The Edinburgh club defeated Dundee United 2-1 at home on Sunday to go two points clear of reigning Scottish champions Celtic at the top.
"We're delighted," BBC Sport quotes Fenlon as saying. "It's two or three times now we've been in that position so it's fantastic and it's great credit to the players to get themselves in that position.
"It was a point we spoke about at the start of the season to make sure this place (Easter Road) becomes difficult for teams like it used to be.
"Over the last couple of seasons it hasn't been hard enough for teams to come here and we want to make sure that if they get anything out of here they work really hard for it."
Hibernian currently have 24 points from 13 matches.