NBA owners and players failed to reach a new labor deal after approximately seven hours of conversation on Saturday.
The length of the meeting was the longest since the lockout began on July 1.
The sides are expected to meet again on Monday - with less than one month remaining before the scheduled start of the regular season.
"We're still miles apart,” union executive director Billy Hunter said. “There’s a huge gap that I don’t know if we’re going to be able to close or not."
NBA commissioner David Stern did not announce any new cancellations on Saturday.
"Our desire would be to not cancel, and we had been hopeful that this weekend would be a broader marker, but for reasons which we understand, the players suggested that we resume on Monday, and we said ‘fine,'" Stern said.
Owners are asking for a hard cap, while the players steadfastly wish to keep the current soft cap system in place.
The opening of training camps has been postponed and the first week of exhibition games canceled. Any more delays would make it unrealistic for a deal to be completed, an accelerated free agency period and an abbreviated training camp in order to start the season on time.