diff --git a/.github/workflows/cd-release.yaml b/.github/workflows/disabled/cd-release.yaml
similarity index 100%
rename from .github/workflows/cd-release.yaml
rename to .github/workflows/disabled/cd-release.yaml
diff --git a/.github/workflows/cd-snapshot.yaml b/.github/workflows/disabled/cd-snapshot.yaml
similarity index 100%
rename from .github/workflows/cd-snapshot.yaml
rename to .github/workflows/disabled/cd-snapshot.yaml
diff --git a/core/src/main/java/com/graphhopper/routing/matrix/DistanceMatrix.java b/core/src/main/java/com/graphhopper/routing/matrix/DistanceMatrix.java
index 1fe253f27cc..4a813050a78 100644
--- a/core/src/main/java/com/graphhopper/routing/matrix/DistanceMatrix.java
+++ b/core/src/main/java/com/graphhopper/routing/matrix/DistanceMatrix.java
@@ -20,6 +20,11 @@ public final class DistanceMatrix {
     public static final double DISTANCE_SNAP_ERROR_VALUE = 1e7;
     public static final long TIME_SNAP_ERROR_VALUE = 10000000;
 
+    /** Sentinel value (meters) returned when two snapped points have no route between them. */
+    public static final double DISTANCE_NO_ROUTE_VALUE = (double) Integer.MAX_VALUE;
+    /** Sentinel value (milliseconds) returned when two snapped points have no route between them. */
+    public static final long TIME_NO_ROUTE_VALUE = (long) Integer.MAX_VALUE;
+
     private final int numberOfOrigins;
     private final int numberOfDestinations;
 
@@ -52,6 +57,9 @@ public DistanceMatrix(int numberOfOrigins, int numberOfDestinations, IntArrayLis
         distances = new double[numberOfOrigins][numberOfDestinations];
         times = new long[numberOfOrigins][numberOfDestinations];
 
+        for (double[] row : distances) Arrays.fill(row, DISTANCE_NO_ROUTE_VALUE);
+        for (long[]   row : times)     Arrays.fill(row, TIME_NO_ROUTE_VALUE);
+
         this.snapOriginsErrors = originsErrors;
         this.snapDestinationErrors = destinationsErros;
 
diff --git a/core/src/test/java/com/graphhopper/GraphHopperMatrixTest.java b/core/src/test/java/com/graphhopper/GraphHopperMatrixTest.java
index ebce47b225b..e48c0342c28 100644
--- a/core/src/test/java/com/graphhopper/GraphHopperMatrixTest.java
+++ b/core/src/test/java/com/graphhopper/GraphHopperMatrixTest.java
@@ -17,6 +17,7 @@
  */
 package com.graphhopper;
 
+import com.carrotsearch.hppc.IntArrayList;
 import com.graphhopper.config.CHProfile;
 import com.graphhopper.config.Profile;
 import com.graphhopper.routing.MultiplePointsNotFoundException;
@@ -38,7 +39,9 @@
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
+import static com.graphhopper.routing.matrix.DistanceMatrix.DISTANCE_NO_ROUTE_VALUE;
 import static com.graphhopper.routing.matrix.DistanceMatrix.DISTANCE_SNAP_ERROR_VALUE;
+import static com.graphhopper.routing.matrix.DistanceMatrix.TIME_NO_ROUTE_VALUE;
 import static com.graphhopper.routing.matrix.DistanceMatrix.TIME_SNAP_ERROR_VALUE;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertTrue;
@@ -437,4 +440,19 @@ void testMatrixCarProfile(){
         assertTrue(result.getTime(0, 0) == 530105);
 
     }
+
+    @Test
+    void testNoRouteDefaultCellValue() {
+        IntArrayList noErrors = new IntArrayList();
+        DistanceMatrix matrix = new DistanceMatrix(2, 2, noErrors, noErrors);
+
+        // Cells never written by setCell must return the no-route sentinel
+        assertEquals(DISTANCE_NO_ROUTE_VALUE, matrix.getDistance(0, 1));
+        assertEquals(TIME_NO_ROUTE_VALUE, matrix.getTime(0, 1));
+
+        // setCell must overwrite the sentinel with real values
+        matrix.setCell(0, 1, 1500.0, 90000L);
+        assertEquals(1500.0, matrix.getDistance(0, 1));
+        assertEquals(90000L, matrix.getTime(0, 1));
+    }
 }