/////// Configure this part for the number of columns that you want /////////
$columns = 6; // number of columns you want
////////////// End of Configuration ////////////////
 
$page_s = explode("<ul>",wp_list_pages('title_li=&amp;echo=0&amp;child_of='.$post-&gt;ID)); // Get the number of links that we need to generate
 
$div_by = (int) (count($page_s) / $columns); // ...divisible by
for ($i = 1 ; $i <= $columns ; $i++) { // Loop through the desired number of columns
   if ($i == 1) { // If it's the first column
        echo "<ul style="float: left;">"; // Start making the first column (<ul>)
        for ($x = 0 ; $x <= ($div_by); $x++) { // Loop through all the links upto it's "divisibility"
             echo $page_s[$x].''; // show the first columns of with "X" number of links
        }
 
    echo "</ul>"; // end of the first column
}
 
else { // For the second column and further
   echo '<ul style="margin-left: 20px; float: left;">'; // Start building the column
   $link_num = $i * $div_by; // Get the number of links this column from this column
   $prev_link_num = $div_by * ($i-1); // Get the number of links from the previous column
 
   /* List all the links, but limit them from the previous column's total number of links and the number of links you ought to display which is once defined by "$div_by" */
 
   for ($j = ($div_by+1); ( ($j < count($page_s)) && ($j <= $link_num)) ; $j++) {
        if ($j > $prev_link_num) // We need to display the links that are not yet displayed
             echo $page_s[$j].''; // List all the links for this column
   }
 
   echo "</ul>"; // end of the column
}
}