Change the back link for just a specific View ID

gv-change-back-link.php

<?php 
add_action( 'gravityview/template/links/back/url', 'gv_change_back_link', 10, 2 );
/**
 * Modify the back link URL for a specific View
 * 
 * @param string $href The original back link
 * @param \GV\Template_Context The current context
 *
 * @return string Modified URL, if View ID equals 105
 */
function gv_change_back_link( $href = '', $context = null ) {
	if( 105 === $context->view->ID ) {
		return 'https://example.com/my-custom-page/';
	}
	
	return $href;
}