diff --git a/.gitignore b/.gitignore
index a569048..cbf7c30 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
-/node_modules
+node_modules
 /.tshy
 /lib
 /dist
diff --git a/bench/bench.js b/bench/bench.js
new file mode 100644
index 0000000..fed1279
--- /dev/null
+++ b/bench/bench.js
@@ -0,0 +1,38 @@
+import {packageUp, packageUpSync} from 'package-up';
+import {up as empathic} from 'empathic/package';
+import {findPackagePath, findPackagePathSync} from 'fd-package-json';
+import {Bench} from 'tinybench';
+import {join} from 'node:path';
+import {styleText} from 'node:util';
+
+const dirs = 'abcdefghij';
+const depths = [1, 3, 5, 10];
+
+for (const dep of depths) {
+  const name = `${dep} depth${dep === 1 ? '' : 's'}`;
+  const cwd = join(import.meta.dirname, 'fixture', ...dirs.substring(0, dep));
+  const bench = new Bench({name, warmup: true});
+
+  bench
+    .add('package-up', async () => await packageUp({cwd}))
+    .add('package-up (sync)', () => packageUpSync({cwd}))
+    .add('empathic (sync)', () => empathic({cwd}))
+    .add('fd-package-json', async () => await findPackagePath(cwd))
+    .add('fd-package-json (sync)', () => findPackagePathSync(cwd));
+
+  await bench.run();
+
+  console.log(`# ${name}`);
+
+  const table = bench.table();
+  for (const row of table) {
+    for (const prop in row) {
+      const isName = prop === 'Task name';
+      console.log(
+        `${isName ? '-' : ' '} ${isName ? '' : `${prop}: `}${styleText(isName ? ['bold', 'underline'] : 'none', String(row[prop]))}`
+      );
+    }
+  }
+
+  console.log('');
+}
diff --git a/bench/fixture/a/b/c/d/e/f/g/h/i/j/.gitkeep b/bench/fixture/a/b/c/d/e/f/g/h/i/j/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/bench/fixture/package.json b/bench/fixture/package.json
new file mode 100644
index 0000000..5b666b7
--- /dev/null
+++ b/bench/fixture/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "simple-package",
+  "private": true,
+  "version": "1.0.0",
+  "description": "A simple package that does nothing.",
+  "keywords": [
+    "some",
+    "keywords"
+  ],
+  "author": "That Guy",
+  "license": "MIT",
+  "type": "module",
+  "dependencies": {
+  }
+}
diff --git a/bench/package-lock.json b/bench/package-lock.json
new file mode 100644
index 0000000..3472ddd
--- /dev/null
+++ b/bench/package-lock.json
@@ -0,0 +1,88 @@
+{
+  "name": "bench",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "bench",
+      "devDependencies": {
+        "empathic": "^2.0.0",
+        "fd-package-json": "file:../",
+        "package-up": "^5.0.0",
+        "tinybench": "^5.1.0"
+      }
+    },
+    "..": {
+      "version": "1.2.0",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "walk-up-path": "^4.0.0"
+      },
+      "devDependencies": {
+        "@eslint/js": "^9.27.0",
+        "@types/node": "^20.11.24",
+        "c8": "^10.1.3",
+        "eslint": "^9.27.0",
+        "eslint-config-google": "^0.14.0",
+        "premove": "^4.0.0",
+        "prettier": "^3.5.3",
+        "typescript": "^5.8.3",
+        "typescript-eslint": "^8.32.1"
+      }
+    },
+    "node_modules/empathic": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/empathic/-/empathic-2.0.0.tgz",
+      "integrity": "sha512-i6UzDscO/XfAcNYD75CfICkmfLedpyPDdozrLMmQc5ORaQcdMoc21OnlEylMIqI7U8eniKrPMxxtj8k0vhmJhA==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=14"
+      }
+    },
+    "node_modules/fd-package-json": {
+      "resolved": "..",
+      "link": true
+    },
+    "node_modules/find-up-simple": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/find-up-simple/-/find-up-simple-1.0.1.tgz",
+      "integrity": "sha512-afd4O7zpqHeRyg4PfDQsXmlDe2PfdHtJt6Akt8jOWaApLOZk5JXs6VMR29lz03pRe9mpykrRCYIYxaJYcfpncQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/package-up": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/package-up/-/package-up-5.0.0.tgz",
+      "integrity": "sha512-MQEgDUvXCa3sGvqHg3pzHO8e9gqTCMPVrWUko3vPQGntwegmFo52mZb2abIVTjFnUcW0BcPz0D93jV5Cas1DWA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "find-up-simple": "^1.0.0"
+      },
+      "engines": {
+        "node": ">=18"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/tinybench": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/tinybench/-/tinybench-5.1.0.tgz",
+      "integrity": "sha512-LXKNtFualiKOm6gADe1UXPtf8+Nfn1CtPMEHAT33Fd2YjQatrujkDcK0+4wRC1X6t7fxUDXUs6BsvuIgfkDgDg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=20.0.0"
+      }
+    }
+  }
+}
diff --git a/bench/package.json b/bench/package.json
new file mode 100644
index 0000000..8f4cff1
--- /dev/null
+++ b/bench/package.json
@@ -0,0 +1,11 @@
+{
+  "name": "bench",
+  "private": true,
+  "type": "module",
+  "devDependencies": {
+    "empathic": "^2.0.0",
+    "fd-package-json": "file:../",
+    "package-up": "^5.0.0",
+    "tinybench": "^5.1.0"
+  }
+}