The event took place from 7pm to 7am at Rochdale AFC's Crown Oil Arena in Rochdale.
Liz Varey, Service Manager at the Petrus Hub, took part for her third year in a row. Liz said: "It was amazing that so many people gave up their Friday night to join us and experience a night under the stars.
"I spent a lot of the evening talking to people about the true reality for the people we work with. Despite how uncomfortable we all were, it was only for one night and we all returned to our warm, comfortable homes.
"It is easy to see why so many of Petrus' service users are physically and mentally exhausted. I struggled all weekend with the effects of that one night sleeping outside. My body is still aching, and the tiredness has not subsided.
"I appreciate more than ever the place that I call home, and the love and kindness I receive daily from family and friends".
Petrus would like to thank everyone who took part or has donated so far.