It has taken them 26 years to reach that milestone and there have been some memorable matches along the way.
Here we pick out 17 significant fixtures from ther 699 played by Leeds in the regular round so far.
How many do you remember and which games would be on your list?
7. Rhinos 64 Castleford 12 (August 27, 2004)
Ali Lauitiiti is pictured on the attack as Rhinos secured the league leaders' shield, the first time they had topped since 1972, with a 12-try rout of Castleford. Photo: Gerard Binks
8. Rhinos 70 Wigan 0 (June18, 2005)
Two tries by Danny McGuire (pictured) helped Leeds to a record win over Wigan and their third 70-point haul of the season. Photo: Steve Riding
9. Rhinos 42 Bradford 38 (May 6, 2007, at Cardiff)
Kevin Sinfield's 80th-minute penalty hit the bar and an offside Jordan Tansey touched down to snatch Super League's most controversial win, at the first Magic Weekend. Photo: Steve Riding
10. Salford 24 Rhinos 30 (September 11, 2009)
Rhinos, with forward Carl Ablett at stand-off, hit back from 12-0 down to win their second league leaders' shield. Photo: Steve Riding
11. Crusaders 6 Rhinos 30 (January 29, 2010)
Aussie superstar Danny Buderus (pictured) made his debut as Rhinos got their season off to a winning start in blizzard conditions at Wrexham. Photo: Tony Johnson
12. Rhinos 24 Castleford 24 (July 17, 2014)
Kevin Sinfield was sent-off for the only time in his career as Castleford fought back to secure a draw at Headingley. Photo: Steve Riding