Runsense argues against catch-up mileage after a missed week. We examine the maintenance research and its limits for endurance athletes over 35.
In an article published October 19, 2026, Runsense argues that runners should resume from the week they are in rather than repay missed mileage. The piece by Raph uses research on maintaining performance during reduced training to challenge the idea that every missed session creates a debt.
That distinction matters when interpreting a training plan. The schedule describes intended work. It does not establish that work left undone belongs in the next available slot. Reendure’s reading of the evidence is modest: a disrupted week calls for a fresh planning decision rather than automatic mileage repayment.
Runsense builds its argument around Barry Spiering and colleagues’ 2021 review, Maintaining Physical Performance: The Minimal Dose of Exercise Needed to Preserve Endurance and Strength Over Time.
According to Runsense’s summary, endurance performance was maintained for up to 15 weeks under some reduced-training conditions. Those conditions included training as few as two sessions weekly. The summary also describes sessions shortened by one-third to two-thirds while effort was maintained.
The central finding is that reduced training retained value under the conditions reviewed. Cutting back did not necessarily mean losing the performance being measured. That gives the discussion a more useful starting point than treating the original schedule as the only worthwhile version of the week.
Runsense interprets the review as suggesting that effort may matter more than frequency or duration when the objective is maintenance. In plain language, the character of the remaining training may matter alongside how often or how long someone trains.
For planning purposes, this separates two questions that can otherwise become tangled:
The first question describes the plan before the disruption. The second addresses the circumstances afterward. Runsense’s argument is that the revised week should be built around the latter rather than around recovering every missing mile.
The evidence needs several boundaries before it becomes useful guidance.
Maintenance is different from improvement. Runsense expressly notes that the Spiering review concerns preserving performance rather than building it. A reduced schedule that maintains an outcome does not automatically become a plan for continued progress.
The review does not provide a precise athlete-specific prescription. Runsense acknowledges that the evidence was insufficient for specific recommendations to athletes. The available summary also provides no age-stratified results that establish a distinct approach for masters athletes.
The proposed smallest week is an interpretation. Runsense suggests two short runs, with one including a harder-effort segment when appropriate. That exact combination was not established as a universal response to one missed week. The reduced-training findings also should not be combined into a single recipe that assumes every reported condition works together.
The reason for the interruption matters. The article does not establish that harder work is appropriate during illness, injury or inadequate recovery. It supplies no return-to-training protocol for those circumstances. Personal decisions about those situations belong with qualified healthcare professionals rather than a generic maintenance example.
There is also a separate body of evidence about stopping training completely. In its October 14, 2026 article, TrainingPeaks summarizes a cessation study by Coyle and colleagues involving seven endurance athletes. TrainingPeaks reports a 7% decline in VO₂max after 21 days of inactivity and a 16% decline after 56 days, with levels then stabilizing.
Those findings describe complete inactivity over longer periods. They do not measure the cost of exactly one missed week or the effect of keeping some training in place. Using them as a numerical forecast for a disrupted week would answer a different question from the one the study examined.
These distinctions leave a clear practical direction: consider reduced training as a flexible maintenance option and avoid treating missed mileage as an automatic obligation.
For an ambitious endurance athlete over 35, the useful shift is from repayment to purpose. Instead of asking how to restore the original weekly total, the planning conversation can start with what the current week is meant to achieve.
At Reendure, our training and recovery guidance puts immediate performance alongside staying competitive and active for years. Our structured training guides emphasize progressive overload, proper recovery and longevity. Within that positioning, maintenance is a legitimate objective when circumstances make it the appropriate one.
That does not require turning a disrupted week into a complicated replacement program. It requires being clear about the decision being made.
Runsense’s central recommendation is to resume from the current week rather than add make-up mileage. The practical value is that the revised plan starts with present circumstances instead of an unchanged commitment to past intentions.
A useful planning question is whether proposed extra work serves the current plan or exists only because a session was missed. That question does not decide the answer for an individual athlete. It makes the reason for adding work explicit.
For example, describing a session as necessary because it was on last week’s calendar is different from explaining why it belongs in this week’s plan. The former is a repayment argument. The latter is a training decision that can be discussed on its own merits.
Our guide to building training around real-life commitments provides a broader framework for that planning conversation. The connection here is straightforward: a schedule should reflect the circumstances in which it will actually be used.
A smaller week can be described as a maintenance week rather than as an incomplete attempt to perform the original schedule. That language keeps the objective visible without pretending the disruption never happened.
When discussing a revised plan with a qualified coach, useful questions include:
These are decision questions rather than a workout protocol. Their role is to keep the revised plan connected to an explicit purpose. They also prevent a general research finding from silently becoming a personal training prescription.
Reendure’s discussion of prioritizing the purpose of each session offers another way to frame that conversation. The relevant principle is intentional planning rather than assuming that a fuller calendar is always the goal.
Choosing maintenance as a temporary objective does not require changing a long-term performance goal. The distinction is between what the athlete wants to achieve over time and what a particular disrupted week is being asked to accomplish.
Reendure’s position is that ambition and realistic planning belong together. Progressive overload remains part of our training philosophy. So do recovery and longevity.
From that perspective, the missed-week discussion is not an argument for doing as little as possible. It is an argument for making the next training decision deliberately. A previous mileage target should inform that discussion without automatically deciding it.
Runsense’s article offers a reasonable challenge to automatic catch-up training. Its summary of maintenance research shows why a reduced week deserves consideration on its own terms rather than being dismissed as worthless because it falls short of the original plan.
The evidence-grounded takeaway is to plan forward. Give the revised week a clear purpose and distinguish that purpose from the desire to erase a gap in the calendar. Where reduced training is appropriate, maintenance can be the stated objective rather than an accidental outcome.
For endurance athletes over 35, this is a useful way to keep ambition connected to judgment. A missed session is information for the next planning decision. It is not automatically a mileage debt.
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