@@ -127,7 +127,7 @@ void ProcessRunner::SetEnvironmentVariables() {
   // Add NODE_RUN_PACKAGE_JSON_PATH environment variable to the environment to
   // indicate which package.json is being processed.
   env_vars_.push_back("NODE_RUN_PACKAGE_JSON_PATH=" +
-                      package_json_path_.string());
+                      ConvertPathToUTF8(package_json_path_));
 
   env_ = std::unique_ptr<char*[]>(new char*[env_vars_.size() + 1]);
   options_.env = env_.get();
@@ -211,7 +211,7 @@ void ProcessRunner::OnExit(int64_t exit_status, int term_signal) {
 
 void ProcessRunner::Run() {
   // keeps the string alive until destructor
-  cwd_ = package_json_path_.parent_path().string();
+  cwd_ = ConvertPathToUTF8(package_json_path_.parent_path());
   options_.cwd = cwd_.c_str();
   if (int r = uv_spawn(loop_, &process_, &options_)) {
     fprintf(stderr, "Error: %s\n", uv_strerror(r));
@@ -233,14 +233,14 @@ FindPackageJson(const std::filesystem::path& cwd) {
     // Append "path/node_modules/.bin" to the env var, if it is a directory.
     auto node_modules_bin = directory_path / "node_modules" / ".bin";
     if (std::filesystem::is_directory(node_modules_bin)) {
-      path_env_var += node_modules_bin.string() + env_var_separator;
+      path_env_var += ConvertPathToUTF8(node_modules_bin) + env_var_separator;
     }
 
     if (raw_content.empty()) {
       package_json_path = directory_path / "package.json";
       // This is required for Windows because std::filesystem::path::c_str()
       // returns wchar_t* on Windows, and char* on other platforms.
-      std::string contents = package_json_path.string();
+      std::string contents = ConvertPathToUTF8(package_json_path);
       USE(ReadFileSync(&raw_content, contents.c_str()) > 0);
     }
   }
@@ -263,7 +263,7 @@ void RunTask(const std::shared_ptr<InitializationResultImpl>& result,
   if (!package_json.has_value()) {
     fprintf(stderr,
             "Can't find package.json for directory %s\n",
-            cwd.string().c_str());
+            ConvertPathToUTF8(cwd).c_str());
     result->exit_code_ = ExitCode::kGenericUserError;
     return;
   }
@@ -279,7 +279,7 @@ void RunTask(const std::shared_ptr<InitializationResultImpl>& result,
   simdjson::ondemand::object main_object;
 
   if (json_parser.iterate(raw_json).get(document)) {
-    fprintf(stderr, "Can't parse %s\n", path.string().c_str());
+    fprintf(stderr, "Can't parse %s\n", ConvertPathToUTF8(path).c_str());
     result->exit_code_ = ExitCode::kGenericUserError;
     return;
   }
@@ -288,9 +288,9 @@ void RunTask(const std::shared_ptr<InitializationResultImpl>& result,
     if (root_error == simdjson::error_code::INCORRECT_TYPE) {
       fprintf(stderr,
               "Root value unexpected not an object for %s\n\n",
-              path.string().c_str());
+              ConvertPathToUTF8(path).c_str());
     } else {
-      fprintf(stderr, "Can't parse %s\n", path.string().c_str());
+      fprintf(stderr, "Can't parse %s\n", ConvertPathToUTF8(path).c_str());
     }
     result->exit_code_ = ExitCode::kGenericUserError;
     return;
@@ -299,8 +299,9 @@ void RunTask(const std::shared_ptr<InitializationResultImpl>& result,
   // If package_json object doesn't have "scripts" field, throw an error.
   simdjson::ondemand::object scripts_object;
   if (main_object["scripts"].get_object().get(scripts_object)) {
-    fprintf(
-        stderr, "Can't find \"scripts\" field in %s\n", path.string().c_str());
+    fprintf(stderr,
+            "Can't find \"scripts\" field in %s\n",
+            ConvertPathToUTF8(path).c_str());
     result->exit_code_ = ExitCode::kGenericUserError;
     return;
   }
@@ -314,13 +315,13 @@ void RunTask(const std::shared_ptr<InitializationResultImpl>& result,
               "Script \"%.*s\" is unexpectedly not a string for %s\n\n",
               static_cast<int>(command_id.size()),
               command_id.data(),
-              path.string().c_str());
+              ConvertPathToUTF8(path).c_str());
     } else {
       fprintf(stderr,
               "Missing script: \"%.*s\" for %s\n\n",
               static_cast<int>(command_id.size()),
               command_id.data(),
-              path.string().c_str());
+              ConvertPathToUTF8(path).c_str());
       fprintf(stderr, "Available scripts are:\n");
 
       // Reset the object to iterate over it again
 
@@ -5,8 +5,11 @@ common.requireNoPackageJSONAbove();
 
 const { it, describe } = require('node:test');
 const assert = require('node:assert');
+const fs = require('node:fs');
+const path = require('node:path');
 
 const fixtures = require('../common/fixtures');
+const tmpdir = require('../common/tmpdir');
 const envSuffix = common.isWindows ? '-windows' : '';
 
 describe('node --run [command]', { concurrency: !process.env.TEST_PARALLEL }, () => {
@@ -223,6 +226,45 @@ describe('node --run [command]', { concurrency: !process.env.TEST_PARALLEL }, ()
     assert.strictEqual(child.code, 0);
   });
 
+  it('handles package paths outside the active Windows code page',
+     { skip: !common.isWindows }, async () => {
+       tmpdir.refresh();
+
+       const projectDir = path.join(tmpdir.path, 'node-run-\u{20BB7}');
+       const packageJsonPath = path.join(projectDir, 'package.json');
+       const nodeModulesBin = path.join(projectDir, 'node_modules', '.bin');
+       const checkScript = path.join(projectDir, 'check.js');
+
+       fs.mkdirSync(nodeModulesBin, { recursive: true });
+       fs.writeFileSync(packageJsonPath, JSON.stringify({
+         scripts: {
+           unicode: `"${process.execPath}" check.js`,
+         },
+       }));
+       fs.writeFileSync(checkScript, `
+         'use strict';
+         console.log(JSON.stringify({
+           cwd: process.cwd(),
+           packageJsonPath: process.env.NODE_RUN_PACKAGE_JSON_PATH,
+           path: process.env.PATH,
+         }));
+       `);
+
+       const child = await common.spawnPromisified(
+         process.execPath,
+         [ '--run', 'unicode'],
+         { cwd: projectDir },
+       );
+
+       assert.strictEqual(child.stderr, '');
+       assert.strictEqual(child.code, 0);
+
+       const output = JSON.parse(child.stdout);
+       assert.strictEqual(output.cwd, projectDir);
+       assert.strictEqual(output.packageJsonPath, packageJsonPath);
+       assert.strictEqual(output.path.split(path.delimiter)[0], nodeModulesBin);
+     });
+
   it('returns error on unparsable file', async () => {
     const child = await common.spawnPromisified(
       process.execPath,