diff --git a/CHANGELOG.md b/CHANGELOG.md
index c144b59dd..e22ac0e46 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,7 @@
 
 * Added the `RouteResponse.roadClassViolations` property, which indicates any requested `RouteOptions.roadClassesToAvoid` values that could not be satisfied when calculating the routes. You can use convenience `RouteResponse.exclusionViolations(routeIndex:legIndex:stepIndex:intersectionIndex:)` method to search for a specific item. ([#627](https://github.com/mapbox/mapbox-directions-swift/pull/627))
 * Fixed an issue where `PolyLineString` encoded an invalid GeoJSON LineString. ([#638](https://github.com/mapbox/mapbox-directions-swift/pull/638))
+* Added `RouteRefreshSource` protocol to allow refreshing `Route` objects with `RefreshedRoute` or another `Route` instance. ([#634](https://github.com/mapbox/mapbox-directions-swift/pull/634))
 
 ## v2.1.0
 
diff --git a/MapboxDirections.xcodeproj/project.pbxproj b/MapboxDirections.xcodeproj/project.pbxproj
index 71a013156..b24e6645f 100644
--- a/MapboxDirections.xcodeproj/project.pbxproj
+++ b/MapboxDirections.xcodeproj/project.pbxproj
@@ -76,6 +76,10 @@
 		2BBBD08E257FA1CD004EB3D6 /* BlockedLanes.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2BBBD08C257FA1CD004EB3D6 /* BlockedLanes.swift */; };
 		2BBBD08F257FA1CD004EB3D6 /* BlockedLanes.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2BBBD08C257FA1CD004EB3D6 /* BlockedLanes.swift */; };
 		2BBBD090257FA1CD004EB3D6 /* BlockedLanes.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2BBBD08C257FA1CD004EB3D6 /* BlockedLanes.swift */; };
+		2BF398C527620CD7000C9A72 /* RouteRefreshSource.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2BF398C427620CD7000C9A72 /* RouteRefreshSource.swift */; };
+		2BF398C627620CD7000C9A72 /* RouteRefreshSource.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2BF398C427620CD7000C9A72 /* RouteRefreshSource.swift */; };
+		2BF398C727620CD7000C9A72 /* RouteRefreshSource.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2BF398C427620CD7000C9A72 /* RouteRefreshSource.swift */; };
+		2BF398C827620CD7000C9A72 /* RouteRefreshSource.swift in Sources */ = {isa = PBXBuildFile; fileRef = 2BF398C427620CD7000C9A72 /* RouteRefreshSource.swift */; };
 		35828C9E217A003F00ED546E /* OfflineDirections.swift in Sources */ = {isa = PBXBuildFile; fileRef = 35828C9D217A003F00ED546E /* OfflineDirections.swift */; };
 		35828C9F217A003F00ED546E /* OfflineDirections.swift in Sources */ = {isa = PBXBuildFile; fileRef = 35828C9D217A003F00ED546E /* OfflineDirections.swift */; };
 		35828CA0217A003F00ED546E /* OfflineDirections.swift in Sources */ = {isa = PBXBuildFile; fileRef = 35828C9D217A003F00ED546E /* OfflineDirections.swift */; };
@@ -489,6 +493,7 @@
 		2BA98970253F007600B643F6 /* mapbox-directions-swift */ = {isa = PBXFileReference; explicitFileType = "compiled.mach-o.executable"; includeInIndex = 0; path = "mapbox-directions-swift"; sourceTree = BUILT_PRODUCTS_DIR; };
 		2BBBD05D257E61ED004EB3D6 /* MapboxStreetsRoadClass.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MapboxStreetsRoadClass.swift; sourceTree = "<group>"; };
 		2BBBD08C257FA1CD004EB3D6 /* BlockedLanes.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = BlockedLanes.swift; sourceTree = "<group>"; };
+		2BF398C427620CD7000C9A72 /* RouteRefreshSource.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = RouteRefreshSource.swift; sourceTree = "<group>"; };
 		3556CE9922649CF2009397B5 /* MapboxDirectionsTests-Bridging-Header.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; name = "MapboxDirectionsTests-Bridging-Header.h"; path = "../objc/MapboxDirectionsTests-Bridging-Header.h"; sourceTree = "<group>"; };
 		35828C9D217A003F00ED546E /* OfflineDirections.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = OfflineDirections.swift; sourceTree = "<group>"; };
 		35CC310A2285739700EA1966 /* WalkingOptionsTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = WalkingOptionsTests.swift; sourceTree = "<group>"; };
@@ -824,6 +829,7 @@
 				2B5407EC2451B17E006C820B /* RouteRefreshResponse.swift */,
 				2B5F0DFF273BEB3600CC2C1A /* RoadClassExclusionViolation.swift */,
 				2B5407F12452FA8C006C820B /* RefreshedRoute.swift */,
+				2BF398C427620CD7000C9A72 /* RouteRefreshSource.swift */,
 				43538E3623ED3B1600E010D4 /* ResponseDisposition.swift */,
 				DA2E03E81CB0E0B000D1269A /* RouteStep.swift */,
 				C55FB44A1F6AEBF6006BD1E9 /* SpokenInstruction.swift */,
@@ -1439,6 +1445,7 @@
 				2B9F388A272AE23A001DBA12 /* IsochroneError.swift in Sources */,
 				431E93C823466B4000A71B44 /* CoreLocation.swift in Sources */,
 				AEDC212120B6125C0052DED8 /* VisualInstructionComponent.swift in Sources */,
+				2BF398C627620CD7000C9A72 /* RouteRefreshSource.swift in Sources */,
 				2B9F3886272AE23A001DBA12 /* IsochroneOptions.swift in Sources */,
 				439255792344113D006EEE88 /* DirectionsError.swift in Sources */,
 				DA1A10C71D00F969009F82FA /* Directions.swift in Sources */,
@@ -1532,6 +1539,7 @@
 				2B9F388B272AE23A001DBA12 /* IsochroneError.swift in Sources */,
 				431E93C923466B4100A71B44 /* CoreLocation.swift in Sources */,
 				AEDC212220B6125D0052DED8 /* VisualInstructionComponent.swift in Sources */,
+				2BF398C727620CD7000C9A72 /* RouteRefreshSource.swift in Sources */,
 				2B9F3887272AE23A001DBA12 /* IsochroneOptions.swift in Sources */,
 				4392557A2344113E006EEE88 /* DirectionsError.swift in Sources */,
 				DA1A10ED1D010247009F82FA /* Directions.swift in Sources */,
@@ -1625,6 +1633,7 @@
 				2B9F388C272AE23A001DBA12 /* IsochroneError.swift in Sources */,
 				431E93CA23466B4200A71B44 /* CoreLocation.swift in Sources */,
 				AEDC212320B6125E0052DED8 /* VisualInstructionComponent.swift in Sources */,
+				2BF398C827620CD7000C9A72 /* RouteRefreshSource.swift in Sources */,
 				2B9F3888272AE23A001DBA12 /* IsochroneOptions.swift in Sources */,
 				4392557B2344113F006EEE88 /* DirectionsError.swift in Sources */,
 				DA1A11041D0103A3009F82FA /* Directions.swift in Sources */,
@@ -1684,6 +1693,7 @@
 				2B9F3889272AE23A001DBA12 /* IsochroneError.swift in Sources */,
 				431E93C723466B3F00A71B44 /* CoreLocation.swift in Sources */,
 				AEDC211D20B6104B0052DED8 /* VisualInstructionComponent.swift in Sources */,
+				2BF398C527620CD7000C9A72 /* RouteRefreshSource.swift in Sources */,
 				2B9F3885272AE23A001DBA12 /* IsochroneOptions.swift in Sources */,
 				439255772344113B006EEE88 /* DirectionsError.swift in Sources */,
 				DA2E03E91CB0E0B000D1269A /* RouteStep.swift in Sources */,
diff --git a/Sources/MapboxDirections/RouteRefreshResponse.swift b/Sources/MapboxDirections/RouteRefreshResponse.swift
index 9856d1a06..60baa16ca 100644
--- a/Sources/MapboxDirections/RouteRefreshResponse.swift
+++ b/Sources/MapboxDirections/RouteRefreshResponse.swift
@@ -99,9 +99,9 @@ extension Route {
      
      - parameter refreshedRoute: The route containing leg attributes to merge into the receiver. If this route contains fewer legs than the receiver, this method skips legs from the beginning of the route to make up the difference, so that merging the attributes from a one-leg route affects only the last leg of the receiver.
      */
-    public func refreshLegAttributes(from refreshedRoute: RefreshedRoute) {
-        for (leg, refreshedLeg) in zip(legs.suffix(refreshedRoute.legs.count), refreshedRoute.legs) {
-            leg.attributes = refreshedLeg.attributes
+    public func refreshLegAttributes(from refreshedRoute: RouteRefreshSource) {
+        for (leg, refreshedLeg) in zip(legs.suffix(refreshedRoute.refreshedLegs.count), refreshedRoute.refreshedLegs) {
+            leg.attributes = refreshedLeg.refreshedAttributes
         }
     }
 }
diff --git a/Sources/MapboxDirections/RouteRefreshSource.swift b/Sources/MapboxDirections/RouteRefreshSource.swift
new file mode 100644
index 000000000..51df30629
--- /dev/null
+++ b/Sources/MapboxDirections/RouteRefreshSource.swift
@@ -0,0 +1,37 @@
+import Foundation
+
+/**
+ A skeletal route containing infromation to refresh `Route` object attributes.
+ */
+public protocol RouteRefreshSource {
+    var refreshedLegs: [RouteLegRefreshSource] { get }
+}
+
+/**
+ A skeletal route leg containing infromation to refresh `RouteLeg` object attributes.
+ */
+public protocol RouteLegRefreshSource {
+    var refreshedAttributes: RouteLeg.Attributes { get }
+}
+
+extension Route: RouteRefreshSource {
+    public var refreshedLegs: [RouteLegRefreshSource] {
+        legs
+    }
+}
+extension RouteLeg: RouteLegRefreshSource {
+    public var refreshedAttributes: Attributes {
+        attributes
+    }
+}
+
+extension RefreshedRoute: RouteRefreshSource {
+    public var refreshedLegs: [RouteLegRefreshSource] {
+        legs
+    }
+}
+extension RefreshedRouteLeg: RouteLegRefreshSource {
+    public var refreshedAttributes: RouteLeg.Attributes {
+        attributes
+    }
+}