# RunLetters

> RunLetters is a half marathon training brand run by Caroline Claassen (13 half marathons run, 1:23:45 PB, UESCA Certified Running Coach). It publishes a weekly running newsletter, a run club, and a half marathon coaching program, plus a free hub of half marathon training tools and guides.

## Coaching
- [Half Marathon Coaching Program](https://hm-coaching.runletters.com): Real coach (not an app or algorithm) for half marathon training. $35/month or $95/quarter. Includes a personalized plan that adjusts as training goes, live group sessions twice a week for strength and mobility, direct coach access via messaging and forum responses, and monthly webinars on nutrition, pacing, and mindset. Not 1:1 coaching. 7-day free trial, no contract.
- [Meet Caroline: Online Running Coach](https://runletters.com/training/online-running-coach/): Caroline's background, coaching philosophy, and why she coaches only the half marathon distance.

## Free training tools
- [Half Marathon Pace Calculator](https://runletters.com/training/tools/pace-calculator/): goal time to per-km/mile splits and pace chart.
- [Running Pace Chart](https://runletters.com/training/tools/pace-chart/): pace per km/mile to finish times across every common race distance, 1K to marathon.
- [Race Time Predictor](https://runletters.com/training/tools/race-time-predictor/): predicts half marathon finish time from a recent 5K or 10K result.
- [Heart Rate Zone Calculator](https://runletters.com/training/tools/heart-rate-zone-calculator/): age and resting heart rate to 5 running training zones.
- [Pace Converter](https://runletters.com/training/tools/pace-converter/): live min/mile to min/km conversion as you type, plus a full reference chart.
- [Half Marathon Taper Planner](https://runletters.com/training/tools/taper-planner/): generates a week-by-week taper schedule from a race date.

## Guides
- [Half Marathon Training Plan for Beginners](https://runletters.com/training/guides/half-marathon-training-plan-beginners/)
- [Couch to Half Marathon](https://runletters.com/training/guides/couch-to-half-marathon/)
- [12-Week Half Marathon Training Plan](https://runletters.com/training/guides/12-week-half-marathon-training-plan/)
- [8-Week Half Marathon Training Plan](https://runletters.com/training/guides/8-week-half-marathon-training-plan/)
- [16-Week Half Marathon Training Plan](https://runletters.com/training/guides/16-week-half-marathon-training-plan/)
- [How to Run a Sub-2-Hour Half Marathon](https://runletters.com/training/guides/sub-2-hour-half-marathon/)
- [Half Marathon Nutrition & Fueling Guide](https://runletters.com/training/guides/half-marathon-nutrition-fueling/)
- [Half Marathon Taper Guide](https://runletters.com/training/guides/half-marathon-taper-guide/)
- [Half Marathon Pace Chart, Explained](https://runletters.com/training/guides/half-marathon-pace-chart-explained/)

## Coach vs. app
- [Running Coach vs. Training App](https://runletters.com/training/guides/running-coach-vs-training-app/): Direct breakdown of what a running coach and a training app each actually do, and who each is right for.
- [Runna Alternative](https://runletters.com/training/guides/runna-alternative/): Named comparison of RunLetters Half Marathon Coaching against the Runna app.

## Race guides
- [Race Guides Directory](https://runletters.com/training/guides/race-guides/)
- [The RunLetters Half Marathon Guide](https://halfmarathon.runletters.com/)
- [Valencia Half Marathon Guide](https://valencia.runletters.com/)
- [Copenhagen Half Marathon Guide](https://cph.runletters.com/)
- [Cardiff Half Marathon Guide](https://cardiffhalf.runletters.com/)
- [EDP Lisbon Half Marathon Guide](https://runletters-lisbon-guide.netlify.app)
- [BMW Berlin-Halbmarathon Guide](https://runletters-berlin-guide.netlify.app)