The descent is the dangerous half

You plan the ascent. You rehearse the ascent. You look at the map for the ascent. And then you do the descent tired, late, on the same worn rock, with your concentration gone — having planned none of it.

That sentence needs no statistic to be true. But it turns out the numbers agree, and so does your own physiology. This is what the evidence actually shows about coming down — and what to do about it.

1. What the evidence shows — and its limits

Start with the honest position, because it is not what people assume. No UK mountain-rescue body publishes a breakdown of incidents by whether the casualty was going up or coming down. MREW, the Lake District teams and Scottish Mountain Rescue classify call-outs by cause, by month, by injury — but not by phase of the walk (our Mountain Rescue Report (opens in new tab)). So anyone who tells you “most Lakeland accidents happen on the descent” is guessing.

The research literature, however, has looked. In the largest published study — 5,517 fall casualties over nine years in the Austrian Alps — 75% of falls happened during the descent, against 20% on the ascent (Faulhaber et al., BMJ Open Sport & Exercise Medicine, 2017 (opens in new tab); the same finding restated in the German Journal of Sports Medicine, 2020 (opens in new tab)). It is the largest such breakdown published anywhere — and it rather stands alone, because even in dedicated research the phase of the walk often goes unrecorded (a 405-fall Tyrol study, 2020, did not capture ascent versus descent at all (opens in new tab)).

Read that figure carefully. It counts falls, not every kind of incident — a heart attack or a navigation error is a different thing. It is Austrian, not British. And crucially it is an event count, not a risk rate: on an out-and-back walk you spend roughly as long going up as coming down, so the count tells you where falls happen, not that any given minute of descent is precisely X times riskier than a minute of ascent. What it does establish is that most recorded falls happen on the way down — which is exactly the part of the day people plan least. We will not stretch it further than that.

2. Why your body finds down harder than up

Going up is hard work for your heart and lungs. Going down is hard work for your muscles, joints and balance — and that is the part that ends days badly.

Your thighs are braking, not driving

On the way down, the big muscles on the front of your thigh contract while they are lengthening — an eccentric, braking contraction that holds you back against gravity, step after step. Eccentric work causes far more microscopic muscle damage than the shortening contractions of going up, which is why a big descent tends to leave your legs sorer two days later than a comparable climb (Proske & Morgan, Journal of Physiology, 2001 (opens in new tab)).

Your knees take more load

Downhill walking raises the compressive forces through the knee well above level or uphill walking (Alexander & Schwameder, Gait & Posture, 2016 (opens in new tab)). One older modelling study put the peak tibiofemoral force at roughly eight times body weight downhill against under four times on the flat — treat that exact multiple as illustrative rather than gospel, because it is a single model on one steep slope (Kuster et al., 1997 (opens in new tab)), but the direction is not in doubt.

Your balance quietly leaves

Here is the part few people know. After a sustained descent your legs stay sore for a day or two, and your balance and coordination stay degraded for hours after you are down — and in one study the loss of balance happened even when the leg muscles still tested as strong (Werner et al., 2023 (opens in new tab); Hill et al., Frontiers in Physiology, 2020 (opens in new tab)). So the lazy line — “your quads get tired and you fall” — is only half right. Your sense of where your feet are goes too. That is why the last, easy-looking mile catches people.

3. Do poles help?

On the evidence, yes — enough to carry them for a serious descent. In a field trial, walkers using poles held on to more of their leg strength and had less soreness and lower muscle-damage markers over the next two days (Howatson et al., Medicine & Science in Sports & Exercise, 2011 (opens in new tab)); on a steep ramp, poles cut knee loading by roughly 12–25% (Schwameder et al., 1999 (opens in new tab)).

The honest limit: in that ramp study the load reduction specifically on the kneecap joint did not reach statistical significance. So “poles save your knees” is well-supported for muscle damage, and weaker for the kneecap itself. Carry them, plant them early on the steep ground, and don’t treat them as armour.

4. The day runs out on the way down

The other reason the descent is where it goes wrong is simple arithmetic: you climb with fresh legs and full daylight, and you come down with neither. And walkers under-budget the day at the start.

Our own route times already build in a +15% uplift over the raw walking calculation, because that raw figure — the standard Naismith estimate — runs optimistic. Add a steady rather than brisk pace and a ‘5-hour’ route is realistically closer to seven hours for most people. Start at 10am and that is a finish near 5pm — before you allow for photos, lunch, a slow section, or a wrong turn. Every route page carries a latest-safe-start readout that does this sum against the actual daylight for the day; this is the reason it exists.

5. Which Lake District descents will actually hurt

This is the part nobody else can give you. We compute the steepest sustained descent on every one of our routes, and it is already the Knees verdict you see on each route page. Here are the sharpest of them; the full set is a download.

**The steepest sustained descents on the routes we publish.** Our `descent_max_pct` figure — the steepest sustained gradient you descend — on all 152 routes. It is the same number as the **Knees** verdict on every route page (green ≤18%, amber 18–30%, red >30%). The full table for all 152 routes is downloadable as a CSV.
Route	Steepest descent	Knees
Extended Mosedale Horseshoe	63%	Red
Ullscarf, Eagle Crag & Sergeant's Crag	57%	Red
Helvellyn & Nethermost Pike via Seat Sandal	56%	Red
Middle Dodd Little Hart Crag and High Hartsop Dodd	56%	Red
Allan Crags & Glaramara	55%	Red
Great Gable & Kirk Fell	52%	Red
Cofra Pike Via Seat Sandal and Dollywaggon	51%	Red
Great Gable from Honister Slate Mine	50%	Red
Langdale Pikes Round	49%	Red
High Snockrigg, Eel Crag & Lad Hows	47%	Red
Scar Crags, Causey Pike	47%	Red
Seathwaite, Green Gable, Base Brown	47%	Red

Across all 152 routes: 77 red, 39 amber, 36 green. “Red” is not a warning that a route is unsafe — it means the descent has a stretch steep enough that tired knees, wet rock or fading light will be felt. Plan for it.

I almost died on this fell. Having bagged Helvellyn in the worst weather I have ever been out in, I tried to find my way off Dollywaggon Pike past Grisedale Tarn — and my watch’s GPS was so slow to respond that I had no idea which way I was heading. What saved me was checking, on the way up, that I’d downloaded the OS map to my phone. I used it to retrace my steps, get down the scree to the tarn, and make for Seat Sandal. Trudging through the bog by the tarn, I’d decided that was that.

— Lee, from his own notes on Dollywaggon Pike. The summit was never the problem. Getting off it, tired and disoriented in cloud, was.

6. What to actually do

Set your turn-back time before you set off — and keep it. This is the whole piece in one line. Pick the latest moment you will turn round whether or not you have made the top, and honour it even when the summit is right there.

Budget the descent honestly. Our route times carry a +15% uplift for a reason; treat a “5-hour” route as a seven-hour day and start early.

Know which descents bite. Check the Knees verdict on the route page — a red band means a stretch steep enough that tired legs, wet rock or dusk will be felt.

Carry poles for the big descents, and get them out before the steep ground, not after your knees start complaining.

Respect the last easy mile. Your balance is quietly worse than it was at the top, even if your legs feel fine — and the easy-looking ground catches people precisely because that is where concentration drops. Watch for polished rock: on popular fells, generations of boots wear the holds pale and smooth, worst on the steep steps everyone uses, and it is slicker than it looks whether wet or dry.

Go deeper: our Mountain Rescue Report (what actually goes wrong, in numbers) and walking in bad weather — including when to cancel.

Frequently asked questions

Is the descent really more dangerous than the ascent?

In the largest published study, roughly three-quarters of hiker falls happened on the way down (about 75% in a 9-year Austrian dataset of over 5,000 fall casualties). That is a real, measured clustering — not just the obvious point that a slip downhill carries more energy. Two honest caveats: it counts falls, not every kind of incident, and it is overseas — no UK rescue body publishes an ascent-versus-descent split. And because you spend roughly equal time going up and coming down, the count shows where falls happen, not a precise per-hour risk. The mechanism, though, is not in doubt.

Source: BMJ Open Sport & Exercise Medicine (Faulhaber 2017) (opens in new tab)

Why is walking downhill so much harder on the knees?

Going down, your thigh muscles work eccentrically — contracting while lengthening, to brake you against gravity — and that kind of work causes far more muscle damage and next-day soreness than the concentric work of going up. Downhill walking also raises the compressive forces through the knee well above level or uphill walking. And after a long descent your balance and coordination degrade for hours — in one study that happened even when the muscles themselves tested as strong, so it is partly your sense of position going, not just tired legs.

Source: Journal of Physiology (Proske & Morgan 2001) (opens in new tab) · Frontiers in Physiology (Hill 2020) (opens in new tab)

Do walking poles actually help on the descent?

Yes, on the evidence. In a field trial, walkers using poles kept more of their leg strength and had less muscle soreness and lower muscle-damage markers over the following days; on a steep ramp, poles cut knee loading by roughly 12–25%. One honest limit: the reduction in load specifically on the kneecap (patellofemoral) joint did not reach statistical significance, so “poles save your knees” is truer for muscle damage than for the kneecap itself. Worth carrying for a big descent.

Source: Medicine & Science in Sports & Exercise (Howatson 2011) (opens in new tab)

What is the single most useful thing I can do?

Decide your turn-back time before you set off, and keep it. Almost every day that ends in trouble is a day that ran late: the descent done tired, in the dark, on the same ground you climbed with fresh legs and full daylight. Our route times already carry a built-in +15% uplift over the raw calculation because that raw figure runs optimistic — a ‘5-hour’ route is realistically closer to seven for a steady walker. Budget the descent honestly, and turn round on time even when the summit is close.

Which Lake District descents are the steepest?

From our own per-route data, the steepest sustained descents are off the Ullscarf–Eagle Crag–Sergeant's Crag round (about 57%), the Langdale Pikes round (49%), the Honister-to-Keswick traverse (46%), St Sunday Crag (44%), Scope End and the Scafell Pike Wasdale route (43%), and the Grasmoor round (42%). Every route page carries this as its “Knees” verdict, and the full table is downloadable as a CSV.