You reach a fork on a wooded trail. A white rectangle is painted on a tree ahead, with a second one just above it.
That pair of marks warns of a turn or a tricky junction. Slow down and look for the next blaze, and if the top mark sits off to one side, the trail usually turns that way.
The basics are simple to learn, though colors and patterns vary from park to park and trail club to trail club.
What Trail Markers Do and Why They Matter
Trail markers, blazes, cairns, and signs guide you through the terrain and help you stay on course. They show you which direction to follow.
Markers matter most exactly where you’re likely to second-guess yourself: at junctions, in poor visibility, and where the path fades into the ground.
You’ll find them at decision points, tricky sections, and at intervals along quieter stretches. Along with the basics in tips for a perfect hike, they help keep you on the route, along with a map.
Read the trailhead board before you start. It often shows the trail map and its markers, so take a photo of it with your phone.
Five Main Types of Trail Markers You’ll Encounter
Not all markers are paint. You’ll run into five main types:
- Paint blazes: marks painted on trees and rocks
- Cairns: stacked rocks that mark the route across open rock, where there are no trees to paint
- Posts: wooden or metal posts, useful where trees are sparse
- Affixed markers: metal, plastic, or wood tags fastened to trees, which outlast paint
- Flagging tape: brightly colored and temporary, used for maintenance or reroutes
How to Read Paint Blazes: Straight, Turns, and Intersections
Blaze systems vary, but one convention shows up often. On one Blue Ridge Parkway trail, the National Park Service says a single blaze means straight ahead and a double blaze means a turn.
Treat a double blaze as a prompt, not a destination. It tells you a change is coming, so slow down and look for the next mark.
Some trails offset the pair. The Appalachian Trail Conservancy’s marking guide says the upper blaze of an offset pair shows the direction of the change.
Other clubs stack the two in line, which tells you only that a turn is near.
If you lose the blazes, go back to the last one you passed. It shows you where the trail was heading.
What Trail Marker Colors Actually Mean
On many trails, color tells you which trail you’re on. Direction comes from the blaze pattern, not the color.
Here is how that looks on one trail. The Humpback Rocks trail is marked with blue blazes, and it may be marked in white where it shares a path with the Appalachian Trail.
A color means whatever that park or club assigns it, so one color never means the same thing everywhere.
At junctions where two trails cross, seeing two colors at once is normal. Keep following your trail’s color, and check the map on shared stretches, where your trail may carry the other trail’s blazes.
The guide to choosing your first hiking trail helps you pick a route before you go.
Beyond Paint: Cairns, Posts, and Rock Stacks
Where there’s nothing to paint, such as open rock, cairns take over. Some are official route markers built by the land manager.
The National Park Service says if you come across a cairn, do not disturb it. Don’t knock it down or add to it, since a moved cairn can send the next hiker the wrong way.
Affixed markers appear on trails that see regular maintenance.
Trail Marker Patterns at Forks and Junctions
Junctions are a common place to go wrong.
At a junction, check the blazes and your map before you pick a branch.
At a fork, watch for:
- Double blaze. On a tree just before the split
- Reverse blazes. Facing the other way, they mark the same trail for hikers coming from the other direction
- Cairn, post or sign. Beside one branch where the route follows open rock
If you’re unsure at a fork, walk along one option only while the junction stays in sight, and look for the next blaze. The right path will usually show one quickly.
If it doesn’t, go back to the junction and try the other branch.
What to Do When Trail Markers Disappear
Losing sight of markers happens, even to experienced hikers. It’s not necessarily cause for alarm.
Stop moving first. Standing still costs you nothing, while walking the wrong way can cost you twice.
Then work through a short list:
- Look around for the last landmark you recognize: a distinctive tree, a ridge line, a rock formation
- If it is safe, retrace your steps to the last marker you remember clearly
- Pull out your map or phone and confirm where you are relative to the trail
- If you’re hiking with someone, compare what you’ve each noticed
Carry a physical map as a backup and an extra phone battery, as the park service’s ten essentials advise.
If you can’t retrace your steps, the park service’s outdoor emergency plan says to call 911 and stay put. Moving makes you harder to find. Blow a whistle three times, rest, and repeat.
Telling someone your route before you leave means they know where to look.
Respecting Trail Markers: What Not to Do
The marker system works because land managers and trail clubs maintain it, and hikers leave it alone.
What to avoid:
- Official blazes. Painting over, removing, or damaging them
- Flagging tape. Placing it near official markers, which creates doubt about which one to follow
- New cairns. Building ones that weren’t placed by the land manager
The hikers behind you will be relying on the markers you leave alone.