diff --git a/NuGet.config b/NuGet.config
index 1707938c61..03704957e8 100644
--- a/NuGet.config
+++ b/NuGet.config
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <configuration>
   <packageSources>
     <add key="AspNetVNext" value="https://www.myget.org/F/aspnetcidev/api/v3/index.json" />
diff --git a/src/Microsoft.AspNet.Routing/RouteData.cs b/src/Microsoft.AspNet.Routing/RouteData.cs
index 4d734e3fb4..dbc4da9d6b 100644
--- a/src/Microsoft.AspNet.Routing/RouteData.cs
+++ b/src/Microsoft.AspNet.Routing/RouteData.cs
@@ -11,14 +11,16 @@ namespace Microsoft.AspNet.Routing
     /// </summary>
     public class RouteData
     {
+        private Dictionary<string, object> _dataTokens;
+        private RouteValueDictionary _values;
+
         /// <summary>
         /// Creates a new <see cref="RouteData"/> instance.
         /// </summary>
         public RouteData()
         {
-            DataTokens = new Dictionary<string, object>(StringComparer.OrdinalIgnoreCase);
+            // Perf: Avoid allocating DataTokens and RouteValues unless needed.
             Routers = new List<IRouter>();
-            Values = new RouteValueDictionary();
         }
 
         /// <summary>
@@ -32,24 +34,55 @@ namespace Microsoft.AspNet.Routing
                 throw new ArgumentNullException(nameof(other));
             }
 
-            DataTokens = new Dictionary<string, object>(other.DataTokens, StringComparer.OrdinalIgnoreCase);
             Routers = new List<IRouter>(other.Routers);
-            Values = new RouteValueDictionary(other.Values);
+            
+            // Perf: Avoid allocating DataTokens and RouteValues unless we need to make a copy.
+            if (other._dataTokens != null)
+            {
+                _dataTokens = new Dictionary<string, object>(other._dataTokens, StringComparer.OrdinalIgnoreCase);
+            }
+
+            if (other._values != null)
+            {
+                _values = new RouteValueDictionary(other._values);
+            }
         }
 
         /// <summary>
         /// Gets the data tokens produced by routes on the current routing path.
         /// </summary>
-        public IDictionary<string, object> DataTokens { get; private set; }
+        public IDictionary<string, object> DataTokens
+        {
+            get
+            {
+                if (_dataTokens == null)
+                {
+                    _dataTokens = new Dictionary<string, object>(StringComparer.OrdinalIgnoreCase);
+                }
+
+                return _dataTokens;
+            }
+        }
 
         /// <summary>
         /// Gets the list of <see cref="IRouter"/> instances on the current routing path.
         /// </summary>
-        public List<IRouter> Routers { get; private set; }
+        public List<IRouter> Routers { get; }
 
         /// <summary>
         /// Gets the set of values produced by routes on the current routing path.
         /// </summary>
-        public IDictionary<string, object> Values { get; private set; }
+        public IDictionary<string, object> Values
+        {
+            get
+            {
+                if (_values == null)
+                {
+                    _values = new RouteValueDictionary();
+                }
+
+                return _values;
+            }
+        }
     }
 }
\ No newline at end of file
diff --git a/src/Microsoft.AspNet.Routing/Template/TemplateRoute.cs b/src/Microsoft.AspNet.Routing/Template/TemplateRoute.cs
index 19f87ebe6a..0f8988ec1a 100644
--- a/src/Microsoft.AspNet.Routing/Template/TemplateRoute.cs
+++ b/src/Microsoft.AspNet.Routing/Template/TemplateRoute.cs
@@ -133,7 +133,14 @@ namespace Microsoft.AspNet.Routing.Template
             var oldRouteData = context.RouteData;
 
             var newRouteData = new RouteData(oldRouteData);
-            MergeValues(newRouteData.DataTokens, _dataTokens);
+
+            // Perf: Avoid accessing data tokens if you don't need to write to it, these dictionaries are all
+            // created lazily.
+            if (_dataTokens.Count > 0)
+            {
+                MergeValues(newRouteData.DataTokens, _dataTokens);
+            }
+
             newRouteData.Routers.Add(_target);
             MergeValues(newRouteData.Values, values);