Distance is the number people plan around and it is the wrong one. A six-mile hike with four thousand feet of climbing takes considerably longer than a ten-mile walk along a river, and planning by mileage alone is how people end up finishing in the dark.
The useful planning unit is time, and estimating it means accounting for elevation, terrain, and your own pace rather than reading a distance off a map. Our note on compasses for hiking covers getting the elevation figure.
A Safety Note
Route planning does not replace judgment on the day. Weather, conditions, and how the group is actually moving matter more than the plan, and turning back is always available. Tell someone your route and expected return time before you leave, and let them know when you are back.
Quick Answer
Estimate time rather than distance, add for elevation gain, then add margin for the group and conditions. Identify escape routes and a turnaround time before you start walking.
Estimating Time Properly
A long-standing rule of thumb allows roughly three miles per hour on level ground, plus an additional half hour for every thousand feet of ascent. It originated in Scottish hillwalking and remains a reasonable starting point.
That figure describes a fit walker on reasonable ground carrying a light pack in good conditions. Groups, children, heavy packs, poor weather, and difficult terrain all slow it down, sometimes by a considerable margin rather than a little.
The honest approach is calibrating against your own past hikes rather than trusting the formula. Time a few walks you know and work out your actual rate, then use that.
Descent is not free either. Steep downhill is slower than flat ground and harder on knees, which affects the back half of an out-and-back more than people expect. Our roundup of trekking poles covers reducing that load.
Elevation Is the Variable That Matters
Total ascent, not the difference between start and summit, is what costs time. A route that climbs and descends repeatedly accumulates far more elevation gain than its endpoints suggest.
Contour lines give you this figure. Counting the lines crossed on every ascent, multiplied by the contour interval printed in the legend, produces the total, and most mapping software calculates it for you directly.
Sustained steep sections are also considerably harder than the same total gain spread out gently, so two routes with identical ascent figures can feel completely different on the day. Contour spacing is what tells you which of the two you are looking at.
Build the Route Around Fixed Points
Start and finish
Parking availability, transport, and whether the route is a loop, an out-and-back, or a point-to-point that needs a shuttle or a second vehicle arranged in advance.
Water sources
Marked on topographic maps, and dashed blue lines indicate seasonal or intermittent flow. Never plan around a water source you have not confirmed is actually running, particularly late in a dry summer.
Escape routes
Points where you can cut the route short and reach a road or trailhead. Identifying these in advance turns a bad day into a shorter day.
Decision points
Places where you commit to continuing, each with a time attached to it. Arriving at one later than planned means taking the escape route rather than pressing on and hoping to make the time up.
Matching the Route to the Group
A route is planned for the slowest person in the group, not the average and certainly not the fastest. Groups move at the pace of whoever is struggling, and a plan built on anyone else’s pace produces a day where someone is under pressure the whole way.
Group size itself slows things. More people means more stops, more time regrouping at junctions, and more variation in how quickly everyone eats or adjusts gear. A party of six moves noticeably slower than a party of two on identical terrain.
Children and less experienced walkers change the calculation more than fitness alone suggests, since the limiting factor is often attention and morale rather than legs. Shorter objectives with something to look at beat long routes with a view at the end.
The honest test is whether the least experienced person in the group would choose this route knowing what it involves. If the answer depends on them not knowing, the route is wrong for the group. Our roundup of hiking boots for beginners covers equipping someone new.
Turnaround Times Beat Optimism
Setting a time at which you turn back regardless of how close the objective feels is the single most useful planning habit available, and it works precisely because the decision gets made before the summit is in sight and judgment is at its worst.
Work backward from sunset, subtract your descent estimate, add a buffer, and that is your turnaround. Writing it down makes it harder to argue with later.
Most incidents in the hills involve people continuing past the point where they should have turned, usually because the objective was close and the cost of stopping felt higher than it was.
Our roundup of headlamps covers what you carry for when it goes wrong anyway.
Weather and Season Change the Plan
Daylight is the constraint that catches people out most often, and it changes dramatically across the year. A route that finishes comfortably in the evening light of June becomes a headlamp descent in October.
Conditions underfoot matter as much as forecast. Wet rock, mud, and snow all slow progress substantially, and a route timed in summer does not transfer to spring.
Wind and exposure matter on ridges specifically, where a forecast that seems mild at valley level can be genuinely difficult higher up. Mountain forecasts differ from town forecasts for this reason.
Our roundup of rain jackets covers being ready for it.
Tell Someone
Leaving a route plan with someone who will notice you are late is the cheapest safety measure available and the most frequently skipped.
It should include the route itself, the trailhead you are starting from, a description of your vehicle, the expected return time, and the point at which they should raise the alarm. Vague information helps nobody and wastes time in a search.
Then actually tell them when you are back, since a search launched for someone who finished early and went for a meal is a real and entirely avoidable outcome that happens more often than it should.
Our roundup of satellite messengers covers communicating from beyond signal.
Route Planning FAQ
How long will my hike take?
Estimate roughly three miles per hour on level ground plus half an hour per thousand feet of ascent, then adjust for your own pace, group size, pack weight, and conditions. Calibrating against hikes you have already done beats any formula.
Why is distance a poor planning measure?
Because elevation and terrain change the time enormously. Six miles with heavy climbing takes longer than ten flat miles, and planning by mileage is how people finish in the dark.
What is total ascent?
The sum of all climbing on the route, not the difference between the lowest and highest points. A rolling route accumulates far more than its endpoints suggest, and it is the figure that predicts time.
What is a turnaround time?
A time at which you head back regardless of how close the objective is, worked out from sunset minus your descent estimate plus a buffer. Deciding it in advance removes the judgment from the moment when it is hardest.
How do I plan for water?
Mark sources on the map and treat dashed blue lines as seasonal rather than reliable. Never plan around a source you have not confirmed, and carry enough to reach the next confirmed one.
What are escape routes?
Points where you can cut the route short and reach a road or trailhead quickly. Identifying them beforehand means a deteriorating day becomes a shorter day rather than a committing one.
Should I plan differently in winter?
Considerably. Daylight is much shorter, conditions underfoot slow progress substantially, and the same route can take far longer than its summer timing. Winter routes need more margin, not the same margin.
Who should I tell about my plan?
Someone who will notice you are late and knows what to do. Give them the route, trailhead, vehicle, expected return, and when to raise the alarm, and tell them when you are safely back.
Recommended Reading
See our note on base layers for winter hiking, and bug repellent for hiking, and compression socks for hiking, and hand warmers for cold weather hiking, and hiking backpacks under 100, and hiking daypacks, and hiking flashlights, and hiking gaiters, and hiking gloves, and hiking hats for sun protection, and hiking headbands and buffs, and hiking knee braces, and electrolyte tablets for hiking, and energy gels and chews for hiking, and hiking pants for men and women, and hiking poles for women, and hiking sandals for summer trails, and hiking shoes for plantar fasciitis, and hiking shoes for travel, and hiking shoes for wide feet, and hiking shoes for women, and hiking snacks trail food, and hiking socks, and hiking towels.
