The Habit of Keeping a Running Journal: How Recording Can Improve Training Quality

Introduction

Most elite marathon runners in the world share a common habit: they faithfully record every single training session. When Japanese legendary coach Yoshio Koide mentored his athletes, he required every runner to meticulously log their feelings, pace, weather, sleep quality, and even emotional state. This is not superstition, but a systematic, scientific approach to understanding one’s own body.

For amateur runners in Taiwan, a running diary is equally a powerful tool for improving training quality, preventing injuries, and maintaining motivation. Even if you’re not chasing a BQ (Boston Marathon Qualifier), a substantive running diary can make you a smarter runner.

Choosing the Format for Your Running Diary

Modern runners can choose from various recording methods, each with its own pros and cons:

Many experienced runners adopt a “hybrid” approach: the watch handles objective data, while a paper journal or app captures subjective feelings, with regular (weekly or monthly) reviews to integrate everything.

What to Record in a Running Diary

A valuable running diary is not just “ran X kilometers today,” but a complete record covering multiple dimensions:

Objective Data (usually auto-recorded by the watch):

• Date, time, location
• Distance, duration, pace
• Heart rate (average and maximum)
• Elevation gain
• Cadence and stride length

Subjective Feelings (the part most in need of manual recording):

• Overall feeling rating (1–10, including fatigue and lightness)
• Leg condition (heavy/light)
• Breathing sensation (easy/effortful)
• Emotional state
• Any specific bodily discomfort noticed

External Conditions:

• Weather (temperature, humidity, wind direction)
• Time of run (morning/noon/evening)
• Training type (LSD, tempo run, intervals, recovery run)

Lifestyle Factors:

• Sleep quality and hours from the previous night
• Dietary status (especially before and after long runs)
• Daily stress level
• Time elapsed since the last training session

Reading Patterns from Your Diary

The true value of recording lies in the patterns and insights discovered upon review:

• Identify golden training cycles: Review three months of diary entries to find which weeks felt particularly good, and analyze the common conditions (sleep? diet? training volume?)
• Prevent overtraining: If you record “heavy legs,” “low mood,” and “declining sleep quality” for several consecutive days, your body is sending a warning
• Adjust race strategy: Review training diaries from past race days to analyze the optimal combination of conditions in the week leading up to a race
• Recognize injury warning signs: Many running injuries leave traces in the diary weeks before they occur (e.g., “slight discomfort in the right knee,” “feet feel a bit tight”)

Practical Tips for Building a Recording Habit

Knowing you should record, but feeling too lazy to write after every run—this is the most common dilemma. Here are methods to help build a lasting habit:

1. The three-line principle: After each training session, write at least three lines: “what I ran,” “how I felt,” and “what to watch out for tomorrow.” Don’t aim for completeness, aim for consistency
2. Record immediately after the run: Open the app or journal while cooling down and stretching, while the feelings are still fresh
3. Set a weekly review reminder: Spend 15 minutes every Sunday evening reviewing the week’s entries, writing a summary and next week’s plan
4. Use tags or colors to mark important entries: Mark exceptional runs, first pace breakthroughs, injury days, etc., with special markers so key moments are easy to find
5. Allow imperfection: If a business trip week only yielded two entries, or there are blanks because you didn’t feel like writing, it’s fine—what matters is continuing

Conclusion

A running diary is the most honest conversation between you and your body. It doesn’t criticize you for running slow, doesn’t mock your rest days—it simply records your efforts and struggles, breakthroughs and setbacks, as they are. Looking back at a diary from a year ago, you’ll be amazed at how far you’ve come. This longitudinal self-dialogue is something no external training plan can give you. Pick up a pen, or open an app, and write your first running diary entry today.

Related Reading

• How to Record a Running Log: Using Data Analysis to Improve Training Efficiency
• Building a Road Running Training Log: Methods for Effective Recording to Promote Long-Term Progress
• The Power of a Running Diary: The Psychological Benefits and Methods of Recording Training
• Road Running Training Log Recording: How to Analyze Weekly Reports to Identify Training Blind Spots