Cardiff Blues will kick off their European Challenge Cup campaign with a home clash against Lyon on Friday, October 13 (7pm).
The Blues were drawn alongside Top 14 outfits Lyon and Toulouse, and Sale Sharks from the Aviva Premiership in Pool Two of the competition.
Fixture dates and kick-off times have now been confirmed for the first four rounds of the competition.
After hosting Lyon at Cardiff Arms Park in Round One, the Blues will then travel to the south of France to face Toulouse.
They then face Sale in the December double headers before rounding off the group stages with Toulouse at home and then Lyon at Matmut Stadium de Gerland.
Cardiff Blues fixtures in the 2017-18 European Challenge Cup (all times local)
Round 1: Cardiff Blues v Lyon - Friday, October 13 (7pm)
Round 2: Stade Toulousain v Cardiff Blues – Friday, October 20 (9pm)
Round 3: Sale Sharks v Cardiff Blues – Saturday, December 9 (3pm)
Round 4: Cardiff Blues v Sale Sharks – Saturday, December 17 (3.15pm)
Round 5: Cardiff Blues v Stade Toulousain – 11/12/13/14, January
Round 6: Lyon v Cardiff Blues – 18/19/20/21 January