Overlays provide a wealth of additional information to help you plan your next adventure.
Overlays can be found by tapping on the 'Overlays' button in the lower right corner of any map view screen (look for the icon with two overlapping squares).
You can access overlays by following these steps:
Via desktop or laptop computer:
- Log in to your account on https://www.alltrails.com
- Select a trail card or personal map/activity
- If on a trail details page, select the static map of the trail (on the right hand side). If on a activity or map details page, select the map where your route is displayed (the right side of the screen)
- Select the 'Overlays' button. It is above 'Map Layers' on the bottom right corner of the map
- Select the overlay you are interested in (it will display green).
- Click 'Apply' and It will then be applied to the map
Via iPhone or Android app:
- Log into your account
- Select a trail card or personal map/activity
- If on a trail or activity details page, scroll down to the map section and click 'View Full Map'. If on a map details page, your map will immediately be displayed.
- In the bottom right corner of the map screen you will see the 'Overlays' button (it is above 'Map layers')
- Select the overlay you are interested in (it will display green) then tap the green back arrow (Android) or 'X' (iPhone) and it will be applied to your map
There are four map overlays available to all members:
Photos - Displays geotagged photos on the map so you can see what to expect on the trail.
Waypoints - Displays geotagged waypoints across the trail map so you can find landmarks, attractions, junctions, trailheads, etc.
Nearby Trails - Drops map pins for nearby trailheads so you can see other trails in the area as well as other access points.
Distance Markers - Displays mileage markers in miles or kilometers (based on your unit preference) along any route. *Only available at alltrails.com and not on the mobile apps.
In addition, there are five real-time overlays that are exclusive to Pro members:
Heatmap - Visualizes all the user activity tied to any trail. Easily find the most popular routes or less-traveled paths that other community members have taken.
Weather - Displays real-time satellite and radar weather data over any map layer.
Air Quality - Displays a real-time air quality index over any map layer. Color coded with green indicating the cleanest air and red indicating the most polluted.
Pollen - Displays a daily forecast of pollen levels over any map layer in the U.S. and Europe. The overlay is color coded with green indicating the lowest concentration of pollen and red indicating the highest concentration. Great for people with seasonal allergies!
Light Pollution - Displays a color coded overlay of excessive nighttime artificial light sources worldwide over any map layer. Areas displayed in red show the most light polluted areas while green shows the least polluted. This layer gives you insight into whether or not you’ll be able to see stars at night!