The Mistakes Checklist

How to use this

Most of these have a single primary cause, and changing several things at once means you never learn which one mattered.

Pick the one that made you wince. Work on it for eight weeks. Then come back.

Intensity

1. Your easy rides are too hard

Zone 2 is 56 to 75 percent of threshold. Most amateurs ride easy days at 80 to 88 percent, which is zone 3: too hard to give you the adaptations of true easy riding, too easy to give you the adaptations of genuine intensity, and it accumulates enough fatigue to wreck your actual hard days.

The fix: if you cannot hold a full conversation, slow down. The hardest part is not physical. It is riding home feeling like you did too little.

2. Your hard rides are too easy

The other half of the same error. Riding at 95 percent of threshold and calling it intervals does not count. Real high-intensity work sits at 105 to 120 percent.

The fix: four by eight minutes at 105 to 110 percent, or five by five at 115. Easy easier, hard harder.

3. You start intervals in November

Starting quality work early always costs more than it gains. Intense intervals produce their largest gains when they sit on an established aerobic base rather than substituting for one.

The fix: base first. Intervals in November buy you a fast February and cost you a fast July.

Load and recovery

4. That epic weekend ride costs you three weeks

When a single ride exceeds about half of a typical week's riding, the skip rate on your next hard session jumps from 24 percent to as high as 69 percent, and it stays elevated for roughly three weeks. Each extra skipped hard session per month costs around five watts of annual threshold gain.

The fix: keep the long ride under half your typical week, and do not schedule a hard session within three days of a big one. This is not an argument against big rides. It is an argument for planning what follows them.

5. You cram your week into three days

You do not need one epic ride to pay that price. When three days of riding hold a full week's worth, skip rates climb past 50 percent.

The fix: spread it. The same total across five moderate days gets absorbed. Stacked into three, it spikes.

6. You try to make up missed sessions

Compressing missed training into fewer days means each stimulus arrives before recovery from the last has finished, so you collect the fatigue and none of the fitness.

The fix: rejoin the plan where the plan is. The missed session is gone.

7. You skip recovery weeks

Fitness is built during the recovery that follows hard training, not during the training itself. Skip the deload and fatigue accumulates until performance stalls. A rider who never deloads trains hard for months and gets slower.

The fix: every three to four weeks, cut volume by 30 to 40 percent, keep one or two short quality touches, and stay active rather than resting completely. You should finish the week fresh and hungry.

8. You go all or nothing on a disrupted week

Completing 70 percent of planned load is a productive week. Most riders treat 70 percent as if it were zero, and then deliver zero.

The fix: thirty easy minutes when the plan said ninety at threshold. The choice was never between the perfect session and nothing.

9. You race every group ride

A hard chain gang is a key session whether or not you planned it as one. Three group rides a week is three hard days, before any intervals you also gave yourself.

The fix: count every hard group ride against your two to three hard days, and move the rest of the week around it.

Measurement

10. You judge your fitness by average speed

It is moved by wind, terrain, traffic, drafting and route, all independently of you. You can get significantly fitter across a season and watch it stay flat.

The fix: watch power, normalised power on variable rides, decoupling, and your power curve. A slow ride into a headwind at strong power is a good ride.

11. You chase kilometres instead of load

Two 200 kilometre weeks can be completely different training. Distance cannot see intensity or terrain.

The fix: count training load, time in zone, or honest hours.

12. You treat your Fitness score as fitness

It measures accumulated training load, not strength. It drops during a taper by design, while you get faster. It drops during a few days of illness far faster than your actual power does.

The fix: watch your power alongside the line.

13. You test your threshold when you are already tired

Your threshold is the anchor for every zone you have. A test on tired legs miscalibrates all of them for months. The standard 20-minute test also overestimates by five to ten percent for riders with high anaerobic capacity, which includes sprinters, criterium racers, newer cyclists, and anyone who is simply very good at suffering.

The fix: if zone 4 feels maximal from the first rep and you cannot finish prescribed intervals, take five percent off and reassess in four weeks. If your intervals improve and you recover better, it was too high.

14. You compare indoor and outdoor numbers

Outdoor threshold reads five to ten percent higher than indoor. That is an environmental effect, not lost fitness.

The fix: indoor threshold is roughly your outdoor number multiplied by 0.90. If you hate the turbo, check this before you blame the turbo.

Planning

15. You quit the plan at week three

Meaningful adaptation takes two to six weeks, and threshold changes take four to eight. Week three is measuring noise.

The fix: commit to six to eight weeks, and track the signals that move first: lower heart rate at the same power, lower perceived effort, better session completion.

16. You have three A races

Peak Form holds for roughly three to four weeks. Tapering for everything leaves no time to build anything, and you trade real fitness for a run of minor peaks.

The fix: one to three A races a year get a full taper. Everything else is ridden through inside the block.

The ones that are not about riding

17. You never lift

A meta-analysis of 262 cyclists found heavy strength training significantly improved cycling economy. It does not add meaningful body mass in trained athletes who are not eating in surplus.

The fix: two sessions a week, heavy and low rep, built on compound movements, scheduled before easy days and never before a key bike session.

18. You under-fuel the sessions that matter most

Fuel for the work required. Riding a hard session on empty means missed targets, higher perceived effort and a compromised stimulus. There is no adaptation bonus for suffering through it.

The fix: 40 to 80g of carbohydrate in the hour before a hard or long session, and 60 to 80g per hour during anything past an hour. Ride low on carbohydrate only on genuinely easy rides.

19. You train hard and sleep badly

Athletes who extended sleep to ten hours a night improved sprint times by nine percent, with no training changes at all. And six hours a night for two weeks impairs you comparably to two nights of no sleep, without you being able to notice it happening.

The fix: the single most powerful change is a consistent wake time, seven days a week. Not an early night before a big day.

20. You ride through illness

Fever, chest symptoms, or feeling ill all over means stop training and speak to a doctor. We are not medical professionals and this is training guidance rather than medical advice. If you are unsure which side of that line you are on, that uncertainty is itself a reason to ask someone qualified.

On the training side, the damage is rarely the illness. It is the story that the season is ruined, which drives training through symptoms and cramming on return. Your Fitness score falls because it tracks load rather than strength, and genuine detraining takes weeks rather than days.

The fix: rest until symptoms resolve, come back easy and short, expect one to three rides that feel worse than your fitness actually is, and do not try to make up the missed intensity.

If you only fix one

Slow your easy rides down.

It is the correction that buys most amateur riders the most, it costs nothing, it needs no equipment, and it makes your hard days better by making them possible.