diff --git a/libs/core/langchain_core/runnables/router.py b/libs/core/langchain_core/runnables/router.py
index 846e0a677b0..82587b3e207 100644
--- a/libs/core/langchain_core/runnables/router.py
+++ b/libs/core/langchain_core/runnables/router.py
@@ -49,6 +49,19 @@ class RouterRunnable(RunnableSerializable[RouterInput, Output]):
     """
     Runnable that routes to a set of Runnables based on Input['key'].
     Returns the output of the selected Runnable.
+
+    For example,
+
+    .. code-block:: python
+
+        from langchain_core.runnables.router import RouterRunnable
+        from langchain_core.runnables import RunnableLambda
+
+        add = RunnableLambda(func=lambda x: x + 1)
+        square = RunnableLambda(func=lambda x: x**2)
+
+        router = RouterRunnable(runnables={"add": add, "square": square})
+        router.invoke({"key": "square", "input": 3})
     """
 
     runnables: Mapping[str, Runnable[Any, Output]]