diff --git a/web/app/(app)/patching/runs/[runId]/page.tsx b/web/app/(app)/patching/runs/[runId]/page.tsx
new file mode 100644
index 0000000..b8fa282
--- /dev/null
+++ b/web/app/(app)/patching/runs/[runId]/page.tsx
@@ -0,0 +1,142 @@
+"use client";
+
+import Link from "next/link";
+import { useState } from "react";
+import { useParams } from "next/navigation";
+import { useMutation, useQuery, useQueryClient } from "@tanstack/react-query";
+import { api, PatchServerRun } from "@/lib/api";
+import { AsyncBoundary, Badge, Button, Card, CenteredSpinner, Table, Tbody, Td, Th, Thead, Tr, friendlyMessage, useToast } from "@/components/ui";
+import { RUN_STATUS, SERVER_STATUS } from "@/components/patching/status";
+
+function installed(s: PatchServerRun): string {
+    if (s.pending_after === undefined || s.pending_after === null) return "n/a";
+    return String(Math.max(0, s.pending_before - s.pending_after));
+}
+
+function ServerRow({ s }: { s: PatchServerRun }) {
+    const [open, setOpen] = useState(false);
+    const meta = SERVER_STATUS[s.status];
+    return (
+        <>
+            <Tr>
+                <Td label="Server">
+                    <Link href={`/servers/${s.server_id}`} className="font-mono text-sm text-accent hover:underline">
+                        {s.hostname}
+                    </Link>
+                </Td>
+                <Td label="Status">
+                    <Badge variant={meta.variant}>{meta.label}</Badge>
+                </Td>
+                <Td label="Installed">
+                    <span className="font-mono text-sm tabular-nums">{installed(s)}</span>
+                </Td>
+                <Td label="Reboot">
+                    <span className="text-xs text-text-secondary">
+                        {s.rebooted_at ? `rebooted ${new Date(s.rebooted_at).toLocaleTimeString()}` : "none"}
+                        {s.verified_at && `, back ${new Date(s.verified_at).toLocaleTimeString()}`}
+                    </span>
+                </Td>
+                <Td label="Detail">
+                    <div className="flex items-center justify-end gap-3">
+                        {s.error && <span className="max-w-xs truncate text-xs text-danger" title={s.error}>{s.error}</span>}
+                        {s.output && (
+                            <Button variant="ghost" size="sm" onClick={() => setOpen(!open)} aria-expanded={open}>
+                                {open ? "Hide output" : "Output"}
+                            </Button>
+                        )}
+                    </div>
+                </Td>
+            </Tr>
+            {open && s.output && (
+                <Tr>
+                    <Td colSpan={5}>
+                        <pre className="max-h-96 overflow-auto rounded bg-well px-4 py-3 font-mono text-[11.5px] leading-relaxed text-text-secondary">{s.output}</pre>
+                    </Td>
+                </Tr>
+            )}
+        </>
+    );
+}
+
+export default function PatchRunPage() {
+    const { runId } = useParams<{ runId: string }>();
+    const queryClient = useQueryClient();
+    const toast = useToast();
+    const { data: run, isLoading, error, refetch } = useQuery({
+        queryKey: ["patch-run", runId],
+        queryFn: () => api.getPatchRun(runId),
+        refetchInterval: (q) => (q.state.data?.status === "running" ? 5_000 : false),
+    });
+    const cancel = useMutation({
+        mutationFn: () => api.cancelPatchRun(runId),
+        onSuccess: () => {
+            toast.success("Cancelled. Servers already patching will finish; nothing further starts.");
+            queryClient.invalidateQueries({ queryKey: ["patch-run", runId] });
+        },
+        onError: (e) => toast.error(friendlyMessage(e)),
+    });
+
+    if (isLoading) return <CenteredSpinner />;
+
+    const counts = new Map<string, number>();
+    run?.servers.forEach((s) => counts.set(s.status, (counts.get(s.status) ?? 0) + 1));
+
+    return (
+        <div className="p-4 sm:p-6 lg:p-8">
+            <AsyncBoundary isLoading={false} error={error} onRetry={refetch}>
+                {run && (
+                    <>
+                        <Link href="/patching?tab=runs" className="text-sm text-text-secondary hover:text-accent">
+                            Back to patch runs
+                        </Link>
+                        <div className="mt-3 flex flex-wrap items-start justify-between gap-4">
+                            <div>
+                                <h1 className="text-2xl font-semibold text-text-primary">{run.policy_name ?? "Manual update"}</h1>
+                                <p className="mt-1 text-sm text-text-secondary">
+                                    Started {new Date(run.started_at).toLocaleString()} by {run.triggered_by}.{" "}
+                                    {run.scope === "security" ? "Security updates only" : "All pending updates"}, {run.reboot === "if_required" ? "reboot if required" : "no reboot"}.
+                                    {run.window_end && ` Window ends ${new Date(run.window_end).toLocaleString()}.`}
+                                </p>
+                            </div>
+                            <div className="flex items-center gap-3">
+                                <Badge variant={RUN_STATUS[run.status].variant}>{RUN_STATUS[run.status].label}</Badge>
+                                {run.status === "running" && !run.cancelled_at && (
+                                    <Button variant="secondary" size="sm" loading={cancel.isPending} onClick={() => cancel.mutate()}>
+                                        Cancel run
+                                    </Button>
+                                )}
+                            </div>
+                        </div>
+
+                        <div className="mt-4 flex flex-wrap gap-x-6 gap-y-2">
+                            {[...counts.entries()].map(([status, n]) => (
+                                <span key={status} className="text-sm text-text-secondary">
+                                    <span className="font-mono tabular-nums text-text-primary">{n}</span> {SERVER_STATUS[status as PatchServerRun["status"]].label}
+                                </span>
+                            ))}
+                        </div>
+
+                        <Card padding={false} className="mt-6">
+                            <Table>
+                                <Thead>
+                                    <Tr>
+                                        <Th>Server</Th>
+                                        <Th>Status</Th>
+                                        <Th>Installed</Th>
+                                        <Th>Reboot</Th>
+                                        <Th />
+                                    </Tr>
+                                </Thead>
+                                <Tbody>
+                                    {run.servers.map((s) => (
+                                        <ServerRow key={s.server_id} s={s} />
+                                    ))}
+                                </Tbody>
+                            </Table>
+                        </Card>
+                    </>
+                )}
+            </AsyncBoundary>
+        </div>
+    );
+}