New role: the first 100 days are not enough

And yet something has changed: the grace period is over.
The benevolent looks of the first weeks have turned evaluative.
The “let’s give them time to settle in” has quietly disappeared from conversations.

It is precisely here, at the moment all the literature on new roles abandons you, that the race really begins.

New role: the comfortable myth of the 100 days

You know the rule: everything is supposedly decided in the first 100 days.

This figure, inherited from political tradition and then popularized by management books on the first 90 days, has one huge merit: it pushes you to prepare your arrival instead of being swept along by it. And one huge flaw: it makes you believe that once past that milestone, the essentials are secured.

The figures tell a different story. According to several studies, about four in ten executives leave their new role within the first eighteen months. Not within the first hundred days. Within eighteen months. Which means most failed transitions happen after the period everyone told you to secure.

Why? Because the first 100 days measure your ability to start well.
They say nothing about your ability to last, to transform, to make your mark once the novelty has worn off. And that is what your organization will really judge you on.

Put differently: you were trained for a sprint.
But the race you are being asked to run is a 1500 metres.

The 1500 metres, the tacticians’ race

On an athletics track, the 1500 metres is an event apart.
It is neither a sprint (impossible to hold top speed over three and a half laps) nor a long-distance race where only endurance counts. It is the most tactical race in the stadium: you have to start fast without burning out, position yourself in the pack without getting boxed in, read the rhythm of the race, and keep enough clarity and energy to accelerate in the last 300 metres, when everything is decided.

Replace the track with your organization, and the analogy becomes unsettlingly precise...

The start matters, but it doesn’t make the race.
A 1500 m athlete who fluffs the start can still win. An athlete who starts like a sprinter will blow up on the second lap. In a new role, the mechanics are the same: managers who pile up spectacular initiatives in the first weeks to “make their mark” often create confusion, use up their credit and find themselves with no energy (and no allies) just when real resistance appears.

You have to know how to run in a pack.
In the 1500 m, you never run alone. You position yourself, you watch who is setting the pace, you avoid getting boxed in on the inside.
In your new role, the pack is your peers, your management, the informal networks of influence.
Identifying them, understanding who really sets the organization’s pace (not always the person the org chart points to): that is work that takes far more than a hundred days.

At first the pace is imposed on you, then you impose it.
Runners talk about the “pace” of the race: the collective rhythm you endure before, perhaps, dictating it.
In your first six months, you run at the organization’s pace: its rituals, its codes, its culture.
The tipping point of a successful transition is the moment, often between month 8 and month 14, when you start setting the tempo.

And then there are the last 300 metres.
That is where 1500 m races are won: in the final acceleration that requires having managed your effort over the whole distance. In your new role, those last 300 metres are months 12 to 18: the moment your transformations must become visible, your team must run without you watching every bend, and your legitimacy is no longer questioned. Those who gave everything in the initial sprint have nothing left at that moment.

Month 4: the moment everyone lets go of you

There is a phenomenon I see in many of the managers I support, and which no 100-day guide talks about: the month-4 dip.

For the first three months, everyone looks after you.
Human resources follow your onboarding, your manager gives you time, your teams are patient. Then, somewhere between day 100 and day 130, that attention evaporates. You are officially “onboarded”.
On the ground, it is exactly the moment when the difficult files that had been set aside “until you arrived” land on your desk. When the first real crisis breaks out. When a team member tests, for real this time, the limits of your framework.

In racing, this is the moment the pace picks up just as your legs start to stiffen.
That is where gaps open up, in one direction or the other.
And that is exactly why support that stops on day 100 leaves you at the worst possible moment: at the kilometre where you most need an outside perspective, a pace to hold and someone to remind you of your race plan.

Running your new role over the right distance: four principles

• Plan over 18 months, not 100 days.
  Keep your 30-60-90 day plan: it remains an excellent starting tool.
  But complement it with a roadmap on three horizons: what you want to have understood at 6 months, transformed at 12 months, anchored at 18 months. If you can’t answer the question “what will my department look like in a year and a half?”, you are running without knowing the distance of the event.
• Manage your pace, not just your results.
  Your first victories (the famous quick wins) should be chosen the way a runner chooses their surges: few, visible, and well timed. Two or three targeted successes in the first six months are better than ten open initiatives that all run out of breath in month 8.
• Find the organization’s pace before trying to change it.
  Devote your first months to understanding who really sets the rhythm: which decisions are made where, which rules are written down nowhere, whom you need to convince for things to really move. In the 1500 m as in business, you only take the lead once you have understood how the race is run.
• Plan your refuelling stops.
  Trail runners know it: you don’t last the distance without planned aid stations.
  Yours are called progress reviews, mentors, trusted peers... or a coach.
  The manager who waits until they are struggling to look for support is like the runner who waits until they hit the wall to eat: they have already lost precious minutes.

Sprint and 1500 metres: two races, one finish

Let’s be clear: I’m not telling you the first 100 days don’t count.
A botched sprint puts you in a difficult position, never irretrievable, but costly.

What I am telling you is that the sprint is only the first part of the race.
Starting well is a matter of sprinting: preparation, explosiveness, the right first strides.
Lasting, transforming and taking root are a matter of the 1500 metres: tactics, managing effort, positioning, and that final acceleration nobody sees coming except you, because you have been preparing it since the first bend.

So the real question isn’t “how do I make a success of my first 100 days?”.
It is: “What distance am I training for?”

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