The Challenge Trophy was launched in 2012 and is open to teams from the National Conference League.
The opening round kicks off in April and culminates in a final which is played in Manchester on the day of the Betfred Super League Grand Final as part of Super League's showpiece day.
2016: Rochdale Mayfield 24-20 Hunslet Club Parkside
2015: Leigh Miners Rangers 32 v 22 Wath Brow Hornets
2014: East Leeds 16 v 36 West Hull
2013: Leigh Miners Rangers 42 v 14 Wigan St Patricks
2012: Leigh Miners Rangers 32 v 24 Egremont Rangers
The 2016 Conference Challenge Trophy Final - drama to the last! pic.twitter.com/6FV2tHmVlL— The RFL (@TheRFL) October 10, 2016