diff --git a/removed_sites.json b/removed_sites.json
index ba10573d..0e6a9730 100644
--- a/removed_sites.json
+++ b/removed_sites.json
@@ -549,6 +549,14 @@
     "urlMain": "https://gdprofiles.com/",
     "username_claimed": "blue",
     "username_unclaimed": "noonewouldeverusethis"
+  },
+  "AllTrails": {
+    "errorMsg": "class=\"home index\"",
+    "errorType": "message",
+    "url": "https://www.alltrails.com/members/{}",
+    "urlMain": "https://www.alltrails.com/",
+    "username_claimed": "blue",
+    "username_unclaimed": "noonewouldeverusethis"
   }
 }
 
diff --git a/removed_sites.md b/removed_sites.md
index d225040c..a9706de1 100644
--- a/removed_sites.md
+++ b/removed_sites.md
@@ -1082,3 +1082,17 @@ As of 2021-06-27, GDProfiles takes way too long to respond. Must be an issue on
     "username_unclaimed": "noonewouldeverusethis"
   },
 ```
+
+## AllTrails
+
+As of 2021-06-27, AllTrails has a chapta which prevents us from checking for usernames on the site.
+```
+  "AllTrails": {
+    "errorMsg": "class=\"home index\"",
+    "errorType": "message",
+    "url": "https://www.alltrails.com/members/{}",
+    "urlMain": "https://www.alltrails.com/",
+    "username_claimed": "blue",
+    "username_unclaimed": "noonewouldeverusethis"
+  }
+```
diff --git a/sherlock/resources/data.json b/sherlock/resources/data.json
index 0873175e..1a81c345 100644
--- a/sherlock/resources/data.json
+++ b/sherlock/resources/data.json
@@ -51,7 +51,7 @@
     "username_unclaimed": "noonewouldeverusethis"
   },
   "AllTrails": {
-    "errorMsg": "User could not be found.",
+    "errorMsg": "class=\"home index\"",
     "errorType": "message",
     "url": "https://www.alltrails.com/members/{}",
     "urlMain": "https://www.alltrails.com/",