diff --git a/CHANGELOG.markdown b/CHANGELOG.markdown
index 92819499d5..8a12bc8ac7 100644
--- a/CHANGELOG.markdown
+++ b/CHANGELOG.markdown
@@ -7,6 +7,7 @@
 * [#295](https://github.com/intridea/grape/issues/295): Storing original API source block in endpoint's `source` attribute - [@dblock](https://github.com/dblock).
 * [#298](https://github.com/intridea/grape/pull/298): Fix: subsequent calls to `body_params` would fail due to IO read - [@justinmcp](https://github.com/justinmcp).
 * [#301](https://github.com/intridea/grape/issues/301): Fix: symbol memory leak in cookie and formatter middleware - [@dblock](https://github.com/dblock).
+* [#300](https://github.com/intridea/grape/issues/300): Fix Grape::API.routes to include mounted api routes - [@aiwilliams](https://github.com/aiwilliams).
 * Your contribution here.
 
 0.2.3 (24/12/2012)
diff --git a/lib/grape/endpoint.rb b/lib/grape/endpoint.rb
index 0237a8d670..90fee53a28 100644
--- a/lib/grape/endpoint.rb
+++ b/lib/grape/endpoint.rb
@@ -56,12 +56,12 @@ def initialize(settings, options = {}, &block)
     end
 
     def routes
-      @routes ||= prepare_routes
+      @routes ||= endpoints ? endpoints.collect(&:routes).flatten : prepare_routes
     end
 
     def mount_in(route_set)
-      if options[:app] && options[:app].respond_to?(:endpoints)
-        options[:app].endpoints.each{|e| e.mount_in(route_set)}
+      if endpoints
+        endpoints.each{|e| e.mount_in(route_set)}
       else
         routes.each do |route|
           route_set.add_route(self, {
@@ -347,6 +347,16 @@ def route
 
     protected
 
+    # Return the collection of endpoints within this endpoint.
+    # This is the case when an Grape::API mounts another Grape::API.
+    def endpoints
+      if options[:app] && options[:app].respond_to?(:endpoints)
+        options[:app].endpoints
+      else
+        nil
+      end
+    end
+
     def run(env)
       @env = env
       @header = {}
diff --git a/spec/grape/api_spec.rb b/spec/grape/api_spec.rb
index 969d3af1e3..72da6eb775 100644
--- a/spec/grape/api_spec.rb
+++ b/spec/grape/api_spec.rb
@@ -1399,6 +1399,18 @@ def self.call(object, env)
         last_response.status.should eql 202
         last_response.body.should == 'rescued from doh!'
       end
+
+      it 'collects the routes of the mounted api' do
+        subject.namespace :cool do
+          app = Class.new(Grape::API)
+          app.get('/awesome') {}
+          app.post('/sauce') {}
+          mount app
+        end
+        subject.routes.size.should == 2
+        subject.routes.first.route_path.should =~ /\/cool\/awesome/
+        subject.routes.last.route_path.should =~ /\/cool\/sauce/
+      end
     end
   end