You can split the SiteMapNode like this
<siteMapNode
url="~/Home.aspx"
title="Title"
description="Default description"
/>
Zhao Ji Ma
Sincerely,
Microsoft Online Community Support
?Please remember to click ?Mark as Answer? on the post that helps you, and to click ?Unmark as Answer? if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread. ?