4-Week Cycle-Based Training - Advanced Middle Distance (Laura-Sophie Usinger) is a 4-week triathlon plan. This article combines the actual plan description with a example week from the stored workout entries.
What this plan is built for
This training plan is suitable for all experienced athletes who want to prepare for middle distances, have a natural cycle, and want to align their training accordingly. Cycle-based training is about adapting the training stimuli to the respective physiology of the cycle phases. This way, you can take advantage of your hormonal fluctuations, increasing not only your performance but also your well-being and self-confidence. Win-win :-)
The prerequisite is that you track your cycle and can determine the transition between the 1st and 2nd half of the cycle (follicular and luteal phase) using temperature measurement and/or LH ovulation tests. The training plan is designed for these two halves of the cycle. The first half of the cycle is filled with more intense training, as carbohydrate utilization works best during this phase, recovery is better, and overall there is a high tolerance for stress. With ovulation, the second half of the cycle begins, and the training becomes less intense but more extensive. The reason for this is that carbohydrate utilization is less effective, and you tend to rely more on fats as energy sources.
Note: The training plan starts on day 1 of your period and is based on a cycle length of 28 days. If you have a slightly shorter (25-27 days) or slightly longer cycle (29-35 days), you can adjust the plan as follows: the 2nd half of the cycle lasts 14 days, so a shorter or longer cycle originates from a shorter or longer follicular phase.
Training logic and load
The block has a narrow focus. Its effect comes from concentrated stimuli and deliberately lighter days between them. The important part is not upgrading easy days into hidden hard days. The workout data shows which sessions are structured and which ones are intentionally simple.
The plan contains 24 scheduled entries across 4 weeks. The sequence matters as much as the total hours: hard, technical, or long workouts only work when the surrounding days allow you to absorb them.
Example week: Week 2
This week is not a generic template. It is built from the actual training plan entries, and the workout charts use the stored workout data.
No scheduled workout in this real plan week. Use the day to absorb the load and arrive fresh for the next session.
60 min @ 76%
You should run the training session in the upper LIT zone. Make sure you don't drift into the MIT zone, but run about 5-8 seconds per kilometer faster than you would during your easy sessions.
20 min @ 60% | Ramp from 60% to 85% | 6x 1 min on / 1 min easy | 5 min @ 60% + 4 more steps
Training Goal: Introduction to HIIT training. The aim is to increase your VO2max.
45 min @ 75%
Training goal: Base endurance sessions make up the largest part of triathlon training.
200 m | 6x variable on / 0 min easy | 200 m | 6x variable on / 0 min easy + 6 more steps
200 meters warm-up swim 6*50 meters individual medley combination (combine one stroke for arms with another for legs, e.g., breaststroke arms - freestyle legs) 20 seconds rest 200 meters backstroke 6*50 meters freestyle legs (25 meters at G
2:30 h @ 60%
Training goal: Base endurance sessions make up the largest part of triathlon training.
300 m | 200 m | 4x variable on / 1 min easy | 4x variable on / 0 min easy + 4 more steps
300 m warm-up swim in mixed strokes without butterfly (25 m stroke change) 200 m technical swimming: touch and GA1 in alternation 4 sets of 50 m (25 m diving + 25 m easy swimming) with 30'' rest 4 sets of 50 m with 20'' rest for technique drills: 1.
10 min @ 75% | 8x 1 min on / 1 min easy | 5 min @ 73% | 8x 1 min on / 1 min easy + 4 more steps
Training goal: Introduction to HII training on hills/mountains. The aim is to increase your VO2max.
How to read the workout charts
The chart is based on the workout data: longer segments take more width, higher intensities sit higher, and harder work is marked with stronger colors. For swim or distance-based segments, the graphic represents the planned sequence rather than GPS data.
Practical execution
What to watch
- Execute the key days precisely instead of making the easy sessions faster.
- Use the plan description as context: equipment, fueling, mobility, and realistic threshold values are part of the training.
- When life or fatigue adds pressure, trim secondary work first and keep the most important session stable.
Training effect
Executed well, the plan improves your ability to absorb the intended stimulus repeatedly. Depending on sport and phase, that means more aerobic stability, better pace durability, stronger technique under fatigue, or more confidence at target effort.