Leonard put in another impressive performance since returning from a hand injury that forced him to miss 15 games, with his seventh double-double of the season.
He was supported by Tony Parker who scored 18 points while veteran Tim Duncan added 16 second half points as the Spurs defeated the Nuggets for the fifth straight time.
Leonard said he feels like the Spurs are back on track.
“We all felt like we gave away some of those games in December.
??”We just have to win out these next games, get into a rhythm going into the All-Star break.”
Kenneth Faried had 26 points and 14 rebounds for the Nuggets while Arron Afflalo added 21 points.
Elsewhere, Russell Westbrook and Kevin Durant bagged 19 points apiece as the Oklahoma Thunder saw off the Miami Heat 94-86.
Durant also had eight rebounds and eight assists for the Thunder, who pass the .500 mark for the first time this season.
Reggie Jackson scored 16 points and Anthony Morrow added 12 for Oklahoma.
And despite injuring his elbow, Durant said he will be fit for Wednesday???s night game against the Washington Wizards.
He said: “I’ve fallen plenty of times. It’s just a little stinger.
“I just fell on my arm. I’ll be fine.”
Miami were led by 18 points from Dwayne Wade and 16 from Chris Bosh but it was not enough as they went down to their 13th defeat of the season at home.