What missionary journeys did Timothy go on?

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.