[3] He next appeared in August when he was moved up to Listed class for the Prix du Haras de la Huderie at Deauville and won by three quarters of a length from Done Well.

He turned into the straight in third place before being switched to the outside where he showed good acceleration to take the lead 200m from the finish and win by three quarters of a length from the British-trained colt Montjoy.

[6] Pennekamp's status as the leading European two-year-old lasted only eight days: on 22 October Celtic Swing won the Racing Post Trophy by twelve lengths and was immediately made a short-priced favourite for the following year's 2000 Guineas and Derby.

[7] As a three-year-old Pennekamp was trained for the British Classic Races and prepared for a meeting with Celtic Swing in the 2000 Guineas at Newmarket by winning the Listed Prix Djebel at Évry on 15 April.

As in the Dewhurst Stakes, Jarnet held Pennekamp towards the back of the field before making his challenge in the last quarter mile.

[9] After the race Fabre paid tribute to the winner by saying "I honestly think that Pennekamp is a great horse", while Jarnet called his performance "marvelous".

[13] Pennekamp stood as a stallion for his owner's Darley breeding organisation at the Kildangan Stud near Monasterevin, County Kildare.