The club was founded in 1902 as Racing Club de Calais. RC Calais had excellent results in the first editions of the Coupe de France, taking part in the quarter-finals of the competition in 1921, the last 8 in 1922 and the last 16 in 1923, 1924, 1925, 1926 and 1930. In 1921 Calais even beat CASG Paris in the second round 3–2. The club joined the professional ranks in 1933. Lack of sufficient financial resources, Calais opted to give up its professional status in 1938, which remain the only 5 years of professional football in Calais. RC Calais remained in the amateur divisions, rejoining the CFA in 1962 but the following years were spent oscillating between the CFA and Division d'Honneur.
Union Sportive
Union Sportive was founded after the war in 1947, after a merger of two local clubs. Its main successes were reaching the last 32 of Coupe de France and notable appearances in Coupe Gambardella.
Merger
Racing Club was merged with Union Sportive in 1974, renamed as Calais Racing Union Football Club to reflect the names of the 2 clubs, and was given both the clubs' colours. Before the merger derby matches between the two attracted up to 5000 fans.
1999–2000 Coupe de France
Calais RUFC entered the international spotlight during their run to the final of the 2000 Coupe de France, under Spanish coach Ladislas Lozano. Made up of teachers, dock workers and office clerks, Calais' cup run saw the team defeat first division teams Racing Strasbourg and Bordeaux. They eventually lost 2–1 to Nantes in the final at the Stade de France in Paris on 7 May 2000, despite leading 1–0 at half-time.
Recent history
The club played their first match in their new Stade de l'Épopée on 27 September 2008, losing 4–1 to Laval in a Championnat National match. Calais were relegated from the Championnat National at the end of the 2008–09 season, which would have resulted in them playing in the CFA, but on 14 July 2009, it was announced by the DNCG that Calais RUFC had been relegated to the CFA 2 due to administrative reasons. On 17 April 2010, the club broke the attendance record for a CFA 2 game, which had previously stood at 3,078. The game against Wasquehal had an attendance of around 4,000. On 15 May 2010, CRUFC won the CFA 2 Group A by defeating Gravelines 2–0, with Alexandre Danset scoring both of the goals. They therefore qualified to compete in the CFA for the 2010–11 season. However, on 3 June 2010, the club were placed into liquidation by the Boulogne central court, and the FFF subsequently denied the club promotion. They again won their group in the 2010−11 CFA 2 season, and were again denied promotion by the FFF. They remained in CFA 2 until the 2013–14 season, when they were promoted to CFA as one of the best runners up. In the 2016–17 season they finished bottom of CFA group B and were relegated, having had 7 points deducted for various reasons during the season. Subsequently, the FFF gave them an Administrative relegation, meaning they will play the 2017–18 season at Regional level at best.
