Vert, Explained: How Much Climbing Is a "Climby" Race?

Vert, Explained: How Much Climbing Is a "Climby" Race?

"Vert" is the number that explains why your flat road pace means nothing on a trail. It is short for vertical gain: the total feet — or meters — you climb over a course, added up every time the trail goes up, ignoring every time it goes down. A race can finish exactly where it started and still hand you 11,400 feet of vert. The climbing does not net out. You pay for all of it.

That is why trail and ultra runners describe a course in two numbers, not one: distance and vert. "It's a 100K" tells you almost nothing. "It's a 100K with 11,400 feet" tells you it is a mountain day.

Why Vert Is the Number That Matters

On the road, distance predicts time. On the trail, vert breaks that math. A flat 50K might take a strong runner four hours; the same runner on a 50K with 8,000 feet of climbing can be out there seven or eight. The uphills are slow by nature — most people power-hike anything steep — and the downhills trash your quads without giving the time back. Vert is the hidden distance. It is why finish times on trail spread out so much wider than on the road.

It is also why elevation profiles fool beginners. Course maps stretch the vertical axis — a 10:1 exaggeration is standard — so a climb looks like a wall. Plotted on honest scales, most profiles look nearly flat, which is useless for planning. Learn to read the numbers on the profile, not the shape: the station labels, the mile markers, and the total gain stamped in the corner.

The Feet-Per-Mile Framework

The cleanest way to size up a course is vert divided by distance — average feet of climbing per mile. It is a rough tool, but it sorts races fast:

• Under 50 ft/mile — runnable. Rolling at most. Your road fitness mostly carries over. Think rail-trail 50Ks and flat desert loops.
• Around 100 ft/mile — the "climby" threshold. This is where people start calling a race hilly. A 50-miler at 100 ft/mile is 5,000 feet of gain — enough that hiking the ups becomes a strategy, not a weakness.
• 150-200 ft/mile — a mountain race. A 100K here is 9,000-12,000 feet. You will hike a lot, use your whole aerobic range, and finish hours slower than the distance suggests.
• 250+ ft/mile — brutal. The hardest mountain 100s live here, pushing past 30,000 feet of total gain. These are power-hiking events with running attached.

In metric, 100 ft/mile is about 19 meters per kilometer; a "mountain" course runs 30-40 m/km. Whichever units your race posts, run the division. A course that hides its total vert is usually hiding a lot of it.

What "100 Feet Per Mile" Feels Like

Here is where averages deceive. One hundred feet per mile sounds gentle — it is under a 2% average grade. But vert never arrives evenly. A 100 ft/mile course is not a constant tilt; it is flat valley miles connected by climbs that hit 15-20% for a mile at a time, then hand it all back on a downhill steep enough to wreck your quads. The average is rolling. The experience is a series of walls.

That is why the profile matters more than the average. Two 50Ks can both average 100 ft/mile: one is genuinely rolling and runnable, the other is dead flat with two enormous climbs you will remember for a year. Read where the vert sits, not just how much of it there is.

Training Vert When You Live Somewhere Flat

The cruel part of vert is that you cannot fully fake the specific downhill-pounding fitness on flat ground — but you can build most of the engine. Flatlanders get to mountain races every year on substitutes:

• Treadmill incline. Most treadmills max out at 15%, which is steeper than a lot of real climbs. Hike it at a hard effort; incline hiking at 12-15% is the closest indoor match to a mountain grind.
• Stairs and stairmills. A gym stairmill is pure vert with no descent to trash your legs — great for building the climbing engine. Real stairwells and stadium sections work too.
• Hill repeats. One good hill, run or hiked hard on the way up, easy down, repeated. A quarter-mile hill done ten times is real vertical in the bank.
• Parking garages. The flatlander's mountain. Loop the ramps for continuous climbing when nothing else is tall enough.

Track vert by the week, the way you track mileage. A common build for a mountain goal race ramps weekly gain toward — and sometimes past — the race's per-day vert, so the climbing feels rehearsed rather than novel. A structured plan matters more here than in flat racing, and the coaching literature spells out how to periodize climbing volume; the standard reference on structuring ultra training is the one most coaches hand a new mountain runner.

Poles: The Vert Multiplier

Past about 15% grade, trekking poles stop being optional for a lot of runners and start being free speed. They move load into your arms, protect your quads for the descents, and keep you upright on loose steep ground. Nearly every climby mountain course has a wall where you will watch pole users walk away from you.

If your goal race lives north of 150 ft/mile, folding Z-poles are the standard answer — light, packable into a vest, deployed in seconds at the base of a climb. The go-to carbon Z-fold poles show up at the start line of every vertical race for a reason, and where to stash them mid-race is part of the larger vest-versus-belt carry question.

Once you can read vert, a course stops being a mystery distance and becomes a plan. To watch the number translate into pacing and fueling decisions across a real day, walk through a 100K aid station by aid station, and compare climbing-specific gear in our gear picks.