoners stepping up to a first 50K
  • Veterans preparing for 100K or 100 miles
  • Female runners who want iron-aware, fuel-first programming

Pick another coach if

  • Runners who cannot comfortably run 90 minutes yet
  • Anyone looking for a fast 10K or track speed work

Pricing

One coach. One price. No contract.

Create your account, check out with Stripe and answer a one-minute intake. Trail Ultra Coach writes your first plan before you sign in. Month to month; cancel in a tap.

Trail Ultra Coach

$19.99/ month

  • A week-by-week training plan, built from your intake
  • A nutrition plan, with food swaps
  • 24/7 chat that changes the plan, not just answers
  • Apple Health and Health Connect sync
  • Daily check-ins and progress photos
  • Progression and deloads handled for you
Start Trail Ultra Coach

Secure checkout by Stripe · cancel anytime

Questions

Straight answers.

Something else? Ask your coach in chat once you are in. It answers at any hour.

Do I need access to big mountains to use this?

No. Uphill repeats work on any short local incline. With no hills nearby, ask your coach in chat to swap in a treadmill or stair-climber version.

How long are the daily training sessions?

Sessions run 15 to 120 minutes, and the longest is Saturday's long run. Ask your coach in chat to shorten a day when your week is tight.

What happens if my resting heart rate spikes?

The coach reads your Apple Health or Health Connect data. If your resting heart rate jumps by 5bpm, it automatically adjusts your plan to prioritize recovery.

How does the nutrition plan handle long run days?

It switches your daily food structure. You get a pre-run meal, specific hourly fueling practice for the trail, and a recovery meal to replenish after.

What if I have a current injury?

This coach is not for runners with an active stress fracture, tendon injury, or heart condition without clearance from a clinician. Always consult a healthcare provider first.

What do I get for free?

Your account is free — browse coaches, explore the app, and connect with a coach. Each AI coach is a monthly subscription (priced by coach); cancel anytime in a tap.

Is this a real coach or an AI?

It's an AI coach built on a real training methodology for this exact niche. It writes your plans, adjusts them from your check-ins and progress, and answers questions any time — no waiting for office hours.

What if it doesn't fit my situation?

Your plan is built from YOUR intake — goals, schedule, equipment, injuries, preferences. If something doesn't fit, tell your coach in chat and it adjusts. And you can cancel any subscription anytime.

What happens to my data?

Your data stays yours. We never sell it, and you can export or delete your account at any time. See our Privacy Policy for the details.

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