“Finish a marathon this year.” The moment you write that down, the next question hits immediately: so what do I do today?
When the distance between a big goal and today’s action is too wide, the goal just sits there as a sentence. It never turns into anything you actually do.
Locke and Latham’s goal-setting theory makes the same point: a big, distant goal needs to be broken into smaller, proximal sub-goals to keep motivation and performance up.
Using a marathon as the example, here’s how you actually close that gap, step by step.
Step 1: Write the goal
Write one goal at the top: “Finish a marathon (42.195km).” Measure it as done-or-not: on race day, either you finished or you didn’t. At this stage, there’s still nothing to do today.
Step 2: Split it by time period
If the race is six months away, add monthly sub-goals underneath it. “Month 1: 60km this month,” “Month 2: 80km,” gradually increasing training volume all the way to month six.
Hal Higdon’s widely-used 18-week Novice 1 marathon plan follows a similar shape, ramping long runs from 6 miles in week one to a 20-mile peak by week 15, with a lighter stepback week every third week.
Coaches commonly recommend not increasing weekly mileage by more than 10-20% at a time, for the same reason.
Each monthly goal is naturally measured as a running number. You want to watch the kilometers accumulate as you run.
TIP Nest a deload month into the tree, too
Ramping volume every single month raises injury risk. Add a deliberate deload month, a lighter-mileage sub-goal every few months, so you can hold pace without getting hurt.
Step 3: Turn the monthly goal into a weekly habit
Staring at just “60km this month” still feels vague. Underneath it, add a recurring habit: “Run 3x a week, 5km each.”
Fix the days (Tuesday, Thursday, Saturday) and track it as a streak-based habit. 5km × 3 times × 4 weeks = 60km.
Now the monthly goal and the weekly habit are connected by an actual number.
Step 4: Measure each level the way that fits it
Here’s the key part: all three levels are measured differently, on purpose.
- Finish the marathon: done or not (yes/no)
- Distance this month: a running number (how many of the 60km so far)
- Weekly running habit: consistency (how many of this week’s 3 runs, tracked as a streak)
You don’t force everything into one measurement style. Each level just gets measured the way that actually makes sense for it.
NOTE Goals that count down work the same way
The example here stacks distance upward, but a goal you need to bring down from a starting figure to a target one, like body weight or monthly spending, is measured with the same numeric style. Record the starting value alongside it and you get the same proportional read on how far along you are.
Step 5: Run today, check it off, and the rest follows
Tuesday morning, you run 5km and check off the habit. At that moment, the “60km this month” goal’s progress automatically moves up by 5km.
Nothing to copy over by hand. Fill up 60km and you move on to next month’s goal; six months later, all that’s left is checking off race day.
Why measurement changes at each level
As step 4 showed, finishing the marathon, this month’s distance, and the weekly habit each got measured differently: done-or-not, a running number, and a streak.
Try to force all three into one style and things break down.
Measuring whether you finished the race as a number doesn’t mean anything, and reducing “60km this month” to done-or-not erases the information you actually need: how much is left.
Each habit, and even each level of the same goal, has a genuinely different shape, so measurement has to change to match instead of being forced into one mold.
We go into which of check-off, numeric, or avoidance fits which kind of habit in A Checkmark Isn’t Enough: Three Ways to Track a Habit.
Does this same framework work for goals other than a marathon
The framework shown here, splitting a big goal into time periods and then into a recurring habit, isn’t specific to running or exercise.
Any goal with a clear finish line, passing a certification exam, a job search, shipping a product, follows the same sequence: write down the goal, split it into sub-goals by time period, nest a recurring habit underneath, and pick the measurement that fits each level.
For what this looks like when you have to apply the same framework to several goals at once, say, running product, marketing, and finance goals alone at the same time, see A Goal-Task Tree for Solo Founders and Freelancers.
Top to bottom, one step at a time
The vague goal that lived only in your head, “finish a marathon,” split itself into monthly goals and a weekly habit the moment you wrote it down, all the way to today’s 5km run.
When a big goal leaves you unsure what to do, filling it in top to bottom like this makes today’s action obvious.
That same “so what do I do today” you started with turns into something as concrete as “5km, Tuesday morning.”