Know exactly
how hard to train today
Every morning UltraFlow reads your HRV, sleep, and training load, then tells you exactly what to do — in the context of your race history, injuries, and goals. Every number traces back to your own data, never a guess.
Whether it's your first 50k or you're chasing a podium — if you run ultra, this is for you.
Sample output
Morning Report
Every word is specific to the athlete — their baseline, their phase, their race calendar. The AI knows they finished a 160 km ultra six weeks ago. It adjusts accordingly.
For now reports land in Telegram — nothing to install, works on any phone. It's the MVP delivery: a dedicated UltraFlow app is already in development.
Flagship feature · Spatial analysis · Early access
A plan built for your race
Just upload the route — UltraFlow runs an advanced spatial analysis on it (the kind of GIS work most apps never touch): elevation, gradients, surface, technicality — then shapes your preparation around the route's real demands. Not for "ultra in general." For this race.
Spatial route analysis
Just upload the route — it reads the terrain like a GIS engine: elevation corrected against a digital terrain model (DEM), gradient as a continuous field, surface and technicality (CORINE/OSM), run vs hike sections. It knows what the race demands.
Adapts to your style
Your CP, power zones, how you pace climbs and descents, your race history — the plan bends to how you actually run, not a population average. The longer you use it, the better it fits.
You train for one specific race
Your periodisation adapts to the route's demands — how much vertical, how much descent work — and to your current state. You get a power and pace strategy for race day, segment by segment.
Weather-aware
The race-day forecast folds into the plan: electrolytes and a heat strategy when it's hot, layering and thermal comfort when it's freezing. The mountains turn fast — the plan accounts for it.
The pack on your back. The planner weighs it like no one else.
Carried load costs almost 1:1 — at your weight, 2 kg of spare water is ~2.5% extra energy across the whole race (Martínez-Noguera, 2024). The planner combines your weight, the route profile and the forecast to tell you how much water to carry on each leg — and turns the excess into lost minutes. Mandatory kit stays untouched: it trims only the surplus, never safety.
What's inside
Built for the specifics of ultra
General training apps give you plans. UltraFlow gives you daily decisions — in context of where you actually are.
HRV-driven readiness
7-day rolling average, not daily noise. Alerts only when HRV drops >15% for 3+ consecutive days. No false alarms.
Injury Risk Score
Monotony × Strain ÷ HRV trend. Catches overreaching before you feel it. ITBS volume alert built in.
Post-workout detection
Detects your activity automatically and sends a review shortly after you finish — was the effort right for your phase?
Post-ultra recovery tracking
Knows your connective tissue is still rebuilding 8–16 weeks after a 100-miler. Won't let you pretend otherwise, even when HRV looks good.
Stryd-ready — running power
Running power in watts is the world standard for measuring effort — and in ultra it's a game-changer: on trail, pace lies (a climb, mud, fatigue), watts don't. UltraFlow reads Stryd natively and writes exact power zones into every recommendation — flat, uphill, downhill. Already implemented in the Race Planner.
Subjective data loop
Rate your energy, motivation and soreness each morning (three numbers on Telegram). That morning's report integrates it. When body and mind disagree — the report says so.
Safety first
Ultra is a sport of extreme loads
Job one: get you to the start line healthy
In ultra the limiter is rarely fitness — it's breakdown. Tendons that haven't caught up, creeping overtraining, the day you feel great and do too much. UltraFlow's first job is to stop that — and every signal it uses rests on established sports-science research, not a hunch.
Catches overreaching early
The Injury Risk Score folds training monotony and strain (Foster) with your HRV trend (Plews & Buchheit) into one number — flagging overload days before you feel them, not after.
Respects connective tissue
Tendons and ligaments rebuild for 8–16 weeks after a big ultra (Magnusson & Kjaer) — far slower than HRV recovers. A good HRV reading won't be allowed to talk you into loading tissue that isn't ready.
Manages the load curve
Acute-to-chronic workload kept in the safe 0.80–1.30 window (Gabbett), an alert on sharp volume jumps, and a watch on monotony so one stale stimulus doesn't quietly grind you down.
It's not about training more. It's about training as much as the tissue can take — and not one gram more.
The difference
Ultra runners aren't marathoners with more miles
Connective tissue needs 8–16 weeks after a 160 km race. Fat adaptation takes 14+ days of Z2 to measure. GI distress affects 30–50% of ultra finishers. Generic apps don't know any of this.
morning · post-run · evening
tissue rebuilds post-ultra
threshold (not generic)
the closed beta
Data sources
Connect once
The rest runs itself
Zero manual logging. UltraFlow pulls everything off your watch by itself — HRV, sleep, load, power — then layers on the context no device can give you.
Garmin® Connect
Direct API integration. HRV, sleep phases, training load, Body Battery. Secure OAuth — your credentials never stored in plaintext.
Suunto®
Via Runalyze Personal API token. Full training load history, HRV trend, sleep data normalized to the same format as Garmin users.
Manual .FIT import
No watch? Upload a .FIT file and UltraFlow analyses it. Works with any GPS device that exports standard activity files.
Telegram delivery
Reports land in Telegram — nothing to install, works on any phone. Reply with three numbers for your morning check-in. It's the MVP interface today; a dedicated UltraFlow app is already in development.
Pricing
Less than one gel per week
Ultra runners spend €3,000–8,000 a year on gear, races, and nutrition. €19/month for a tool that prevents injury and guides every training decision is easy math.
- All 3 daily reports
- Post-workout detection
- Evening check-in
- Injury Risk Score
- No card required
- Daily morning report
- Post-workout detection
- Evening check-in loop
- Injury Risk Score
- 90-day history
- Ultra Readiness Score
- Everything in Pro
- 2 months free (vs monthly)
- Priority support
- Early access to new features
- —
- —
14-day free trial. No card required. Early bird pricing for first 50 users.
Who built this
Built by an ultra runner
Tested every morning
"I have all the data. I just needed something that could tell me what it means — in the morning, before coffee."
I'm Tomasz — UESCA-certified ultra coach, firefighter, GIS analyst. I use UltraFlow on my own data every day. I am user #0. The product doesn't ship a feature until it survives a real training week.
Running on data,
not on hope
Beta is free. Testers onboarding now. Garmin and Suunto supported from day one.