diff --git a/admin.php b/admin.php
index a9267af..7fcca5e 100644
--- a/admin.php
+++ b/admin.php
@@ -48,14 +48,14 @@ include("api/statistics.php");
 ?>
 </div>
 <h1>Søk opp løper</h1>
-<form action="/api/runner.php" method="GET" hx-boost="true" hx-target="#runner_info" hx-swap="show:none">
+<form action="/api/runner.php" method="GET" hx-boost="true" hx-target="#runner" hx-swap="show:none">
   <label>
     Navn, startnummer eller klubb
     <input type="text" name="search" id="search">
   </label>
   <button type="submit">Søk</button>
 </form>
-<div id="runner_info" class="profile-card"></div>
+<div id="runner" class="profile-card"></div>
 
 <button hx-get="/api/email.php" hx-target="#emails" hx-headers='js:{"password": localStorage.getItem("passord")}'>hent alle eposter</button>
 <button hx-get="/api/email.php?course=Kadaverløpet" hx-target="#emails" hx-headers='js:{"password": localStorage.getItem("passord")}'>Hent bare eposter for fullkadavern</button>
diff --git a/api/config.php b/api/config.php
index 059db30..6f8663e 100644
--- a/api/config.php
+++ b/api/config.php
@@ -24,10 +24,15 @@ if ($method == "POST") {
     $start_time = $_POST['start_time'];
 
     $password = $_POST['password'];
+
+    $new_time = DateTime::createFromFormat(DateTime::ISO8601, $start_time. "+01");
     if (!password_verify($password, $hash)) {
         http_response_code(response_code: 401);
-    }
-    else {
+    } elseif (!$new_time) {
+        http_response_code(response_code: 400);
+        echo("Feil datoformat din noldus!!!!!!!11!!! Skriv inn sekund");
+    } else {
+
         $file = "$documentRoot/data/config.ini";
         $config["start_date"] = $start_time . "+01";
         write_ini_file($config, $file);
diff --git a/api/runner.php b/api/runner.php
index a9819b5..0beaec1 100644
--- a/api/runner.php
+++ b/api/runner.php
@@ -21,18 +21,78 @@ if ($method == "POST") {
         http_response_code(response_code: 400);
     }
     else {
-        $file = "$documentRoot/data/db.csv";
-        file_put_contents($file, $line, FILE_APPEND);
-        header("HX-Replace-Url: false");
-        echo("Løper lagt til: $line");
+        $runners = read_runners_from_csv();
+        $filtered = search_for_runner($runners, $runner_id);
+        if ($filtered != []) {
+            http_response_code(response_code: 400);
+            echo("<span class='bg-danger'>Startnummer er allerede i bruk!</span>");
+        } else {
+            $file = "$documentRoot/data/db.csv";
+            file_put_contents($file, $line, FILE_APPEND);
+            header("HX-Replace-Url: false");
+            echo("Løper lagt til: $line");
+        }
+
+
     }
 }
+if ($method == "PATCH") {
+    parse_str(file_get_contents('php://input'), $_PATCH);
+    $line = $_PATCH["id"] . ";;" . $_PATCH["name"] . ";" . $_PATCH["email"] . ";" . $_PATCH["phone"] . ";" . $_PATCH["club"] . ";" . $_PATCH["course"] . ";;;\n";
+
+    $all_lines = file("$documentRoot/data/db.csv");
+    $csv_line = (int)$_PATCH["line_in_csv"];
+
+    $old_id = str_getcsv($all_lines[$csv_line], ";")[0];
+
+    $runners = read_runners_from_csv();
+    $filtered = search_for_runner($runners, $_PATCH["id"]);
+
+    if (!is_int($csv_line)){
+        http_response_code(response_code: 400);
+    } elseif ($filtered != [] && $_PATCH["id"] != $old_id) {
+            http_response_code(response_code: 400);
+            echo("<span class='bg-danger'>Startnummer er allerede i bruk!</span>");
+    } else {
+        $all_lines[$csv_line] =  $line;
+        file_put_contents("$documentRoot/data/db.csv",implode("",$all_lines));
+        echo("<span class='bg-success'>Endret: $line</span>");
+    }
+}
+
 if ($method == "GET") {
     parse_str($_SERVER['QUERY_STRING'], $query);
     
     $runners = read_runners_from_csv();
     $filtered = search_for_runner($runners, $query['search']);
-    if (count($filtered) == 1){
+    if (count($filtered) == 1 && $query['edit'] == "true") {
+        $r = $filtered[0];
+        $response .= "
+        <h2>Endre $r->id $r->name</h2>
+        <form hx-patch='/api/runner.php'>
+            <label>Startnummer<input type='number' id='id' name='id' required value='$r->id'></label>
+            <label>Navn<input type='text' id='name' name='name' required value='$r->name'></label>
+            <label>Forening<input type='text' id='club' name='club' required value='$r->club'></label>
+            <label>
+            <fieldset>
+            <input type='radio' name='course' value='Kadaverløpet' checked='checked'>
+            Kadaverløpet
+            </label>
+                <label>
+            <input type='radio' name='course' value=\"Minikadaver'n\">
+            Minikadaver'n
+            </label>
+            </fieldset>
+            <label>epost<input type='text' id='email' name='email' value='$r->email'></label>
+            <label>telefon<input type='text' id='phone' name='phone' value='$r->phone'></label>
+            <label><input type='hidden' id='student' name='student' required value='$r->is_student'></label>
+            <label><input type='hidden' id='line_in_csv' name='line_in_csv' required value='$r->line_in_csv'></label>
+            <button type='submit'>Endre løper</button>
+        </form>
+        ";
+        header("HX-Replace-Url: false");
+        echo($response);
+    } elseif (count($filtered) == 1){
         $r = $filtered[0];
         $response .= "
         <h2> $r->name</h2>
@@ -50,7 +110,12 @@ if ($method == "GET") {
         
         for ($i = 0; $i < count($filtered); $i++) {
             $runner = $filtered[$i];
-            $response .= "<button class=\"default\" hx-get=\"/api/runner.php?search=$runner->id\" hx-target=\"#runner_info\" hx-swap=\"show:none\">$runner->id $runner->name</button>";
+            if ($query['edit'] == "true") {
+                $url = "/api/runner.php?search=$runner->id&edit=true";
+            } else {
+                $url = "/api/runner.php?search=$runner->id";
+            }
+            $response .= "<button class=\"default\" hx-get=\"$url\" hx-target=\"#runner\" hx-swap=\"show:none\">$runner->id $runner->name</button>";
             header("HX-Replace-Url: false");
         }
         echo($response);
diff --git a/config_editor.html b/config_editor.html
index 9f4954d..40e1ed6 100644
--- a/config_editor.html
+++ b/config_editor.html
@@ -63,5 +63,15 @@
 
 </script>
 <script src="/lib/htmx.min.js"></script>
+<script>
+  document.body.addEventListener('htmx:beforeSwap', function(evt) {
+  // Allow 422 and 400 responses to swap
+  // We treat these as form validation errors
+  if (evt.detail.xhr.status === 422 || evt.detail.xhr.status === 400) {
+    evt.detail.shouldSwap = true;
+    evt.detail.isError = false;
+  }
+});
+</script>
 </body>
 </html>
\ No newline at end of file
diff --git a/db_editor.html b/db_editor.html
index 8df0cb7..484c6b4 100644
--- a/db_editor.html
+++ b/db_editor.html
@@ -54,6 +54,18 @@
 
     <button type="submit">Legg til løper</button>
   </form>
+<div id="updated"></div>
+  <h2>Endre løper</h2>
+<form action="/api/runner.php" method="GET" hx-boost="true" hx-target="#runner" hx-swap="show:none">
+  <input type="hidden" id="edit" name="edit" value="true">
+  <label>
+    Søk etter navn, startnummer eller klubb
+    <input type="text" name="search" id="search">
+  </label>
+  <button type="submit">Søk</button>
+</form>
+<div id="runner"></div>
+
 
 </div>
 <div id="updated"></div>
@@ -76,5 +88,15 @@
 
 </script>
 <script src="/lib/htmx.min.js"></script>
+<script>
+  document.body.addEventListener('htmx:beforeSwap', function(evt) {
+  // Allow 422 and 400 responses to swap
+  // We treat these as form validation errors
+  if (evt.detail.xhr.status === 422 || evt.detail.xhr.status === 400) {
+    evt.detail.shouldSwap = true;
+    evt.detail.isError = false;
+  }
+});
+</script>
 </body>
 </html>
\ No newline at end of file
diff --git a/import_runners.php b/import_runners.php
index 41759a5..44eb6b2 100644
--- a/import_runners.php
+++ b/import_runners.php
@@ -11,7 +11,7 @@ class Runner
     public string $is_student;
     public array $splits;
 
-    function __construct($id, $name, $club, $course, $email, $phone, $is_student)
+    function __construct($id, $name, $club, $course, $email, $phone, $is_student, $line_in_csv)
     {
         if ($id == null) {
             $id = 0;
@@ -24,6 +24,7 @@ class Runner
         $this->email = $email;
         $this->phone = $phone;
         $this->is_student = $is_student;
+        $this->line_in_csv = $line_in_csv;
         $this->splits = [false, false, false];
     }
 
@@ -120,7 +121,7 @@ function read_runners_from_csv(){
     $csv_runners = str_getcsv($csv_runners, "\n");
     for ($i = 1; $i < count($csv_runners); $i++) {
         $line = str_getcsv($csv_runners[$i], ";");
-        array_push($runners, new Runner($line[0], $line[2], $line[5], $line[6], $line[3], $line[4], $line[7]));
+        array_push($runners, new Runner($line[0], $line[2], $line[5], $line[6], $line[3], $line[4], $line[7], $i));
     }