Copy and paste this HTML into your website code:
<iframe src="https://hiiker.app/trails/germany/kaiserslautern/waldlaufparcours-kaiserslautern-gelb/iframe" title="Waldlaufparcours Kaiserslautern Gelb | Hiiker" referrerpolicy="origin-when-cross-origin" style="width: 100%; aspect-ratio: 4/3; max-width:800px;"></iframe>