How to choose a training plan
Start from the training you are already doing, not from the race you want. It is the one reversal that makes a plan survivable.
- Pick from your current training, not your goal. Week one should resemble the week you already run.
- Days per week matters more than total volume for whether a plan survives contact with your life.
- A plan you complete at 80% is worth more than a plan you abandon in week five.
- Check the peak week before you start — that is what you are actually signing up for.
When a plan gets abandoned, the reason is usually visible before week one: the plan was chosen from the finish line rather than from the start line. A first week that already asks more than your current normal week is a week you will be recovering from rather than building on.
Someone decides to run a half marathon, finds a half marathon plan, and discovers in week five that it assumed a base they did not have. The plan was not wrong. It was written for a different runner.
Start from what you already do
Before looking at any plan, write down three things about your current running:
- Days per week you actually run, averaged over the last month — not the good month.
- Total time you run in a normal week.
- Longest run you have done comfortably in the last month.
Now open the plan at week one. If those three numbers roughly match, it is a plan for you. If week one is materially bigger than your normal week, it is a plan for someone else — and the honest move is to spend a few weeks getting to its starting line first.
The three things worth checking before committing
| Check | Why it matters | Warning sign |
|---|---|---|
| Week one | It tells you who the plan is written for | Noticeably more than you run now |
| Days per week | Decides whether it fits your life at all | Six days when you can manage four |
| The peak week | It is the real commitment, arriving in week ten | A peak you cannot picture surviving |
Days per week matters more than total volume
A plan asking for four runs of forty minutes is a very different proposition from one asking for six of thirty, even though the totals are close. The six-day plan needs six openings in your week, six sets of shoes on, six negotiations with the weather.
Choose the number of days you can genuinely protect, then find the plan built around that number — rather than choosing a plan and hoping the days appear.
A plan whose first week is within about ten to fifteen percent of your current weekly running is usually a comfortable start. That figure is a way of noticing a plan is too ambitious, not a threshold with anything special about it.
What to do when it goes wrong, before it goes wrong
Decide now, while you are calm, what you will do when you miss a week — because you will. A plan followed at eighty percent for sixteen weeks produces a considerably better outcome than one followed perfectly for five and then abandoned.
The specifics of adjusting are their own subject: what to do when you miss a workout.
The uncomfortable question
Is the goal the race, or is the goal to still be running next year? Both are legitimate, and they lead to different plans. A plan that gets you to one finish line and leaves you injured has succeeded at the first and failed at the second.
Common questions
How do I know if a training plan is too hard for me?
Look at week one, not week twelve. If the first week asks for materially more running than you currently do — more days, or noticeably more time — the plan is starting above you, and the gap tends to compound rather than close.
Should I follow a plan exactly?
Treat the shape as fixed and the details as negotiable. Which days you run, and swapping a session when life intervenes, matter far less than keeping the overall pattern of easy running, one long run and a small amount of quality work.
What if a plan starts above my current mileage?
Spend a few weeks building to the plan’s first week before starting it. That is not a delay — it is the part of the plan the plan left out.
How many weeks should a plan be?
Long enough to build gradually and short enough to stay interested. Twelve to sixteen weeks is common for a half or full marathon, eight to twelve for shorter distances — but the right length is mostly determined by how far your current training sits from the goal.