Contradiction with Matthew 16:21
This verse suggests Jesus must go to Jerusalem instead of Galilee, which can be seen as a contradiction to the implication of immediately going to Galilee after resurrection in Mark 14:28.
Matthew 16:21: From that time forth began Jesus to shew unto his disciples, how that he must go unto Jerusalem, and suffer many things of the elders and chief priests and scribes, and be killed, and be raised again the third day.
Contradiction with Luke 24:49
Jesus instructs the disciples to stay in Jerusalem, which conflicts with Mark 14:28 where the instruction is to go to Galilee after resurrection.
Luke 24:49: And, behold, I send the promise of my Father upon you: but tarry ye in the city of Jerusalem, until ye be endued with power from on high.
Contradiction with Acts 1:4
This verse has Jesus telling the apostles not to leave Jerusalem, which contrasts with the direction in Mark 14:28 to head to Galilee.
Acts 1:4: And, being assembled together with [them], commanded them that they should not depart from Jerusalem, but wait for the promise of the Father, which, [saith he], ye have heard of me. [being...: or, eating together]
Contradiction with John 20:17
Jesus tells Mary Magdalene not to hold on to him since he hasn't ascended yet, which might seem contradictory in timing to the events that Mark 14:28 sets in Galilee post-resurrection.
John 20:17: Jesus saith unto her, Touch me not; for I am not yet ascended to my Father: but go to my brethren, and say unto them, I ascend unto my Father, and your Father; and [to] my God, and your God.