8-Week Build Marathon Plan "My First Marathon" is a 8-week running plan. This article combines the actual plan description with a example week from the stored workout entries.
What this plan is built for
You have successfully completed the first 8 weeks and laid the foundation for a successful marathon. In the following 8 weeks, we will work not only on your base endurance but also on your speed.
The goal remains to optimize fat metabolism and additionally train your motor skills with strides while activating the "fast" muscle fibers without producing too much lactate. You have already experienced hill runs. The aim is to improve your performance in shorter distances and enhance your anaerobic capacity. Your "engine" should gain more horsepower. Additionally, there is a high technical stimulus, as you must consciously focus on hip extension and a deliberate push-off during hill runs. We will continue to increase the length of the hill runs, so it is important to keep the risk of injury as low as possible. Therefore, we also recommend preparing the sessions with 5-10 minutes of mobility work.
At the end of this 8-week plan, there will be a small "test race" over 21 km. Here you can check your form and get an initial glimpse of your marathon target time.
Training logic and load
The build phase adds more specific stress while keeping enough easy work to preserve quality week after week. 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 25 scheduled entries across 8 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 8
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.
40 min @ 75%
Calm base run This run primarily serves to optimize fat metabolism. Accordingly, the pace should be more relaxed than intense.
No scheduled workout in this real plan week. Use the day to absorb the load and arrive fresh for the next session.
1 min @ ?% | 1 min @ ?% | 1 min @ ?%
This session is designed to prepare the body for the race on the weekend: After the warm-up, a short running ABC + 2-3 strides.
No scheduled workout in this real plan week. Use the day to absorb the load and arrive fresh for the next session.
15 min @ 65% | 3x 1 min on / 3 min easy
This run is designed to prepare you for tomorrow's competition. Focus on consciously relaxed running with clean technique (high stroke frequency, upper body tension, clean foot placement).
10 min @ 73% | 21097 m
Today's 10km run is the final rehearsal for your A race. So wear the same shoes as you will in 5 weeks and try to fuel yourself the same way before and during the race.
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.