A team spokesman confirmed late Sunday that Gore has spoken with coach Jim Harbaugh and has decided to practice while he attempts to negotiate a contract extension with the team. Gore is scheduled to earn $2.9 million in base salary and $2 million in a roster bonus during the final season of his current deal.
Under the terms of the NFL's new labor agreement, Gore is subject to $90,000 in fines for his holdout. The 49ers are off Monday, putting Gore back on the field with the team on Tuesday.
The former Miami Hurricane has led the 49ers in rushing in all six of his NFL seasons, but he is coming off a hip injury suffered in November.
The Associated Press contributed to this report.