Twenty-five weeks from now you will be somewhere past mile 70, in the dark, asking yourself what on earth you were thinking. The answer you give yourself in that moment is not something you will find out there. You build it this week, on an index card.

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This is part of a series of posts regarding how we prepare, plan, and train to complete the 100-mile Ultramarathon Umstead 100. Our series for this event: 100 Miles of Harmony. For all the ultrarunning series, here, follow the link. Training for a 100. Alternatively, you can also follow last year’s series in our Podcast so you don’t miss the weekly summary post or our Album with a few songs with learning nuggets to prepare you for an ultra event.

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Base building is over. As of this week the block is officially open, and everything changes character. From here forward, every long run is a dress rehearsal — for your shoes, your stomach, your pacing, your patience. Twenty-five weeks of testing gear and testing yourself.

But before we test a single piece of equipment, we are going to do the least physical work of the entire block. We are going to figure out why you are doing this at all. Not the version you say out loud at a party. The real one. Because we will solve the shoes, and we will solve the stomach, and the fitness will arrive on schedule if you do the work — and none of that holds on the night the thing stops being fun and starts being work.

The Season Ahead — What You Just Signed Up For

Before the reflection, the map. Twenty-five weeks, one post every Sunday, counting down to Saturday, April 3, 2027. Eight races sit on the calendar between here and there. None of them are goals. All of them are instruments — chances to test something under a race number that you cannot test alone on a Tuesday.

Race	Date	Where
Bull City Race Fest	Sun, Oct 18, 2026	Durham
City of Oaks Marathon	Sun, Nov 1, 2026	Raleigh
Skinny Turkey Half	Thu, Nov 26, 2026	Raleigh
Derby 50K	Sat, Nov 28, 2026	Ellerbe
Shakori 40	Fri–Sat, Dec 4–5, 2026	Pittsboro
Salem Lakeshore Frosty Fifty	Fri–Sat, Jan 8–9, 2027	Winston-Salem
Tobacco Road Marathon	Sun, Mar 14, 2027	Cary
Umstead 100	Sat, Apr 3, 2027	Raleigh

The season also has four hard checkpoints built into it, and it helps to know they are coming rather than meet them by surprise:

• Week 19 — the first After-Action Review. Late November. You will have two races behind you and a recovery week with enough slack in it to actually look at them.
• Week 12 — the Go/No-Go. Early January, the honest midpoint. Downgrading the distance or deferring the year is a legitimate outcome of that week, not a failure of it.
• Week 10 — the Blueprint Lock. After this point nothing new enters the plan. No new shoe, no new gel, no new idea you read about in February.
• Week 8 — the Simulation. The full dress rehearsal, everything at once. Taper begins five weeks later.

Everything between those points is repetition. The checkpoints are where you find out what the repetition bought you.

Assessment — Your Motivation Inventory

Your assessment this week is an honest inventory of your own motivation. Most of us have never actually separated our reasons into categories, so they sit in one undifferentiated pile and we assume they are all equally strong. They are not. Some of them will evaporate the moment things get hard.

• Take the external inventory first. The finish line photo. The medal on the wall. What your coworkers will say Monday morning. Write them down without flinching — there is nothing shameful about wanting to be seen doing a hard thing. Just be clear that none of these are load-bearing at mile 78.
• Then take the internal inventory. What do you actually want to find out about yourself? What question are you trying to answer that only 100 miles can answer? These are quieter, harder to articulate, and they are the ones that still work in the dark.
• Watch the cycle without judging it. Over the next few weeks you will swing between genuine excitement and a low-grade what have I done. That oscillation is not doubt about your ability. It is your nervous system correctly assessing the size of the thing. A runner who feels nothing has not understood the distance yet.

One reframe worth sitting with: motivation is not a fixed object you nailed down on registration day. It is a living thing. It grows, it gets sick, it needs feeding. Part of the job over the next 24 weeks is tending it, not just referring back to it.

Planning — Building the Why Card

Here is the work, and it produces an object. Not a feeling, not a resolution, not a good afternoon of thinking — a card. An insight you cannot retrieve at 2AM is not a tool, it is a nice memory. So we are going to make it retrievable.

Get an index card and something to write with. First, answer these five. Out loud is fine. In writing is better. Vague answers are the same as no answers.

1. Strip away the finish line for a second. What are you actually chasing here?
2. What is the reason you would only say to someone you trust completely?
3. Is there a name attached to this run — someone you are carrying, or honoring, or answering?
4. What happened in your life that put you on this particular starting line, and not a different one?
5. Play the finish forward. You cross the line — what specifically changes for you? And in the hours before that, what image do you reach for when everything hurts?

Now build the card. It has two sides and a date.

• The back is the long version. Three or four sentences distilled out of those five answers. This is the side you read on the couch in January when the alarm is set for 4:30 and you have stopped believing your own plan.
• The front is one or two words. Five sentences will not survive hour nineteen. One word will. Find the word that carries the whole paragraph, then let the paragraph go. If nothing lands this week, leave the front blank — the right word usually shows up on a long run, not at a desk.
• Date it, photograph it, and split the copies. The photo goes on your phone lock screen. The card goes wherever your eyes already land without deciding to — bathroom mirror, gear bin lid, the inside of the car visor. On race day it goes in the drop bag.

Keep the original when you outgrow it. You will write a different card in February — we do this again at the Week 12 checkpoint, and once more the week of the race. The distance between the October card and the March card is one of the more interesting things this training block will show you, and you only get to see it if you did not throw the first one away.

One more line for the card, and write it now while it costs you nothing. A Why that will not let you stop is not a stronger Why. It is a more dangerous one. Somewhere in the next 24 weeks you will face a real decision — whether to start, whether to continue, whether to take the shorter option that is sitting right there. You want that decision made by a person with information, not by a story you told yourself in October and felt too proud to revise. Write the permission to stop onto the card. We will pick it up and use it at Week 12.

Diabetes Learning Notes — The Second Discipline

If you are running this with Type 1, you are not signing up for one event. You are signing up for two, run simultaneously, for 24 hours or more. The running is the visible one. The other one is manually performing the job of an organ your body stopped doing for itself — while dehydrated, sleep-deprived, and deep into the night.

I want to be careful with the framing here. This is not a burden bolted onto the race. It is the second discipline. Treat it like a discipline — something with its own skills, its own training, its own progression — and it stops being the thing that might ruin your day and starts being a thing you are genuinely good at.

Your Baseline Audit is the assessment work for the second discipline. Same honesty, different data.

• Pull the data, do not trust the memory. Export or screenshot your last four long runs. On each one, mark exactly two things: the clock time of the first meaningful drift, and what you ate in the 45 minutes before it. Four runs is enough to tell a pattern from a coincidence, and the pattern is the thing we spend the next six months engineering around.
• Name the fuels that betray you. You almost certainly already know two or three products that spike you hard or drop you an hour later. Write them down now, while you are calm, rather than mid-run trying to remember which one did this to you last time.
• Name where the equipment fails. Sensor adhesion in heat. Pump site in the third hour of a hilly run. Receiver signal under a hydration vest. These are engineering problems with engineering answers — but only if you name them 25 weeks out instead of two.

And one thing that is not on the card: get this block onto your endocrinologist’s radar now, in October, not in March. Basal strategy for a 24-hour effort is a conversation that takes several appointments to get right, and the first one needs to happen while there is still a season left to test whatever comes out of it.

Your Second Why goes on the same card, on the same day. Run all five questions again through this lens — not as a runner, but as a runner doing an organ’s job for a full day and night. Three of the five change shape enough to be worth spelling out:

• What does finishing this way mean? Not just covering the distance — covering it while running the second discipline well. That is a materially different accomplishment and it deserves its own sentence on the card.
• Who is watching who does not know it is possible yet? Someone newly diagnosed, or the parent of someone newly diagnosed, is quietly assembling a picture of what their life is allowed to look like. Your finish line photo is data in that picture.
• Write the mile-80 line. One sentence, yours, specific enough that it could not belong to anybody else. When the math gets hard and the numbers are ugly, that line is what you have. Make it good.

Say this part out loud now, while it is easy: for you, the permission to stop is not a mindset choice. It is clinical. Severe hypoglycemia past mile 70, in the dark, out of reach of your crew, is not a rough patch to push through — it is a medical emergency, and pushing is how it becomes a catastrophe. So make it concrete this week: decide the number and the symptom that end your day, write them on the card next to your Why, and tell your crew what they are out loud. The runners who do this for a decade are the ones who decided that in October, not at 1AM in April.

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Do the writing this week. It takes twenty minutes and it is the highest-leverage twenty minutes of the entire block — everything we build between now and April gets bolted to that card.

And you get to field-test it almost immediately. Bull City Race Fest is in Durham next Sunday, one week from today. That is your first chance to carry a freshly written card into an actual race environment and see whether it holds up with a number pinned to your chest. Next week we talk about exactly that — what tune-up races are really for, and why the answer is not a fitness test.

This Week’s Actual Numbers

Week 25	Mon	Tue	Wed	Thu	Fri	Sat	Sun	Total
Plan	Stretches & Rolling	3	5	3	Rest	13	15	39
Actual	Stretches	4	9	2	Rest	21	Rest	36

Next Week Plan

Week 24	Mon	Tue	Wed	Thu	Fri	Sat	Sun	Total
Plan	Stretches & Rolling	3	5	3	Rest	Rest	13	24

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