By RunDoyen.
Featuring coaching insights from Ryan Vail.
Adapted from a RunDoyen coach conversation and edited for clarity.
TL;DR
- Overtraining is usually not one mistake. It is a stack of small ones: too few rest days, easy runs that are not easy, and workouts squeezed too close together.
- Your best training has rhythm: hard days feel hard, easy days feel easy, and recovery is part of the plan, not a reward you earn.
- Easy pace should fluctuate with fatigue. Forcing a pace window can quietly turn recovery into more stress.
- Cutting recovery between reps or adding “bonus reps” often changes the workout and steals quality from the days that matter.
- After big efforts, especially the marathon, taking more time off than you think is often what keeps you progressing.
If you want a coach to sanity-check your week, protect your recovery, and keep your hard days productive, use RunDoyen’s coach matching to get paired with the right fit.
Table of Contents
- What overtraining actually is (and why it sneaks up on runners)
- The four patterns that cause overtraining most often
- Make the system work: hard days hard, easy days easy
- Overtraining Prevention Cheat Sheet: the 4-lever audit
- Common mistakes
- Safety and when to get help
- Train for race day, not for Tuesday
What overtraining actually is (and why it sneaks up on runners)
A lot of runners hear “overtraining” and picture the most extreme version: someone grinding huge mileage, doing brutal workouts, and refusing to take a day off. That happens, but most overtraining is quieter than that.
In practice, overtraining tends to look like a combination of:
- not taking enough rest (or not taking the rest you planned),
- running easy days harder than your body can absorb,
- stacking intense workouts too close together.
The tricky part is that none of these choices feels disastrous in the moment. Many runners are motivated, consistent, and tough minded. That’s usually a strength. But it can also create a common trap: you feel like you should be doing more, so you keep turning the dial up. Eventually, you stop adapting and start dragging.
A useful mental model is this: training works best when you let your body oscillate.
- You feel good and sharp on a hard day, you nail the stimulus.
- You feel lower the next day or two, you recover.
- You rebound, and you can hit the next hard day well.
If you flatten that wave into one steady grind, you often end up with a steady result: stale legs, average workouts, and slower improvement.
The four patterns that cause overtraining most often
1) “I don’t need rest days.”
Rest is individual. Some runners run seven days a week. Others thrive on two to four run days. The point is not a magic number. The point is whether your week is structured so you can recover enough to do quality work when it matters.
Even high-volume runners who run daily still build recovery in other ways:
- truly easy runs,
- occasional down days,
- sometimes replacing a run with light cross-training,
- spacing hard sessions intelligently.
If your plan includes a rest day, the simplest rule is also the most effective: take the rest day. It’s there to make your next key sessions better, not to punish you.
2) Easy days that are not actually easy
This is one of the most common reasons runners feel “flat” even when they are training consistently. The watch, the pace calculators, and the social feed can nudge you toward a false standard: “My easy runs should always be X pace.”
In reality, easy pace should move around depending on fatigue. If you hammered a workout yesterday, your easy run might be much slower than the same route felt three days ago. That is normal. Trying to “hold pace” on a tired day is a sneaky way to turn recovery into more load.
A simple line that holds up for a lot of runners:
If you’re not sure if you’re running fast enough, slow down.
If you want a deeper refresher on what “easy” should feel like, visit recovery days.
3) Too many intense workouts in a short window
Motivated runners often have the same thought right after a great session: “I feel good. Can I add one more workout this week?”
That urge makes sense. It also ignores how fitness is built: not from one workout, but from the consistency of the next 5–10 sessions. When hard days start creeping closer together, you might still survive the first week or two. Then the hidden bill comes due.
A coach’s role is often to say: “We’re not optimizing for this one workout. We’re protecting the next month.”
4) No reset after a goal race or season
This one hits marathoners hard, and it also shows up in high school and college runners who try to race nearly year-round.
After a big race effort, you are not just “tired.” You are carrying a deeper load: soreness, micro-damage, and nervous system fatigue. The fear is losing fitness. The reality is that you usually lose far less fitness than you think, especially over short breaks.
A marathon is a good example because you cannot truly replicate it in training. If you are racing the distance, your body absorbs a stress you only see once or twice a year. That’s why post-marathon recovery plans often matter as much as the final long run.
If you are coming off 26.2, this resource can help you map a sane return: Marathon recovery plan.
Make the system work: hard days hard, easy days easy
Stop letting technology turn recovery into a competition
GPS and apps are useful tools. They can also create pressure:
- chasing a pace range on easy days,
- checking splits every mile,
- posting everything and feeling like you need to “prove” you had a good day.
One of the simplest fixes is also the most effective: reduce the data on easy days.
- Leave the watch at home sometimes.
- Run a route where you do not know mile markers.
- Use the watch to record time, but hide pace screens so you are not pacing your recovery.
If you love using metrics, consider making easy runs heart-rate guided (General guidance). Many runners find that heart rate keeps them honest on days when they feel competitive, stressed, or keyed up.
Protect the purpose of the workout by protecting the recovery
Two common execution mistakes push runners toward overtraining while also making workouts less effective:
1) Adding reps because you feel good
Finishing a workout feeling like you could do more is often a feature, not a bug. When you add reps, you drift closer to race effort. Most runners have only so many near-max efforts they can absorb in a season. Spend them wisely.
2) Cutting rest between reps because you feel good
Recovery times are part of the design. Trimming a planned rest can shift the workout’s stimulus and make the late reps slower and sloppier. If your coach wrote the rest, use it to make the last reps better, not to make the early reps feel harder.
Beware the “gray zone”
There is a tempting training zone that feels productive because it is harder than easy, but not quite hard. The problem is that it can create the worst tradeoff: it costs recovery like a workout, but does not deliver the clear stimulus of a real quality session.
If you want to run fast 5K to marathon performances, most runners do better with a simpler pattern:
- easy days that are truly easy,
- a few targeted workouts done well,
- enough recovery that those workouts actually pop.
Use cross-training as a mental release valve (without turning it into another hammer)
If rest days make you anxious, cross-training can help you keep your routine while reducing impact. The key is keeping the effort easy. Options many runners use:
- cycling,
- swimming,
- elliptical,
- mobility or yoga,
- light strength work.
For ideas and structure, see cross training for runners.
Overtraining Prevention Cheat Sheet: the 4-lever audit
| Lever to check | What it looks like when it’s off | Quick fix to try this week | How you know it’s working |
| Rest days and downtime | You never truly back off, or you skip planned rest | Keep the planned rest. If unsure, take one extra easy day | Your next workout pace/effort improves without forcing it |
| Easy-day intensity | Easy runs have “pace goals,” or you feel drained daily | Run by feel, slow down early, let pace vary | You finish easy days feeling better, not worse |
| Workout spacing | You keep moving workouts up, or stacking “extra” sessions | Keep 48–72 hours between quality days (General guidance) | Hard days feel sharper, and you stop dreading them |
| Post-race and between-season reset | You jump back in like the race never happened | Plan a reset block after big races and seasons | You return with springy legs instead of lingering heaviness |
A concrete example you can apply
Let’s say your plan calls for a midweek workout like 4 x 1 mile. You skip your rest day, run your easy runs too hard, and squeeze the workout closer to your last hard session. The likely outcome is not that you “get tougher.” The likely outcome is you run that workout a few percent slower, feel flat, and carry fatigue into the next week.
Flip the script:
- keep the rest day,
- let the easy runs float slower if you are tired,
- show up fresh enough to hit the intended effort.
That is how you stack weeks that build fitness instead of weeks that just stack fatigue.
Post-marathon and between-season reset notes
- After a marathon: many runners benefit from a real break. It is common to need more downtime than you think, even when you feel “fine” a few days later.
- Between seasons (especially younger runners): racing becomes available quickly now. A short break between cross-country, indoor, and outdoor can protect long-term development and reduce injury risk. You can use that time for low-stress work like drills, mobility, or light strength, rather than chasing more races.
If you are building volume and worry that backing off will derail you, this guide can help frame progression more safely: Increase Running Mileage Without Getting Injured.
If you want a structured plan that bakes in appropriate recovery for race prep, use the training plan hub.
Common mistakes
- Treating rest days like optional suggestions instead of planned training.
- Forcing “easy pace” to match a calculator, even when tired.
- Moving workouts up because you feel good, then paying for it later.
- Adding reps to a workout instead of finishing strong and stopping on purpose.
- Cutting rest between reps and accidentally changing the workout’s purpose.
- Trying to be “race fit” year-round instead of building toward peaks.
- Posting every run and letting outside validation dictate intensity.
Safety and when to get help
Overtraining and injury risk often overlap, but they are not the same thing. Do not try to “tough it out” when your body is signaling something is wrong.
Consider backing off and seeking qualified help if you notice:
- pain that changes your stride,
- pain that worsens as you run,
- pain that persists day to day instead of improving,
- unusual fatigue that does not lift with a few easy days,
- recurring issues that keep returning when training builds.
General guidance: when something feels like an injury is brewing, taking two days early can prevent losing weeks later. When in doubt, err on the side of caution and consult an appropriate medical professional.
Train for race day, not for Tuesday
The runners who improve the most are often the ones who can do something deceptively hard: hold back on the days that do not matter, so they can show up for the days that do.
If you want help building that balance into your training, compare coaches and find someone who fits your goals.
FAQ
1) What are common signs of overtraining in running?
Common signs include persistent heaviness, flat workouts, unusual fatigue, and needing more effort to hit paces that used to feel comfortable. Overtraining often shows up after stacking small stresses repeatedly.
2) How many rest days should runners take?
It is individual. Many runners benefit from at least one true rest or very low-stress day per week, especially when intensity is present. The bigger rule is whether rest is sufficient to keep hard days productive.
3) Should easy runs be the same pace every time?
No. Easy pace should vary based on fatigue, terrain, weather, and stress. Forcing a fixed pace can quietly turn easy days into moderate stress days.
4) Is it bad to add reps when a workout feels great?
Often, yes. Adding reps can push you closer to race effort and spend energy you would rather keep for the next sessions. Finishing with something left is frequently a sign the workout was executed well.
5) Why does cutting rest between intervals matter?
Because rest is part of the workout design. Cutting rest can change the stimulus and lead to poorer late reps, turning a quality session into a grind.
6) How long should I take off after a marathon?
Many runners do well with a meaningful reset, and it can be longer than you expect. Fitness loss is slower than most runners fear, and returning too soon can increase injury risk.
7) How can an online running coach help prevent overtraining?
An online running coach can spot patterns you might miss, protect recovery, and adjust training when life stress, soreness, or fatigue builds, so you keep progressing instead of stalling.
