Stags raced into a 2-0 lead inside the opening ten minutes before taking a 3-0 lead into the break.
They comfortably held on to that lead in the second half to claim three more impressive points.
Our photographic team of Chris and Jeanette Holloway and David Lowndes took these pictures of those in the away end.
Get more Stags news over on our website eveery day.
1. Peterborough 0 Stags 3
Mansfield Town fans watch the brilliant win at Peterborough United. Photo: Chris and Jeanette Holloway
2. Peterborough 0 Stags 3
Mansfield Town fans watch the brilliant win at Peterborough United. Photo: Chris and Jeanette Holloway
3. Peterborough 0 Stags 3
Mansfield Town fans watch the brilliant win at Peterborough United. Photo: Chris and Jeanette Holloway
4. Peterborough 0 Stags 3
Mansfield Town fans watch the brilliant win at Peterborough United. Photo: Chris and Jeanette Holloway