diff --git a/goldens/public-api/router/index.md b/goldens/public-api/router/index.md
index dcd37d85803..5e8d26c2bf4 100644
--- a/goldens/public-api/router/index.md
+++ b/goldens/public-api/router/index.md
@@ -86,6 +86,8 @@ export class ActivationEnd {
     snapshot: ActivatedRouteSnapshot;
     // (undocumented)
     toString(): string;
+    // (undocumented)
+    readonly type = EventType.ActivationEnd;
 }
 
 // @public
@@ -96,6 +98,8 @@ export class ActivationStart {
     snapshot: ActivatedRouteSnapshot;
     // (undocumented)
     toString(): string;
+    // (undocumented)
+    readonly type = EventType.ActivationStart;
 }
 
 // @public
@@ -139,6 +143,8 @@ export class ChildActivationEnd {
     snapshot: ActivatedRouteSnapshot;
     // (undocumented)
     toString(): string;
+    // (undocumented)
+    readonly type = EventType.ChildActivationEnd;
 }
 
 // @public
@@ -149,6 +155,8 @@ export class ChildActivationStart {
     snapshot: ActivatedRouteSnapshot;
     // (undocumented)
     toString(): string;
+    // (undocumented)
+    readonly type = EventType.ChildActivationStart;
 }
 
 // @public
@@ -194,9 +202,45 @@ export class DefaultUrlSerializer implements UrlSerializer {
 export type DetachedRouteHandle = {};
 
 // @public
-type Event_2 = RouterEvent | RouteConfigLoadStart | RouteConfigLoadEnd | ChildActivationStart | ChildActivationEnd | ActivationStart | ActivationEnd | Scroll;
+type Event_2 = RouterEvent | NavigationStart | NavigationEnd | NavigationCancel | NavigationError | RoutesRecognized | GuardsCheckStart | GuardsCheckEnd | RouteConfigLoadStart | RouteConfigLoadEnd | ChildActivationStart | ChildActivationEnd | ActivationStart | ActivationEnd | Scroll | ResolveStart | ResolveEnd;
 export { Event_2 as Event }
 
+// @public
+export const enum EventType {
+    // (undocumented)
+    ActivationEnd = 14,
+    // (undocumented)
+    ActivationStart = 13,
+    // (undocumented)
+    ChildActivationEnd = 12,
+    // (undocumented)
+    ChildActivationStart = 11,
+    // (undocumented)
+    GuardsCheckEnd = 8,
+    // (undocumented)
+    GuardsCheckStart = 7,
+    // (undocumented)
+    NavigationCancel = 2,
+    // (undocumented)
+    NavigationEnd = 1,
+    // (undocumented)
+    NavigationError = 3,
+    // (undocumented)
+    NavigationStart = 0,
+    // (undocumented)
+    ResolveEnd = 6,
+    // (undocumented)
+    ResolveStart = 5,
+    // (undocumented)
+    RouteConfigLoadEnd = 10,
+    // (undocumented)
+    RouteConfigLoadStart = 9,
+    // (undocumented)
+    RoutesRecognized = 4,
+    // (undocumented)
+    Scroll = 15
+}
+
 // @public
 export interface ExtraOptions {
     anchorScrolling?: 'disabled' | 'enabled';
@@ -231,6 +275,8 @@ export class GuardsCheckEnd extends RouterEvent {
     // (undocumented)
     toString(): string;
     // (undocumented)
+    readonly type = EventType.GuardsCheckEnd;
+    // (undocumented)
     urlAfterRedirects: string;
 }
 
@@ -246,6 +292,8 @@ export class GuardsCheckStart extends RouterEvent {
     // (undocumented)
     toString(): string;
     // (undocumented)
+    readonly type = EventType.GuardsCheckStart;
+    // (undocumented)
     urlAfterRedirects: string;
 }
 
@@ -296,6 +344,8 @@ export class NavigationCancel extends RouterEvent {
     reason: string;
     // (undocumented)
     toString(): string;
+    // (undocumented)
+    readonly type = EventType.NavigationCancel;
 }
 
 // @public
@@ -307,6 +357,8 @@ export class NavigationEnd extends RouterEvent {
     // (undocumented)
     toString(): string;
     // (undocumented)
+    readonly type = EventType.NavigationEnd;
+    // (undocumented)
     urlAfterRedirects: string;
 }
 
@@ -320,6 +372,8 @@ export class NavigationError extends RouterEvent {
     error: any;
     // (undocumented)
     toString(): string;
+    // (undocumented)
+    readonly type = EventType.NavigationError;
 }
 
 // @public
@@ -331,18 +385,20 @@ export class NavigationStart extends RouterEvent {
     constructor(
     id: number,
     url: string,
-    navigationTrigger?: 'imperative' | 'popstate' | 'hashchange',
+    navigationTrigger?: NavigationTrigger,
     restoredState?: {
         [k: string]: any;
         navigationId: number;
     } | null);
-    navigationTrigger?: 'imperative' | 'popstate' | 'hashchange';
+    navigationTrigger?: NavigationTrigger;
     restoredState?: {
         [k: string]: any;
         navigationId: number;
     } | null;
     // (undocumented)
     toString(): string;
+    // (undocumented)
+    readonly type = EventType.NavigationStart;
 }
 
 // @public
@@ -424,6 +480,8 @@ export class ResolveEnd extends RouterEvent {
     // (undocumented)
     toString(): string;
     // (undocumented)
+    readonly type = EventType.ResolveEnd;
+    // (undocumented)
     urlAfterRedirects: string;
 }
 
@@ -439,6 +497,8 @@ export class ResolveStart extends RouterEvent {
     // (undocumented)
     toString(): string;
     // (undocumented)
+    readonly type = EventType.ResolveStart;
+    // (undocumented)
     urlAfterRedirects: string;
 }
 
@@ -472,6 +532,8 @@ export class RouteConfigLoadEnd {
     route: Route;
     // (undocumented)
     toString(): string;
+    // (undocumented)
+    readonly type = EventType.RouteConfigLoadEnd;
 }
 
 // @public
@@ -482,6 +544,8 @@ export class RouteConfigLoadStart {
     route: Route;
     // (undocumented)
     toString(): string;
+    // (undocumented)
+    readonly type = EventType.RouteConfigLoadStart;
 }
 
 // @public
@@ -746,6 +810,8 @@ export class RoutesRecognized extends RouterEvent {
     // (undocumented)
     toString(): string;
     // (undocumented)
+    readonly type = EventType.RoutesRecognized;
+    // (undocumented)
     urlAfterRedirects: string;
 }
 
@@ -766,6 +832,8 @@ export class Scroll {
     readonly routerEvent: NavigationEnd;
     // (undocumented)
     toString(): string;
+    // (undocumented)
+    readonly type = EventType.Scroll;
 }
 
 // @public
diff --git a/packages/router/src/events.ts b/packages/router/src/events.ts
index 36ee0655acf..d6a58d65965 100644
--- a/packages/router/src/events.ts
+++ b/packages/router/src/events.ts
@@ -20,6 +20,30 @@ import {ActivatedRouteSnapshot, RouterStateSnapshot} from './router_state';
  */
 export type NavigationTrigger = 'imperative'|'popstate'|'hashchange';
 
+/**
+ * Identifies the type of a router event.
+ *
+ * @publicApi
+ */
+export const enum EventType {
+  NavigationStart,
+  NavigationEnd,
+  NavigationCancel,
+  NavigationError,
+  RoutesRecognized,
+  ResolveStart,
+  ResolveEnd,
+  GuardsCheckStart,
+  GuardsCheckEnd,
+  RouteConfigLoadStart,
+  RouteConfigLoadEnd,
+  ChildActivationStart,
+  ChildActivationEnd,
+  ActivationStart,
+  ActivationEnd,
+  Scroll,
+}
+
 /**
  * Base for events the router goes through, as opposed to events tied to a specific
  * route. Fired one time for any given navigation.
@@ -58,6 +82,8 @@ export class RouterEvent {
  * @publicApi
  */
 export class NavigationStart extends RouterEvent {
+  readonly type = EventType.NavigationStart;
+
   /**
    * Identifies the call or event that triggered the navigation.
    * An `imperative` trigger is a call to `router.navigateByUrl()` or `router.navigate()`.
@@ -66,7 +92,7 @@ export class NavigationStart extends RouterEvent {
    * @see `NavigationCancel`
    * @see `NavigationError`
    */
-  navigationTrigger?: 'imperative'|'popstate'|'hashchange';
+  navigationTrigger?: NavigationTrigger;
 
   /**
    * The navigation state that was previously supplied to the `pushState` call,
@@ -93,7 +119,7 @@ export class NavigationStart extends RouterEvent {
       /** @docsNotRequired */
       url: string,
       /** @docsNotRequired */
-      navigationTrigger: 'imperative'|'popstate'|'hashchange' = 'imperative',
+      navigationTrigger: NavigationTrigger = 'imperative',
       /** @docsNotRequired */
       restoredState: {[k: string]: any, navigationId: number}|null = null) {
     super(id, url);
@@ -117,6 +143,8 @@ export class NavigationStart extends RouterEvent {
  * @publicApi
  */
 export class NavigationEnd extends RouterEvent {
+  readonly type = EventType.NavigationEnd;
+
   constructor(
       /** @docsNotRequired */
       id: number,
@@ -146,6 +174,8 @@ export class NavigationEnd extends RouterEvent {
  * @publicApi
  */
 export class NavigationCancel extends RouterEvent {
+  readonly type = EventType.NavigationCancel;
+
   constructor(
       /** @docsNotRequired */
       id: number,
@@ -172,6 +202,8 @@ export class NavigationCancel extends RouterEvent {
  * @publicApi
  */
 export class NavigationError extends RouterEvent {
+  readonly type = EventType.NavigationError;
+
   constructor(
       /** @docsNotRequired */
       id: number,
@@ -194,6 +226,8 @@ export class NavigationError extends RouterEvent {
  * @publicApi
  */
 export class RoutesRecognized extends RouterEvent {
+  readonly type = EventType.RoutesRecognized;
+
   constructor(
       /** @docsNotRequired */
       id: number,
@@ -221,6 +255,8 @@ export class RoutesRecognized extends RouterEvent {
  * @publicApi
  */
 export class GuardsCheckStart extends RouterEvent {
+  readonly type = EventType.GuardsCheckStart;
+
   constructor(
       /** @docsNotRequired */
       id: number,
@@ -247,6 +283,8 @@ export class GuardsCheckStart extends RouterEvent {
  * @publicApi
  */
 export class GuardsCheckEnd extends RouterEvent {
+  readonly type = EventType.GuardsCheckEnd;
+
   constructor(
       /** @docsNotRequired */
       id: number,
@@ -278,6 +316,8 @@ export class GuardsCheckEnd extends RouterEvent {
  * @publicApi
  */
 export class ResolveStart extends RouterEvent {
+  readonly type = EventType.ResolveStart;
+
   constructor(
       /** @docsNotRequired */
       id: number,
@@ -303,6 +343,8 @@ export class ResolveStart extends RouterEvent {
  * @publicApi
  */
 export class ResolveEnd extends RouterEvent {
+  readonly type = EventType.ResolveEnd;
+
   constructor(
       /** @docsNotRequired */
       id: number,
@@ -329,6 +371,8 @@ export class ResolveEnd extends RouterEvent {
  * @publicApi
  */
 export class RouteConfigLoadStart {
+  readonly type = EventType.RouteConfigLoadStart;
+
   constructor(
       /** @docsNotRequired */
       public route: Route) {}
@@ -345,6 +389,8 @@ export class RouteConfigLoadStart {
  * @publicApi
  */
 export class RouteConfigLoadEnd {
+  readonly type = EventType.RouteConfigLoadEnd;
+
   constructor(
       /** @docsNotRequired */
       public route: Route) {}
@@ -362,6 +408,8 @@ export class RouteConfigLoadEnd {
  * @publicApi
  */
 export class ChildActivationStart {
+  readonly type = EventType.ChildActivationStart;
+
   constructor(
       /** @docsNotRequired */
       public snapshot: ActivatedRouteSnapshot) {}
@@ -379,6 +427,8 @@ export class ChildActivationStart {
  * @publicApi
  */
 export class ChildActivationEnd {
+  readonly type = EventType.ChildActivationEnd;
+
   constructor(
       /** @docsNotRequired */
       public snapshot: ActivatedRouteSnapshot) {}
@@ -397,6 +447,8 @@ export class ChildActivationEnd {
  * @publicApi
  */
 export class ActivationStart {
+  readonly type = EventType.ActivationStart;
+
   constructor(
       /** @docsNotRequired */
       public snapshot: ActivatedRouteSnapshot) {}
@@ -415,6 +467,8 @@ export class ActivationStart {
  * @publicApi
  */
 export class ActivationEnd {
+  readonly type = EventType.ActivationEnd;
+
   constructor(
       /** @docsNotRequired */
       public snapshot: ActivatedRouteSnapshot) {}
@@ -430,6 +484,8 @@ export class ActivationEnd {
  * @publicApi
  */
 export class Scroll {
+  readonly type = EventType.Scroll;
+
   constructor(
       /** @docsNotRequired */
       readonly routerEvent: NavigationEnd,
@@ -479,5 +535,60 @@ export class Scroll {
  *
  * @publicApi
  */
-export type Event = RouterEvent|RouteConfigLoadStart|RouteConfigLoadEnd|ChildActivationStart|
-    ChildActivationEnd|ActivationStart|ActivationEnd|Scroll;
+export type Event =
+    RouterEvent|NavigationStart|NavigationEnd|NavigationCancel|NavigationError|RoutesRecognized|
+    GuardsCheckStart|GuardsCheckEnd|RouteConfigLoadStart|RouteConfigLoadEnd|ChildActivationStart|
+    ChildActivationEnd|ActivationStart|ActivationEnd|Scroll|ResolveStart|ResolveEnd;
+
+
+export function stringifyEvent(routerEvent: Event): string {
+  if (!('type' in routerEvent)) {
+    return `Unknown Router Event: ${routerEvent.constructor.name}`;
+  }
+  switch (routerEvent.type) {
+    case EventType.ActivationEnd:
+      return `ActivationEnd(path: '${routerEvent.snapshot.routeConfig?.path || ''}')`;
+    case EventType.ActivationStart:
+      return `ActivationStart(path: '${routerEvent.snapshot.routeConfig?.path || ''}')`;
+    case EventType.ChildActivationEnd:
+      return `ChildActivationEnd(path: '${routerEvent.snapshot.routeConfig?.path || ''}')`;
+    case EventType.ChildActivationStart:
+      return `ChildActivationStart(path: '${routerEvent.snapshot.routeConfig?.path || ''}')`;
+    case EventType.GuardsCheckEnd:
+      return `GuardsCheckEnd(id: ${routerEvent.id}, url: '${
+          routerEvent.url}', urlAfterRedirects: '${routerEvent.urlAfterRedirects}', state: ${
+          routerEvent.state}, shouldActivate: ${routerEvent.shouldActivate})`;
+    case EventType.GuardsCheckStart:
+      return `GuardsCheckStart(id: ${routerEvent.id}, url: '${
+          routerEvent.url}', urlAfterRedirects: '${routerEvent.urlAfterRedirects}', state: ${
+          routerEvent.state})`;
+    case EventType.NavigationCancel:
+      return `NavigationCancel(id: ${routerEvent.id}, url: '${routerEvent.url}')`;
+    case EventType.NavigationEnd:
+      return `NavigationEnd(id: ${routerEvent.id}, url: '${routerEvent.url}', urlAfterRedirects: '${
+          routerEvent.urlAfterRedirects}')`;
+    case EventType.NavigationError:
+      return `NavigationError(id: ${routerEvent.id}, url: '${routerEvent.url}', error: ${
+          routerEvent.error})`;
+    case EventType.NavigationStart:
+      return `NavigationStart(id: ${routerEvent.id}, url: '${routerEvent.url}')`;
+    case EventType.ResolveEnd:
+      return `ResolveEnd(id: ${routerEvent.id}, url: '${routerEvent.url}', urlAfterRedirects: '${
+          routerEvent.urlAfterRedirects}', state: ${routerEvent.state})`;
+    case EventType.ResolveStart:
+      return `ResolveStart(id: ${routerEvent.id}, url: '${routerEvent.url}', urlAfterRedirects: '${
+          routerEvent.urlAfterRedirects}', state: ${routerEvent.state})`;
+    case EventType.RouteConfigLoadEnd:
+      return `RouteConfigLoadEnd(path: ${routerEvent.route.path})`;
+    case EventType.RouteConfigLoadStart:
+      return `RouteConfigLoadStart(path: ${routerEvent.route.path})`;
+    case EventType.RoutesRecognized:
+      return `RoutesRecognized(id: ${routerEvent.id}, url: '${
+          routerEvent.url}', urlAfterRedirects: '${routerEvent.urlAfterRedirects}', state: ${
+          routerEvent.state})`;
+    case EventType.Scroll:
+      const pos =
+          routerEvent.position ? `${routerEvent.position[0]}, ${routerEvent.position[1]}` : null;
+      return `Scroll(anchor: '${routerEvent.anchor}', position: '${pos}')`;
+  }
+}
diff --git a/packages/router/src/index.ts b/packages/router/src/index.ts
index 974163798e9..9c0ad908ddd 100644
--- a/packages/router/src/index.ts
+++ b/packages/router/src/index.ts
@@ -10,7 +10,7 @@
 export {RouterLink, RouterLinkWithHref} from './directives/router_link';
 export {RouterLinkActive} from './directives/router_link_active';
 export {RouterOutlet, RouterOutletContract} from './directives/router_outlet';
-export {ActivationEnd, ActivationStart, ChildActivationEnd, ChildActivationStart, Event, GuardsCheckEnd, GuardsCheckStart, NavigationCancel, NavigationEnd, NavigationError, NavigationStart, ResolveEnd, ResolveStart, RouteConfigLoadEnd, RouteConfigLoadStart, RouterEvent, RoutesRecognized, Scroll} from './events';
+export {ActivationEnd, ActivationStart, ChildActivationEnd, ChildActivationStart, Event, EventType, GuardsCheckEnd, GuardsCheckStart, NavigationCancel, NavigationEnd, NavigationError, NavigationStart, ResolveEnd, ResolveStart, RouteConfigLoadEnd, RouteConfigLoadStart, RouterEvent, RoutesRecognized, Scroll} from './events';
 export {CanActivate, CanActivateChild, CanDeactivate, CanLoad, Data, LoadChildren, LoadChildrenCallback, QueryParamsHandling, Resolve, ResolveData, Route, Routes, RunGuardsAndResolvers, UrlMatcher, UrlMatchResult} from './models';
 export {DefaultTitleStrategy, TitleStrategy} from './page_title_strategy';
 export {BaseRouteReuseStrategy, DetachedRouteHandle, RouteReuseStrategy} from './route_reuse_strategy';
diff --git a/packages/router/src/router_module.ts b/packages/router/src/router_module.ts
index e352a717b74..54ce07a888a 100644
--- a/packages/router/src/router_module.ts
+++ b/packages/router/src/router_module.ts
@@ -15,7 +15,7 @@ import {EmptyOutletComponent} from './components/empty_outlet';
 import {RouterLink, RouterLinkWithHref} from './directives/router_link';
 import {RouterLinkActive} from './directives/router_link_active';
 import {RouterOutlet} from './directives/router_outlet';
-import {Event} from './events';
+import {Event, stringifyEvent} from './events';
 import {Route, Routes} from './models';
 import {DefaultTitleStrategy, TitleStrategy} from './page_title_strategy';
 import {RouteReuseStrategy} from './route_reuse_strategy';
@@ -473,11 +473,11 @@ export function setupRouter(
 
   assignExtraOptionsToRouter(opts, router);
 
-  if (opts.enableTracing) {
+  if ((typeof ngDevMode === 'undefined' || ngDevMode) && opts.enableTracing) {
     router.events.subscribe((e: Event) => {
       // tslint:disable:no-console
       console.group?.(`Router Event: ${(<any>e.constructor).name}`);
-      console.log(e.toString());
+      console.log(stringifyEvent(e));
       console.log(e);
       console.groupEnd?.();
       // tslint:enable:no-console