Personalised trail running training plans built around your fitness, your schedule and your races. Coaching that adapts to your feedback, week after week.
Trailia is an AI-powered trail running coaching platform that creates personalized training plans for trail runners of all levels. From beginners tackling their first 10K trail to ultra runners training for 100-mile races, Trailia uses AI, working inside a published set of training rules, to build science-based training plans adapted to your goals, fitness, and schedule.
What Trailia Does
- Personalized AI Training Plans: A trail-specific training plan tailored to your goal race, schedule, experience level, and terrain, built from your actual Strava, Garmin or Polar history. Plans include running workouts, strength training, and cross-training.
- Adaptive Training: Plans adjust weekly based on your completed workouts, training load, and feedback. Missed a workout? The AI rebalances your week.
- Race Predictions: Fastest, most likely and slowest finish-time estimates for any trail race, from the course elevation profile and your last 12 weeks of training.
- Race Fueling Plans: Segment-by-segment nutrition strategies built around your race course profile and rehearsed in training.
- Injury Prevention and Recovery: AI-generated recovery plans, modified training during recovery, and injury-risk alerts from training-load analysis (ACWR, CTL, TSB).
- AI Coach Chat: A coaching assistant that reads your plan, activities, goals and injury log before answering.
- Device Integration: Automatic activity sync with Garmin Connect, Strava, and Polar Flow; manual FIT, GPX and CSV upload.
- Strength Training: 80+ trail-specific strength exercises with video guidance.
- Google Calendar Sync: Push your training plan directly to your calendar.
- Trailia MCP: Connect your training data to ChatGPT, Claude or Cursor.
Who Is Trailia For
- Trail runners preparing for a specific race (10K to 100-mile ultra)
- Runners transitioning from road to trail
- Athletes who want structured, science-based training without a human coach
- Runners who use Garmin, Strava, or Polar watches
How the Coaching Works
Trailia writes plans with AI, inside coaching rules set by a CONI-recognised Level 1 Trail Running Coach: periodization toward the goal race, load that grows gradually and one channel at a time, regular recovery weeks, vertical and descent trained as their own skills, and a taper sized to the event. Every plan is checked against those principles before it reaches your calendar. The principles and the research behind them are at https://trailia.run/methodology. Who builds Trailia: https://trailia.run/about
Pricing
- Free tier: AI training plan, basic analytics (7 days), 1 active goal, Garmin/Strava/Polar sync, strength library, lactate threshold testing
- Pro (EUR 9.99/month or EUR 79.99/year, 7-day free trial): Unlimited goals and plan regeneration, advanced analytics, AI coach chat, race fueling plans, injury recovery, Google Calendar sync, Trailia MCP, and more
Full details: https://trailia.run/pricing
Free Tools (No Account Required)
- Trail Running Hydration Calculator - ml/hour, total fluid and sodium target for any trail run
- Trail Running Fuelling & Carb Calculator - carbs per hour, calories and gels for any run or ultra
- Trail Pace Calculator - road pace to trail pace with a grade-adjusted pace table
- ITRA Km-Effort Calculator - km-effort, ITRA category and performance band
- Race Pacing & Cutoff Planner - segment-by-segment pacing sheet from a GPX and a goal time
- Trail Race Time Predictor - AI finish-time prediction from a race GPX and a recent result
- Race Readiness Score - a 0-10 readiness score for your next trail race
- Race Report Generator - post-race analysis from FIT + GPX files
- Trail Training Plan Generator - preview a periodized trail training plan
- Trail Finder - find trail running routes near any location
Content
- Trail running guides (training, nutrition, gear, races, recovery): https://trailia.run/guides
- Best trail runners directory (sourced athlete profiles): https://trailia.run/best-trail-runners
- App comparisons (Trailia vs TrainingPeaks, Runna, Strava, Garmin Coach, Vert.run, Kotcha, ChatGPT): https://trailia.run/why-trailia
- Reviews: Kotcha, Runna, Garmin Coach, Vert.run
Links
- Website: https://trailia.run
- About: https://trailia.run/about
- Methodology: https://trailia.run/methodology
- Pricing: https://trailia.run/pricing
- Guides: https://trailia.run/guides
- Free Tools: https://trailia.run/tools
- iOS app: https://apps.apple.com/us/app/trailia-trail-ultra-coach/id6761770841
- Privacy Policy: https://trailia.run/privacy
- Terms of Service: https://trailia.run/terms
- Contact: hello@trailia.run
- Markdown index for AI tools: https://trailia.run/llms.txt (full site: https://trailia.run/llms-full.txt)