diff --git a/server/app.py b/server/app.py
index b051bfe..91cc8ac 100644
--- a/server/app.py
+++ b/server/app.py
@@ -571,10 +571,11 @@ def geocode():
 @app.post("/api/v1/portal/recompute-trips")
 @require_login
 def recompute_trips():
-    """Manually trigger trip recomputation. Called after upload batch for freshness."""
+    """Recompute trips from scratch, clearing all deletion markers."""
     device_id = _portal_device_id()
     if device_id is None:
         return jsonify(error="device not configured"), 404
+    db.clear_deleted_trip_markers(device_id)
     n = db.compute_trips_for_device(device_id)
     return jsonify(status="ok", trips_computed=n)
 
@@ -591,6 +592,20 @@ def portal_delete_trip(trip_id):
     return jsonify(status="ok")
 
 
+@app.post("/api/v1/portal/trips/delete")
+@require_login
+def portal_delete_trips_batch():
+    device_id = _portal_device_id()
+    if device_id is None:
+        return jsonify(error="device not configured"), 404
+    body = request.get_json(silent=True) or {}
+    ids = body.get("ids")
+    if not isinstance(ids, list) or not ids:
+        return jsonify(error="expected {ids: [...]}"), 400
+    deleted = db.delete_trips_batch(device_id, ids)
+    return jsonify(status="ok", deleted=deleted)
+
+
 @app.delete("/api/v1/portal/dashcam/<int:file_id>")
 @require_login
 def portal_delete_dashcam(file_id):
diff --git a/server/docker-compose.yml b/server/docker-compose.yml
index 3f6442f..9b7d106 100644
--- a/server/docker-compose.yml
+++ b/server/docker-compose.yml
@@ -13,6 +13,7 @@ services:
       - ./sql/migrate_phase24.sql:/docker-entrypoint-initdb.d/migrate_phase24.sql:ro
       - ./sql/migrate_phase25_5a.sql:/docker-entrypoint-initdb.d/migrate_phase25_5a.sql:ro
       - ./sql/migrate_phase25_5c.sql:/docker-entrypoint-initdb.d/migrate_phase25_5c.sql:ro
+      - ./sql/migrate_phase26_deleted_trips.sql:/docker-entrypoint-initdb.d/migrate_phase26_deleted_trips.sql:ro
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER:-yarisobd}"]
       interval: 10s
diff --git a/server/modules/db.py b/server/modules/db.py
index 34e41e6..187a256 100644
--- a/server/modules/db.py
+++ b/server/modules/db.py
@@ -398,6 +398,15 @@ def compute_trips_for_device(device_id):
             "point_count": len(seg_rows),
         })
 
+    # Skip trips that were manually deleted (recompute won't re-insert them).
+    with get_cursor() as cur:
+        cur.execute(
+            "SELECT start_time FROM deleted_trip_markers WHERE device_id = %s",
+            (device_id,),
+        )
+        deleted_starts = {row[0] for row in cur.fetchall()}
+    trips = [t for t in trips if t["start_time"] not in deleted_starts]
+
     with get_cursor(commit=True) as cur:
         for t in trips:
             cur.execute(
@@ -540,13 +549,45 @@ def get_dashcam_file(device_id, file_id):
 
 
 def delete_trip(device_id, trip_id):
-    """Delete a computed trip record. Raw tracking_points are NOT removed."""
+    """Delete a computed trip record and mark its time range as deleted
+    so auto-recompute doesn't re-insert it. Raw tracking_points are kept."""
     with get_cursor(commit=True) as cur:
+        # Record the start_time before deleting so recompute skips this trip.
         cur.execute(
-            "DELETE FROM trips WHERE id = %s AND device_id = %s RETURNING id",
+            "SELECT start_time FROM trips WHERE id = %s AND device_id = %s",
             (trip_id, device_id),
         )
-        return cur.fetchone() is not None
+        row = cur.fetchone()
+        if row is None:
+            return False
+        cur.execute(
+            """INSERT INTO deleted_trip_markers (device_id, start_time)
+               VALUES (%s, %s) ON CONFLICT DO NOTHING""",
+            (device_id, row[0]),
+        )
+        cur.execute(
+            "DELETE FROM trips WHERE id = %s AND device_id = %s",
+            (trip_id, device_id),
+        )
+        return True
+
+
+def delete_trips_batch(device_id, trip_ids):
+    """Delete multiple trips in one transaction."""
+    deleted = 0
+    for tid in trip_ids:
+        if delete_trip(device_id, tid):
+            deleted += 1
+    return deleted
+
+
+def clear_deleted_trip_markers(device_id):
+    """Remove all deleted trip markers so recompute rebuilds everything."""
+    with get_cursor(commit=True) as cur:
+        cur.execute(
+            "DELETE FROM deleted_trip_markers WHERE device_id = %s",
+            (device_id,),
+        )
 
 
 def delete_dashcam_file(device_id, file_id):
diff --git a/server/sql/migrate_phase26_deleted_trips.sql b/server/sql/migrate_phase26_deleted_trips.sql
new file mode 100644
index 0000000..3530c06
--- /dev/null
+++ b/server/sql/migrate_phase26_deleted_trips.sql
@@ -0,0 +1,10 @@
+-- Migration: deleted trip markers to prevent recompute from re-inserting
+-- manually deleted trips. Each row records a trip the user explicitly
+-- removed. compute_trips_for_device() skips time ranges matching any marker.
+-- The "Recompute trips" button clears all markers before rebuilding.
+CREATE TABLE IF NOT EXISTS deleted_trip_markers (
+    device_id INTEGER NOT NULL REFERENCES devices(id) ON DELETE CASCADE,
+    start_time TIMESTAMPTZ NOT NULL,
+    deleted_at TIMESTAMPTZ NOT NULL DEFAULT now(),
+    PRIMARY KEY (device_id, start_time)
+);
diff --git a/server/templates/history.html b/server/templates/history.html
index b4491b8..fce020e 100644
--- a/server/templates/history.html
+++ b/server/templates/history.html
@@ -14,8 +14,11 @@
     {# ── Trip list ──────────────────────────────────────────────────── #}
     <div class="col-12 col-xl-5">
         <div class="card shadow-sm">
-            <div class="card-header py-2">
+            <div class="card-header py-2 d-flex justify-content-between align-items-center">
                 <h6 class="text-primary fw-bold m-0">Recorded trips</h6>
+                <button id="delete-selected-btn" class="btn btn-sm btn-outline-danger" type="button" hidden title="Delete selected trips">
+                    <i class="fas fa-trash fa-fw"></i> Delete selected
+                </button>
             </div>
             <div class="card-body p-0">
                 <div id="trip-loading" class="text-center text-muted py-4">
@@ -38,6 +41,7 @@
                     true
                 ) }}
                 <script>document.getElementById('trip-list').dataset.deleteUrl = '/api/v1/portal/trip/';</script>
+                <script>document.getElementById('trip-list').dataset.batchDeleteUrl = '/api/v1/portal/trips/delete';</script>
             </div>
         </div>
     </div>
diff --git a/static/js/history.js b/static/js/history.js
index e692b4d..100778e 100644
--- a/static/js/history.js
+++ b/static/js/history.js
@@ -232,6 +232,53 @@
     const tripList = document.getElementById("trip-list");
     const deletable = tripList && tripList.dataset.deletable === "1";
     const deleteUrl = (tripList && tripList.dataset.deleteUrl) || "/api/trip/";
+    const batchDeleteUrl = tripList && tripList.dataset.batchDeleteUrl;
+    const deleteSelectedBtn = document.getElementById("delete-selected-btn");
+
+    function getCheckedIds() {
+        return Array.from(body.querySelectorAll("input.trip-checkbox:checked"))
+            .map(cb => parseInt(cb.value));
+    }
+
+    function updateDeleteSelectedBtn() {
+        if (!deleteSelectedBtn) return;
+        const count = getCheckedIds().length;
+        deleteSelectedBtn.hidden = count === 0;
+        deleteSelectedBtn.textContent = `Delete selected (${count})`;
+    }
+
+    function selectAllTrips() {
+        const cbs = body.querySelectorAll("input.trip-checkbox");
+        const allChecked = cbs.length > 0 && Array.from(cbs).every(cb => cb.checked);
+        cbs.forEach(cb => { cb.checked = !allChecked; });
+        updateDeleteSelectedBtn();
+    }
+
+    async function deleteSelected() {
+        const ids = getCheckedIds();
+        if (!ids.length || !batchDeleteUrl) return;
+        const confirmed = await window.confirmDelete(
+            `Delete ${ids.length} selected trip(s)?\n\nRaw GPS data is kept — only computed trip records are removed.`
+        );
+        if (!confirmed) return;
+        try {
+            const res = await fetch(batchDeleteUrl, {
+                method: "POST",
+                headers: {"Content-Type": "application/json"},
+                body: JSON.stringify({ids: ids}),
+            });
+            if (!res.ok) throw new Error("Delete failed");
+            ids.forEach(id => {
+                const row = body.querySelector(`tr[data-trip-id="${id}"]`);
+                if (row) row.remove();
+            });
+            updateDeleteSelectedBtn();
+        } catch(e) { showError(e.message); }
+    }
+
+    if (deleteSelectedBtn) {
+        deleteSelectedBtn.addEventListener("click", deleteSelected);
+    }
 
     function renderTrips(trips) {
         body.replaceChildren();
@@ -248,7 +295,11 @@
                        <i class="fas fa-trash fa-fw" aria-hidden="true"></i>
                    </button>`
                 : "";
+            const checkboxCol = batchDeleteUrl
+                ? `<td class="text-center" onclick="event.stopPropagation()"><input type="checkbox" class="trip-checkbox form-check-input" value="${trip.id}"></td>`
+                : "";
             row.innerHTML = `
+                ${checkboxCol}
                 <td>${formatDate(trip.start_datetime)}</td>
                 <td>${formatDistance(trip.distance_km)}</td>
                 <td>${formatDuration(trip.duration_seconds)}</td>
@@ -261,6 +312,12 @@
                 </td>`;
             body.appendChild(row);
         });
+
+        // Wire checkbox listeners
+        body.querySelectorAll("input.trip-checkbox").forEach(cb => {
+            cb.addEventListener("change", updateDeleteSelectedBtn);
+        });
+        updateDeleteSelectedBtn();
     }
 
     body.addEventListener("click", function (event) {