diff --git a/backend/__pycache__/main.cpython-312.pyc b/backend/__pycache__/main.cpython-312.pyc
index b6b5fa6..864af12 100644
Binary files a/backend/__pycache__/main.cpython-312.pyc and b/backend/__pycache__/main.cpython-312.pyc differ
diff --git a/backend/__pycache__/simulator.cpython-312.pyc b/backend/__pycache__/simulator.cpython-312.pyc
index eb611bc..478ca68 100644
Binary files a/backend/__pycache__/simulator.cpython-312.pyc and b/backend/__pycache__/simulator.cpython-312.pyc differ
diff --git a/backend/main.py b/backend/main.py
index 8df1b51..60cd788 100644
--- a/backend/main.py
+++ b/backend/main.py
@@ -174,6 +174,27 @@ def get_alerta_activa(
         return alerta
     return {"activa": False, "mensaje": None}
 
+@app.get("/domicilios/ruta-por-coordenadas")
+def ruta_por_coordenadas(
+    lat: float,
+    lng: float,
+    current_user=Depends(auth.get_current_user)
+):
+    ruta, distancia = simulator.encontrar_ruta_por_coordenadas(lat, lng)
+    if not ruta:
+        raise HTTPException(status_code=404, detail="No hay cobertura en esta ubicación")
+    colonia_info = next(
+        (c for c in simulator.COLONIAS.values() if c["routeId"] == ruta["routeId"]),
+        None
+    )
+    return {
+        "route_id": ruta["routeId"],
+        "nombre_ruta": ruta["name"],
+        "colonia_sugerida": colonia_info["colonia"] if colonia_info else ruta["name"],
+        "distancia_metros": round(distancia),
+        "cobertura": True
+    }
+
 @app.websocket("/ws/eta/{domicilio_id}")
 async def websocket_eta(websocket: WebSocket, domicilio_id: int,
                         token: str, db: Session = Depends(get_db)):
diff --git a/backend/simulator.py b/backend/simulator.py
index 3d0ae2e..9ce9181 100644
--- a/backend/simulator.py
+++ b/backend/simulator.py
@@ -1,6 +1,7 @@
 import json
 import os
 import datetime
+import math
 from sqlalchemy.orm import Session
 from database import SessionLocal
 import models
@@ -64,4 +65,28 @@ def get_eta(route_id: str, db: Session):
         mensaje = f"El camión llegará a tu zona entre las {ventana_inicio} y {ventana_fin}."
     return {"mensaje": mensaje, "evento": evento,
             "ventana_inicio": ventana_inicio, "ventana_fin": ventana_fin,
-            "current_position": pos}
\ No newline at end of file
+            "current_position": pos}
+
+def haversine(lat1: float, lon1: float, lat2: float, lon2: float) -> float:
+    R = 6371
+    dlat = math.radians(lat2 - lat1)
+    dlon = math.radians(lon2 - lon1)
+    a = (math.sin(dlat/2)**2 +
+         math.cos(math.radians(lat1)) *
+         math.cos(math.radians(lat2)) *
+         math.sin(dlon/2)**2)
+    c = 2 * math.atan2(math.sqrt(a), math.sqrt(1-a))
+    return R * c * 1000
+
+def encontrar_ruta_por_coordenadas(lat: float, lng: float):
+    mejor_ruta = None
+    menor_distancia = float('inf')
+    for ruta in RUTAS:
+        for pos in ruta["positions"]:
+            distancia = haversine(lat, lng, pos["lat"], pos["lng"])
+            if distancia < menor_distancia:
+                menor_distancia = distancia
+                mejor_ruta = ruta
+    if menor_distancia < 5000:
+        return mejor_ruta, menor_distancia
+    return None, None
\ No newline at end of file