
100 Mile Coach
AI Coach for Every Distance
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Free
About
100 Mile Coach is your AI-powered endurance running coach — built to take you from your first mile to your first 100-mile ultramarathon.
Whether you're a complete beginner or an experienced runner chasing your next PR, 100 Mile Coach creates a fully adaptive training plan tailored to your fitness level, schedule, and goals. The plan evolves with you — adjusting in real time based on how you feel, how you slept, and how hard your workouts actually were.
COACH MILES — YOUR AI RUNNING COACH
Get instant answers to your training, fueling, pacing, and race strategy questions from Coach Miles, your personal AI ultra-endurance coach. Available 24/7, Coach Miles knows your plan, your progress, and your goals.
ADAPTIVE TRAINING PLANS
No more generic plans. 100 Mile Coach builds a progressive training schedule based on your current mileage, goal distance, experience level, available days, and preferred terrain. Plans automatically adjust when life gets in the way.
TRAIN FOR ANY DISTANCE
- 5K, 10K, Half Marathon, Marathon
- 50K, 50 Mile, 100K, 100 Mile Ultramarathon
SMART DAILY COACHING
- Log your runs and the AI adapts tomorrow's workout based on your recovery
- Coach Update alerts when your plan changes and why
- Edit any workout before or after your run
- Talk to Coach Miles to change your entire plan
KNOW YOUR ULTRA READINESS
Take the Ultra Readiness Score assessment and find out exactly where you stand and how long it will take to reach your goal distance.
MONTHLY CHALLENGES
Stay motivated with monthly mileage challenges and streak tracking.
Premium subscription includes full adaptive training plans, unlimited Coach Miles chat, and all future features.
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What's New in 100 Mile Coach
1.0.2
August 24, 2026
Coach Miles just got a major upgrade: • Chat in organized conversation threads — start a new chat anytime and revisit past ones • Ask Coach Miles to change a workout and apply the change right from the chat • Guided Workout Mode: follow your workout step by step with spoken cues, even with your phone locked • Coach Updates now show exactly what changed in your plan and why • Share your progress with one tap • Improved subscription management and reliability fixes
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