Long Bank is closed due to ice and snow between the A167 Durham Road / A1 / A6127 Newcastle Bank (Bowes Incline Angel Of The North) and Haigh Terrace.
The road is expected to remain closed into Saturday, January 26.
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White Rose flags and crowds half a dozen deep met the riders as they swept through the towns and villages of North Yorkshire.
The Black Cats boss has spoken to the media following his side's one nil defeat to Bournemouth which relegated them from the Premier League.
The Black Cats will play next season in the Championship after being relegated from the Premier League.