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Monday
Jun 9
2026
Synced
NYC Marathon2026
5 Boroughs · 26.2 Miles
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Days out
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Week
0.0
Miles
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Longest run
Base Building
WK 1 OF 20 · 22MI TARGET
0/22MI
this week
Log
Today
Fuel
Cycle
Training
Music
Coach
Maker
Today'sWorkout
Ready to log
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⚡
Your body is asking for recovery
How did today feel?
Week 1
This Week
Jun 15
135
days to race
This week is aboutHill Power
Race Journey0%
Week 1 of 20— days to go
Weekly Mileage
0.0
miles logged
/ 22
target
Recent Sessions
How are you feeling?
Suggested based on recent activity
How long are you out?
✓ Plan Adapted
＋ Quick LogSearch · pick a meal · add
More · in-run rate · race fuel · quick foods
In-run fuel rate
—g/hr
log a gel or drink during a run
All fuel · gels · chews · drink mixes · candy
✦ Daily Check-In
How are you feeling today?
Mood / Mental State
Body Feel / Soreness
Sport Craving
Notes
How are you feeling?
One tap logs how today felt — or adjust the plan / log details below.
Today's run felt
Need to adjust the plan?
Log more detail
How's recovery?
A quick read on how your body's bouncing back — it shapes how hard tomorrow should be.
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Tap below
Readiness updates as you answer.
Your legs right now
Last night's sleep
Energy today
Add resting heart rate optional
First entry sets your baseline. Later, a jump above it is a fatigue signal.
What shaped this run?
Optional — so your training reads honestly. Private to you, never shared.
Not Tracking
Log period to sync training
My avg cycle length
28days
On hormonal birth control?
Today
Flow
Energy & legs
Sleep
Symptoms
Mood
Birth control
Notes
Cycle × Training Science
▾
Menstrual
Hormones lowest — train by feel, and lean into iron-rich foods this week.
Follicular
Rising estrogen — often a good window for quality work. Effects vary, so let how you feel decide.
Ovulation
Estrogen peaks — you may feel strong. Joint laxity rises a little; mind landings on strength or trail days (steady running isn’t high-risk).
Luteal
Progesterone rises — a given pace can feel harder (that’s physiology). Hydrate more; a few extra carbs help.
On Hormonal Birth Control
Your method suppresses natural phases, so phase timing doesn’t apply — and light or absent bleeding is expected, not a warning sign. Keep logging symptoms and fuelling; those still matter.
Your cycle data is private. It’s stored in your own account, never sold or shared. You can take it with you or remove it anytime.
Training insights
▾
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🦵 Injury Risk
Calculating...
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🏁 Race Readiness
Calculating...
Your pace & heart-rate zones
Race Pace—
Easy Pace—
Easy HR—
Tempo HR—
Race HR—
Max HR Est.—
AI Training Coach
Powered by Claude · Knows your plan, data + cycle
🏆 Race Predictor
Enter a recent 5K, 10K, or half marathon → get your predicted marathon time + recalibrated training zones
→
⚡ Smart Analysis
Quick questions
Coach
Food Name
Servings
1 serving
1
Calories
Protein g
Carbs g
Fat g
Sugar g
Fiber g
Sodium mg
Tap any number to edit manually
Add food
Nutrition diary every logged day, saved
Choose Your Race
Tap any marathon to switch the full theme
Race Predictor
Enter a recent race result. We'll predict your marathon finish and recalibrate your training zones using the Riegel endurance formula.
Hr
Min
:
Sec
Predicted Marathon Finish
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Recalibrated Training Zones
Account
Integrations
Log & Review
Tuesday Jun 16
Easy Run · 4mi
Set Your Race
World Marathon Majors 2026 · 2027
Custom Race Date
The maker
Kristina Lenkowsky
Founder of Feel Fuller · Athlete · Former stage manager
Production management at Oklahoma City University, then years as a stage manager, running the systems that keep a live show on time. I love a system that holds under pressure.
So I built the opposite
Every tool I tried was built to help me eat less. I needed the opposite. Feel Fuller is cycle-aware and fuel-first, for athletes who train hard and deserve to eat like it.
Running NYC for the kids
This year I run the TCS New York City Marathon with Team For Kids, chasing 3:45. They fund free youth running programs across New York, and every mile of this build is for them.
Fast to founder
Running taught me the founder's skill before I needed it: show up, do the work, trust the plan. Feel Fuller is my 2026 passion project, in beta, growing with the people who use it.
The tool she built
A runner who builds her own tools.
Feel Fuller isn't a mockup — it's the live app I use for this build. Even the race bib your crew scans to follow me on race day.
