Supplements for Runners — Running Nutrition | 6AM Run

Every marathon runner knows the feeling. You can run easy for hours. You can survive a few hard intervals on the track. But holding a pace that feels comfortably hard for 30, 40, 60 minutes? That is where races are won or lost — and it is exactly what a tempo run trains.

Done right, one tempo run a week will raise the pace you can hold without blowing up and make marathon pace feel easier on race day. Here is how to do it right.

What a Tempo Run Actually Is

A tempo run is a sustained effort at threshold pace — the fastest pace you could hold for about an hour in a race. Coaches often describe it with one simple test: you can speak a few words at a time, but you cannot hold a conversation.

On a 1-to-10 effort scale, tempo is a 7 to 8. It should feel controlled for the first half and increasingly demanding in the second half, but never like a sprint and never like you are hanging on from mile one.

That is different from your easy Zone 2 runs, where you can talk the whole way, and different from intervals, where you go much harder for a few minutes and recover. Tempo sits in the middle — and marathon pace lives just below it.

How to Find Your Tempo Pace

You do not need a lab test. Use one of these three methods:

1. Recent race time. If you have raced a 10K or half marathon in the last 8 weeks, tempo pace is roughly 15 to 20 seconds per mile slower than 10K pace, or about 10 to 15 seconds per mile faster than half marathon pace for most runners.

2. The talk test. Warm up easy for 10 minutes, then gradually speed up until you can only get out 3 to 4 words before you need a breath. Settle there. If you can chat, speed up. If you cannot get a word out, slow down.

3. Heart rate. For most runners, threshold lands around 85 to 90% of max heart rate, or roughly 88 to 92% of threshold heart rate if you know it. Heart rate lags for the first few minutes, so do not chase the number at the start — let effort lead, then use heart rate to confirm you are not drifting too hard.

Revisit your tempo pace every 4 to 6 weeks. As fitness improves, the same effort gets faster — similar to how tracking your cadence shows form getting more efficient.

The Classic Tempo Workout (Start Here)

If you are new to tempo work, start simple:

• Warm up: 10 to 15 minutes easy, plus 4 short strides (20 seconds quick, relaxed)
• Tempo: 20 minutes at tempo effort, continuous — no walking breaks
• Cool down: 10 minutes easy, then walk 2 to 3 minutes

Run it on flat ground where you can lock into rhythm. Save hills for your hill sessions. Start conservative — you should finish feeling like you could have gone another 5 minutes, tired but in control.

How to Progress It Over 8 Weeks

Tempo responds beautifully to patience. Add a little time, not a lot of speed:

• Weeks 1–2: 20 minutes continuous
• Weeks 3–4: 25 to 30 minutes continuous
• Weeks 5–6: 2 x 15 minutes with 2 minutes easy between, or 35 minutes continuous
• Weeks 7–8: 40 minutes continuous, or a progression tempo (last 10 minutes slightly faster)

In a peak block, build to 45 to 60 minutes broken into blocks (e.g. 3 x 12 minutes with 2 minutes easy). Do one tempo session per week, pair it with a long run, and fill the rest with easy miles — the hard/easy balance behind the base-building approach.

Tempo Inside Your Long Run

Once you have 4 to 6 weeks of standalone tempos, try tempo miles inside a long run: for 16 miles, run 10 easy, 4 at tempo, 2 easy. It teaches your legs to hold pace on tired muscles — a direct complement to smart marathon pacing. Keep these occasional, every 2 to 3 weeks.

How to Fuel a Tempo Day

A 20 to 40 minute tempo does not need fuel during the run for most runners, but what you eat before and after matters more than people think.

For an early morning session, I want something light 30 to 60 minutes before: half a banana or toast with honey. Empty leaves me flat; a big breakfast leaves me sloshing. Light and familiar wins.

On longer tempo blocks inside a long run, I treat fueling like race practice and take in carbs during the run. That is where I personally use Marathon Gummies — I built them because I hated sticky gels on my hands at 6 AM and wanted something portable I could chew a little at a time while holding pace. Use whatever your stomach trusts; the point is to practice, not to improvise on race day.

Afterwards, prioritize protein and carbs within the next hour or two and rehydrate. I use FinishLine after hard tempo days for the amino recovery side — it is part of my own routine because the next morning's easy run always tells me whether I recovered or just got through it. Sleep that night matters just as much; hard sessions only make you faster if you absorb them.

5 Tempo Mistakes That Waste the Workout

• Running it too fast. If it feels like a race from minute one, it is not tempo. Back off until it is controlled-hard.
• Running it too often. Two or three tempos a week will bury you. One quality session, recovered from, beats three mediocre ones.
• Skipping the warm-up. Jumping straight to threshold pace shocks the system and raises injury risk. Always give yourself 10 minutes easy first.
• Racing the watch every week. Heat, wind, poor sleep, and fatigue all change pace at the same effort. Run by effort on bad-weather days and let pace be what it is.
• No easy days around it. Put at least one easy or rest day before and after. Tempo in a hole of fatigue teaches your body to slow down, not speed up.

A Simple Week That Works

For a runner training 4 to 5 days a week for a marathon or half marathon:

• Monday: Rest or cross-training
• Tuesday: Tempo run (as above)
• Wednesday: Easy 30 to 45 minutes
• Thursday: Easy miles or rest
• Friday: Easy with a few strides
• Saturday: Long run
• Sunday: Rest or very easy shakeout

Adjust the days to your life — just keep the hard/easy rhythm.

The Bottom Line

Tempo runs are not glamorous — no crowd, no shortcut. But race day asks you to be strong, patient, and efficient for hours. Train that quality once a week, fuel it simply, recover properly, and marathon pace will start to feel like home.

Your turn: Have you tried tempo runs in your training — or do you tend to run everything at the same middle pace? Tell me in the comments what your hardest workout of the week looks like.

— Hami, 6AM Run