What missionary journeys did Timothy go on?

Answer 1

Timothy was with Paul on several of his trips including: Philippi, Thessalonica, and Beroea. (Acts 16:11-17:10) When angry mobs forced Paul to leave Beroea, he left Silas and Timothy behind to take care of the new group of Christians formed there. (Acts 17:13-15) Paul then sent word to Beroea, advising Timothy to visit the brothers at Thessalonica, to encourage them(1Thessalonians 3:1-3) Apparently rejoining Paul at Corinth, Timothy brought good news about the faithfulness and love of the Thessalonian Christians. (Ac 18:5; 1Thessalonians 3:6) 1Th 1:1; 2Th 1:1.

On Paul's third missionary journey (c. 52-56 C.E.), Timothy again traveled with him. (Acts 20:4.) At Ephesus (1Corinthians 16:8), Paul, in his first letter to the Corinthians, wrote: "I am sending Timothy to you, as he is my beloved and faithful child in the Lord; and he will put you in mind of my methods in connection with Christ Jesus, just as I am teaching everywhere in every congregation." (1Corinthians 4:17)
Timothy and Paul were together in Macedonia when the second letter to the Corinthians was written. (Acts 19:22; 2Corinthians 1:1; 2:13; 7:5-7)

Later, when Paul wrote to the Romans, apparently from Corinth, Timothy was with him.-Compare Romans 16:21, 23; 1Corinthians 1:14.
Timothy's name is included in letters written by Paul to the Philippians (1:1), Colossians (1:1), and Philemon (vs 1) during the apostle's first imprisonment at Rome for doing the preaching work. It appears that Timothy personally was imprisoned at Rome sometime within the period between the writing of the letter to the Philippians and the one to the Hebrews.-Philippians 2:19; Hebrews 13:23.

Answer 2

In his own writing, Paul says that he sent Timothy to Corinth and to Thessalonia, where he established the Christian community. Paul does not mention Timothy actually accompanying him on any of his own journeys. The Epistle to the Philippians also says that Paul will send Timothy there, but this is unreliable as the Epistle to the Philippians is considered by scholars to be a late first-century pseudo-Pauline letter.

Acts of the Apostles says that Timothy went to Athens, Macedonia, and Asia Sopater. This was during the Second Missionary Journey. However, the three journeys are only a convenient classification developed by students of Acts, but not really supported by Paul's own accounts. Some scholars dispute their historicity.