diff --git a/point.js b/point.js
new file mode 100644
index 0000000..3b1cad0
--- /dev/null
+++ b/point.js
@@ -0,0 +1,82 @@
+document.addEventListener("DOMContentLoaded", () => {
+    
+    var mymap = L.map("locationmap").setView([38.891, 139.824], 16);
+    L.tileLayer('https://{s}.tile.osm.org/{z}/{x}/{y}.png', {
+        attribution: '&copy; <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
+    }).addTo(mymap);
+
+    var locmarker = L.marker(mymap.getCenter()).addTo(mymap);
+    locmarker.bindPopup("STARTを押してね").openPopup();
+
+    let watchId = null;
+    let polyline = L.polyline([], { color: 'blue' }).addTo(mymap);
+    let totalDistance = 0;
+    let lastLatLng = null;
+
+    function startLogging() {
+        if (watchId !== null) return;
+
+        watchId = navigator.geolocation.watchPosition(
+            (position) => {
+                const { latitude, longitude } = position.coords;
+                const latLng = L.latLng(latitude, longitude);
+
+                polyline.addLatLng(latLng);
+                mymap.setView(latLng, 13);
+
+                if (lastLatLng) {
+                    const distance = lastLatLng.distanceTo(latLng);
+                    totalDistance += distance;
+                    document.getElementById("distance").textContent = totalDistance.toFixed(2);
+                }
+
+                lastLatLng = latLng;
+            },
+            (error) => {
+                console.error("Geolocation error:", error);
+            },
+            {
+                enableHighAccuracy: true,
+                maximumAge: 0,
+                timeout: 5000
+            }
+        );
+    }
+
+    function stopLogging() {
+        if (watchId !== null) {
+            navigator.geolocation.clearWatch(watchId);
+            watchId = null;
+        }
+    }
+
+    function calculateDistance(latLng1, latLng2) {
+        const R = 6371000; // 地球の半径(m)
+        const rad = Math.PI / 180;
+        const dLat = (latLng2.lat - latLng1.lat) * rad;
+        const dLng = (latLng2.lng - latLng1.lng) * rad;
+
+        const a = Math.sin(dLat / 2) ** 2 +
+                  Math.cos(latLng1.lat * rad) * Math.cos(latLng2.lat * rad) *
+                  Math.sin(dLng / 2) ** 2;
+
+        const c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
+
+        return R * c; // 距離(m)
+    }
+
+   
+    mymap.on("click", (e) => {
+        const latLng = e.latlng;
+        const distance = lastLatLng ? lastLatLng.distanceTo(latLng).toFixed(2) : "計測しています";
+        L.marker(latLng)
+            .addTo(mymap)
+            .bindPopup(`距離: ${distance} m`)
+            .openPopup();
+    });
+
+    
+    document.getElementById("start").addEventListener("click", startLogging);
+    
+    document.getElementById("stop").addEventListener("click", stopLogging);
+});