By RunDoyen.
Featuring coaching insights from TJ Garlatz and Will Benitez.
RunDoyen connects runners with expert online running coaches and race-focused training plans built around real goals, real schedules, and long-term progress.
TL;DR
- Threshold training is “high-end aerobic” running that builds strength you can use from the 5K through the marathon.
- A practical starting definition: a bit slower than 10K pace and a bit faster than half marathon pace, roughly the hardest effort you could race for about an hour.
- Most runners thrive on one threshold session per week, some can add a second lighter threshold touch.
- Continuous threshold and broken threshold intervals both work, the key is control, not proving fitness.
- The biggest mistake is running threshold too hard, which turns it into a mini race and costs extra recovery.
If you want help dialing in your threshold pace and fitting it into a week that matches your life and goals, you can get paired with a coach here: Get Matched.
Table of Contents
- What threshold training is (and what it is not)
- Why threshold work “unlocks” endurance across distances
- How to find your threshold pace without guessing
- Threshold workout formats that actually work
- How often to do threshold training in a week
- Common mistakes that sabotage threshold sessions
- Safety and when to get help
- Closing: make threshold a year-round skill
What threshold training is (and what it is not)
Threshold training sits in a sweet spot: hard enough to challenge your aerobic system, controlled enough that you can recover and keep building.
A simple working definition from RunDoyen coaching: threshold pace is usually a little slower than 10K pace and a little faster than half marathon pace, often described as the fastest effort you could sustain for about an hour. It is not a sprint, and it is not a “see what I’ve got today” time trial.
Threshold is not a time trial
One of the most common patterns coaches see is runners labeling a hard effort as “tempo” or “threshold,” when the pace is actually closer to a 10K race effort (or faster). That can still be a tough workout, but it is not the same training stimulus, and it is not as repeatable week after week.
A good threshold session usually ends with you thinking:
- “That was honest work.”
- “I could have gone a little faster if I had to.”
- “I can run again tomorrow.”
If you finish cooked, you likely pushed beyond threshold.
Why threshold work “unlocks” endurance across distances
Threshold training is a cornerstone because it strengthens the ability to run faster while staying primarily aerobic. In practical terms: it helps you hold stronger paces longer, and it supports everything you do on top of it, including race-specific sessions later.
Coaches use threshold year-round because it builds:
- Aerobic strength that carries into 5K and 10K racing
- Durability for half marathon and marathon training
- Confidence through sustained, controlled discomfort
It is one of the most reliable “bang for your buck” intensity choices because it improves fitness without demanding the same recovery cost as frequent all-out interval sessions.
General guidance: threshold training also tends to pair well with steady mileage, strides, and a sensible long run rhythm, because those pieces reinforce each other instead of competing for recovery.
How to find your threshold pace without guessing
There are a few ways to land on a usable threshold pace. Your goal is not a perfect lab number. Your goal is a repeatable training pace you can execute cleanly.
Option 1: Use recent race effort, not your all-time PR
A common error is using an old “best-ever” race result to set threshold pace after time off, missed training, or a fitness dip. That can quietly turn threshold into 10K-pace grinding.
If you want help translating recent training into realistic targets, use a tool like the running pace calculator as a starting point, then adjust based on how well you can complete the session.
Option 2: Use heart rate carefully (and be skeptical of bad data)
Heart rate can be helpful as a guardrail, but only if the data is trustworthy. Wrist sensors can be inconsistent for some runners, and that can send you chasing a number that does not match reality.
Transcript-supported note: threshold is often discussed around the mid-to-high 80% range of max effort, but individual variation is huge. General guidance: if you use heart rate, focus on your personal trends over time, not someone else’s zones.
Option 3: Use controlled effort (RPE) as the final check
General guidance: threshold effort often feels like “comfortably hard.” You can speak a short phrase, but you are not chatty. Breathing is elevated, but not frantic. You can hold it, but you respect it.
If your pace drops rep to rep, or your “steady” threshold turns into a survival shuffle late, you likely started too fast.
Threshold workout formats that actually work
Threshold training is flexible. The best format is the one you can execute consistently, recover from, and progress gradually.
1) Broken threshold intervals (great for learning control)
Broken threshold is often the easiest entry point because short recoveries help you stay under control.
Transcript-backed example:
- Warm up
- 3 x 10 minutes at threshold pace with short recovery
- Cool down
Other practical variations (general guidance):
- 4 x 8 minutes
- 6 x 5 minutes
- 3 x 1 mile (if you know your pace well)
2) Continuous threshold (great for building mental and aerobic durability)
Continuous threshold is steady, uninterrupted work at the same controlled-hard effort. This can be very effective, especially for longer race build-ups, because it teaches you to stay composed when the effort is sustained.
General guidance: if you are newer to threshold, start with 15–20 minutes continuous and build gradually.
3) Progressive long run finishes (a smart way to “touch” threshold)
A progressive long run can include threshold without making the whole run a grind.
Transcript-backed concept: keep the first portion easier, then gradually “crank down” in the second half until you are approaching threshold effort near the end.
This is especially useful when you want to build strength without stacking multiple hard midweek sessions.
4) Uphill threshold (strong stimulus, often less pounding)
Transcript-backed detail: uphill threshold work can deliver a hard aerobic stimulus while reducing pounding compared to flat fast running. That matters for runners who feel beaten up when they run faster on the flat.
This does not mean it is “easy.” It means it can be a smart way to get the benefit while managing impact.
If hills are a big part of your running, you may also like the broader guidance in hill training for runners.
5) Injury-conscious threshold via cross-training
If running hard is what triggers issues, you can sometimes keep the aerobic stimulus using a low-impact tool.
Transcript-backed example style: do something like 6 x 5 minutes with short recovery on a stationary bike, guided by effort or heart rate (if you have reliable data).
If this is relevant for you, a deeper overview of options is in cross training for runners.
Extractable Element: The Threshold Workout Builder (copy/paste template)
Use this to plan a threshold session that is challenging but repeatable.
- Pick your format: broken intervals, continuous steady, uphill, or progressive finish.
- Set the goal: “controlled hard,” not “prove my fitness.”
- Choose a conservative starting dose: 15–30 total minutes of threshold work (start lower if new).
- Warm up properly: 10–20 minutes easy, then a few relaxed strides (general guidance).
- Execute with restraint: first rep should feel almost too easy, then lock in.
- Check for drift: if pace collapses, effort spikes, or form falls apart, you started too hot.
- Finish with confidence: you should be able to cool down and run normally the next day.
How often to do threshold training in a week
For most runners, once per week is the default. Some runners can add a second threshold touch, depending on experience, total training load, and what else is in the week.
A practical way to think about it:
- One threshold day = strong, repeatable aerobic stimulus
- Second threshold touch (optional) = smaller dose, or folded into a progressive run, not two full “big” sessions back-to-back
General guidance: if you add more intensity, you usually have to protect your easy days. If you are unsure whether your easy pace is truly easy, the principles in easy run pace and recovery days can help.
Where threshold fits in a training plan
Threshold is broadly useful across race distances, so it fits well even when you are not in a hyper-specific “race sharpening” phase.
If your goals span multiple distances, you can anchor your training with a plan that matches your target event and season, then layer threshold appropriately. The Training Plans hub is a good starting point for choosing a structure that matches your race and timeline.
Common mistakes that sabotage threshold sessions
- Running it too hard (turning threshold into a time trial)
- Using an old PR to set paces after time off or reduced training
- Starting too fast and fading, instead of finishing steady
- Treating every threshold day like a test rather than a repeatable workout
- Ignoring heat stress and trying to “force” the same pace in hot conditions
- Relying on unreliable heart rate data without cross-checking effort and performance
- Under-fueling around workouts (especially before and after)
- Stacking intensity too close together and losing the benefit of easy-day recovery
For practical fueling habits around quality sessions, see nutrition for runners: hydration, fueling, recovery.
Safety and when to get help
Threshold training should feel challenging, but it should not feel reckless.
Back off and consider getting help if you notice:
- Sharp, worsening pain, or pain that changes your gait
- Symptoms that escalate across reps or linger and worsen after the workout
- Repeated inability to complete threshold sessions despite backing off pacing
- Persistent fatigue, irritability, or declining performance across multiple weeks (general guidance)
General guidance: if you are returning from a setback or have recurring issues, consider choosing a lower-impact threshold option (hills, treadmill, or cross-training) and reduce the dose until you can string together consistent weeks.
Closing: make threshold a year-round skill
Threshold training is not just a workout type, it is a pacing skill. When you learn how to run “controlled hard” without overrunning it, you gain a tool you can use for months and years, not just one race build.
If you want a coach to tailor threshold work to your terrain, schedule, and race goals (and keep it sustainable), browse the RunDoyen coaching roster here: Browse Coaches.
FAQ
1) What is threshold pace for runners?
It is typically a bit slower than 10K pace and a bit faster than half marathon pace, roughly the hardest effort you could race for about an hour.
2) How hard should a threshold run feel?
General guidance: “comfortably hard.” You are working, but controlled. You finish feeling like you could do a little more.
3) Are tempo runs and threshold runs the same thing?
They are often used interchangeably, but definitions vary. If you want to separate them, the key is the intended effort and control (general guidance). Many runners benefit from clarifying the distinction so they stop running threshold too hard.
4) How often should I do threshold workouts?
Most runners do well with one threshold session per week. Some can add a second lighter threshold touch depending on training load.
5) Is threshold training good for marathoners and half marathoners?
Yes. It builds high-end aerobic strength and can make race pace feel more manageable, especially when combined with long runs.
6) Can I do threshold training on hills or trails?
Yes. Uphill threshold can be a smart option, it can reduce pounding while still delivering a strong aerobic stimulus.
7) Should I use heart rate for threshold training?
It can help, but only if your heart rate data is reliable. Many runners do best by combining pacing targets with effort-based checks.
8) How can an online running coach help with threshold training?
An online running coach can set realistic threshold targets based on your current fitness, choose the right format (steady vs intervals vs hills), and balance it with your weekly load so you improve without burning out (general guidance).
