First Marathon
Prepare for the ultimate running experience with this comprehensive 12-week plan. From beginner to marathoner in 3 months - build endurance, confidence, and cross the finish line!
Prerequisites
- ✓Have run a half marathon
- ✓6 months minimum regular running
- ✓Available for 4 sessions per week
Export this plan
Add sessions to your calendar or export to your Garmin / Coros watch.
Week-by-week program
35 min easy endurance - 70% MHR
30 min - 70% MHR
5 x (2 min 75% MHR / 2 min rest)
60 min continuous run - 70% MHR (12k)
40 min - 70% MHR
2 x (8 min 78% MHR / 2 min rest)
35 min - 70% MHR
100 min - 70% MHR (20k)
42 min - 70% MHR
5 x (4 min 78% MHR / 2 min rest) - Marathon tempo pace
35 min - 70% MHR
130 min - 70% MHR (26-28k)
40 min - 70% MHR
3 x (6 min 78% MHR / 2 min rest)
30 min - 70% MHR
140 min - 70% MHR (28-32k) - Peak week
35 min - 70% MHR
30 min - 70% MHR with 4 x 1 min strides
Full rest day
100 min - 70% MHR (20k)
25 min - 70% MHR
20 min - 70% MHR
Full rest day
MARATHON 42.2k - Finish your dream!
This plan shows key weeks from the 12-week program. Intermediate weeks follow the same pattern with progressive intensity.
Training tips
- 1.Progress your long run to maximum 32-35k (never 42k in training)
- 2.Train your fueling strategy - CRITICAL for marathons
- 3.Test complete setup (shoes, clothes, gels) on long runs
- 4.Listen to your body - an extra rest day beats injury
Frequently Asked Questions
How long does it take to run a marathon as a beginner?
A beginner marathoner typically finishes in 4h to 5h30. Average pace is 5:45 to 7:45 min/km depending on fitness. What matters is finishing and enjoying the experience. A medal waits at the finish!
Do I really need to run 40+ km during training before the marathon?
No! You never need to run the full 42k. Your longest run should be 32-35k maximum. This is enough to adapt your body to the distance. Building mental confidence matters more than physical distance.
How do I manage nutrition over 42k?
This is THE key to marathons! Consume 30-60g carbs per hour (gels, drinks, energy bars). Start fueling after 45 min. Hydrate regularly but not excessively (500ml/hour). Test your system absolutely on long runs - never test on race day!