diff --git a/.changeset/short-vans-camp.md b/.changeset/short-vans-camp.md
new file mode 100644
index 000000000..5874fc3eb
--- /dev/null
+++ b/.changeset/short-vans-camp.md
@@ -0,0 +1,5 @@
+---
+'vite-plugin-kit-routes': minor
+---
+
+also generate routes during build
diff --git a/packages/vite-plugin-kit-routes/src/lib/plugin.ts b/packages/vite-plugin-kit-routes/src/lib/plugin.ts
index 4127dc60d..705b3aab9 100644
--- a/packages/vite-plugin-kit-routes/src/lib/plugin.ts
+++ b/packages/vite-plugin-kit-routes/src/lib/plugin.ts
@@ -775,7 +775,7 @@ const arrayToRecord = (arr?: string[]) => {
   return `: Record<string, never>`
 }
 
-export const run = (atStart: boolean, o?: Options) => {
+export const run = async (atStart: boolean, o?: Options) => {
   const options = getDefaultOption(o)
 
   const files = getFilesUnder(routes_path())
@@ -960,10 +960,14 @@ ${objTypes
         })
       }
 
+      const exitPromise = new Promise<void>(resolve => {
+        child.on('close', () => resolve())
+      })
+
+      await exitPromise
+
       if (shouldLog('update', options)) {
-        child.on('close', () => {
-          theEnd(atStart, result, objTypes, options)
-        })
+        theEnd(atStart, result, objTypes, options)
       }
     } else {
       theEnd(atStart, result, objTypes, options)
@@ -1069,8 +1073,8 @@ export function kitRoutes<T extends ExtendTypes = ExtendTypes>(options?: Options
     // Run the thing at startup
     {
       name: 'kit-routes',
-      configureServer() {
-        run(true, options)
+      async buildStart() {
+        await run(true, options)
       },
     },
 
@@ -1080,8 +1084,8 @@ export function kitRoutes<T extends ExtendTypes = ExtendTypes>(options?: Options
         name: 'kit-routes-watch',
         logs: [],
         watch: ['**/+page.svelte', '**/+page.server.ts', '**/+server.ts'],
-        run: () => {
-          run(false, options)
+        run: async () => {
+          await run(false, options)
         },
       },
     ]),
diff --git a/packages/vite-plugin-kit-routes/src/lib/plugins.spec.ts b/packages/vite-plugin-kit-routes/src/lib/plugins.spec.ts
index 9ef245457..9170862e0 100644
--- a/packages/vite-plugin-kit-routes/src/lib/plugins.spec.ts
+++ b/packages/vite-plugin-kit-routes/src/lib/plugins.spec.ts
@@ -460,7 +460,7 @@ describe('run()', async () => {
   for (let i = 0; i < runs.length; i++) {
     const toRun = runs[i]
     it(`run ${toRun.pathFile}`, async () => {
-      const ret = run(false, {
+      const ret = await run(false, {
         format: toRun.format,
         generated_file_path: getPathROUTES(toRun.pathFile),
         ...toRun.extra,
@@ -474,7 +474,7 @@ describe('run()', async () => {
     const toRun = getToRunShortened(runs[i])
 
     it(`run ${toRun.pathFile}`, async () => {
-      const ret = run(false, {
+      const ret = await run(false, {
         format: toRun.format,
         generated_file_path: getPathROUTES(toRun.pathFile),
         ...toRun.extra,
@@ -769,9 +769,9 @@ describe('run()', async () => {
     })
   }
 
-  it('post_update_run', () => {
+  it('post_update_run', async () => {
     const generated_file_path = 'src/test/ROUTES_post-update.ts'
-    run(false, {
+    await run(false, {
       generated_file_path,
       post_update_run: 'echo done',
     })
@@ -779,9 +779,9 @@ describe('run()', async () => {
     expect(true).toBe(true)
   })
 
-  it('with path base', () => {
+  it('with path base', async () => {
     const generated_file_path = 'src/test/ROUTES_base.ts'
-    run(false, {
+    await run(false, {
       generated_file_path,
       path_base: true,
     })