In order to follow this plan, you must have already completed a marathon or a trail run of less than 41km.
This 4 training sessions per week plan is organised into 3 cycles of 3 weeks, with one easing off week between each cycle and another before the trail run itself.
Ideally, your sessions will be on Tuesday, Thursday, Saturday and Sunday in order to ensure an optimum spread throughout the week but also to ensure you will be able to rack up the kilometres over a short period.
I can't guarantee that you will manage to run your entire trail, but this plan should help you to finish it without any mishaps.
Try to run outdoors as much as possible, alternating between surfaces.
You will thus get used to unstable terrain and strengthen your muscles naturally.
You will need to keep hydrated on long runs, taking at least a mouthful every 20 minutes. There are various drink-carrying solutions available: hand-held bottle, flexible bottles in the shorts, bottle-holder running belts or water bladders.
Your session will be a 3h30 mix of trail walking (on slopes) and gentle running (on the flat and on descents).
If you have no slope whatsoever, do 5 minutes of power walking every 30 minutes to get used to switching from running to walking and vice versa.
You will really ease off on training this week to recover from your efforts during the first cycle.
If you decide to invest in a pair of trail running shoes (which is highly recommended for greater grip and protection), it is high time you broke them in!
As you string together your training sessions and the physical exertion required, you may start to get a little tired.
Look after yourself. Put on dry clothes after running, follow our nutritional advice, pay attention to personal hygiene and all will be well!
As much as you can, try to do your running/hiking mix on terrain similar to that of the actual race. Take this opportunity to test your equipment and your feeding regime.
You will really ease off on training this week to recover from your efforts during the first cycle.
If you decide to invest in some new equipment (socks, bag, fabric, etc.), this is your last chance to test them!
The big day is getting closer. It's too late to do huge sessions or overly intensive work which you will be unable to assimilate before the race.
Penultimate week of training. The sessions are shorted to prevent fatigue.
Training is gentler to ensure you are fresh when the race begins.