Treadmill vert calculator.
Most treadmill calculators tell you how much vert you just climbed. This one runs the other way: give it the elevation gain you want and the distance you have, and it returns the incline, the belt speed, and the time, as a steady grade or as hill repeats.
Set the treadmill to
5.7% for the whole run
- Total time
- 1:06:40
- Distance
- 5.0 mi
- Vert
- 1,500 ft
- Belt speed
- 4.5 mph
5.7% at 4.5 mph · 13:20 /mi
Whole run: Run 5.0 mi at 5.7% grade, 4.5 mph, 1:06:40.
How these numbers are worked out
Grade is arithmetic. Vert divided by distance. 1,500 ft over 5 mi is 1,500 / 26,400, or 5.7%. For hill repeats the share of distance spent on the steep grade is solved so the session still totals exactly the vert you asked for.
Belt speed is physiology. Climbing costs more energy per mile than running flat, so holding the same effort means slowing down. The speeds here come from the measured cost of running against gradient in Minetti 2002, the same curve behind grade-adjusted pace. Ten trained runners, gradients from -45% to +45%, so every treadmill grade sits inside the measured range.
Three numbers are convention, not evidence. The 15% incline ceiling is your machine's limit, not a finding. The 1% recovery grade keeps the legs from fully resetting between hills. A segment is called a hike below 4 mph, because that is roughly where runners switch on a steep belt.
Distance is treated as the belt distance. On a true incline the belt runs slightly longer than the horizontal distance, by about 1% at 15%, which is well inside the variation between treadmills.
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What incline gives you what vert
Vert is grade multiplied by distance, so the incline you need depends on how far you are running, not just on the climb you want. One thousand feet over three miles is a serious pitch. The same thousand feet over eight miles is a slope you would barely notice. The table shows the steady grade each combination needs, which is the figure you dial into the machine.
| Vert | 3 mi | 5 mi | 6 mi | 8 mi | 10 mi |
|---|---|---|---|---|---|
| 500 ft | 3.2% | 1.9% | 1.6% | 1.2% | 0.9% |
| 1,000 ft | 6.3% | 3.8% | 3.2% | 2.4% | 1.9% |
| 1,500 ft | 9.5% | 5.7% | 4.7% | 3.6% | 2.8% |
| 2,000 ft | 12.6% | 7.6% | 6.3% | 4.7% | 3.8% |
| 3,000 ft | 18.9%, steeper than most treadmills allow | 11.4% | 9.5% | 7.1% | 5.7% |
Greyed figures are steeper than the 15% most treadmills allow. Spread the climb over more distance, or take less of it.
Steady grade or hill repeats
A steady grade is the honest rehearsal for a long climb, and it is the easier session to repeat week after week, which is what makes progress visible. Hill repeats put you on a pitch steeper than your average and give you an easy grade to recover on, so you can accumulate time on a gradient you could not hold continuously. The builder solves the split for you: pick the hill grade and the number of repeats, and it works out how much of the run sits on each so the session still totals the vert you asked for.
Why the belt slows down as the incline climbs
Climbing costs more energy per mile than running flat, so the same effort produces a slower speed. A six mile per hour flat effort is about 4.5 mph at 5.7%, and closer to a hike at 15%. That is not the tool being conservative, it is the measured cost of running against gradient, and it is why incline work at genuine steepness is usually hiked rather than run. Enter the speed you would hold on the flat and the builder translates it to every grade in the session.
Treadmill vert questions
How do I turn vert into a treadmill incline?
Why does the builder slow my speed down on the steep parts?
Steady grade or hill repeats, which should I run?
What incline do I need for 1,000 feet of elevation gain?
Is treadmill vert the same as real elevation gain?
My treadmill will not go steep enough. What now?
Also in the calculators
Fuelling the long ones: carb loading and gut training. Daily targets: the macro calculator.
This builder handles one session. Mero turns your training week into meals, a grocery list, and a prep plan.