And so all good things must come to an end.
And after a decade competing together, with three gold and three silver Paralympic medals, five World Championship road titles and a bronze at last year's worlds in the bag, Katie-George Dunlevy and Eve McCrystal have now brought the curtain down on one of Irish sport's greatest pairings.
The final act was played out on Sunday at Paris 2024, with the pair taking silver in the women's B 3000m individual pursuit.
Dunlevy and McCrystal missed out on gold by 2.166 seconds to Britain's Sophie Unwin and her pilot Jenny Holl, having led for the first two-thirds of the final ride-off at the National Velodrome.
A time of 3:21.315 which was just under a second down on the mark they set in the morning's qualifying session. Afterwards they confirmed that was their final ride together.
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In many respects it was the perfect relationship, as Eve McCrystal outlined on RTÉ Radio's News at One: "We met up ten years ago. Katie was over in Swords when we met up and I was never on a tandem before. She had been to London Paralympics with a different pilot. I got on the bike in Swords, on all the different roundabouts I had to navigate and I said 'what am I doing?' But I really enjoyed it.
"I'm definitely a team player and I enjoyed the fun and the camaraderie that both of us had on the bike. We got on like a house on fire and have been through so much together. It is a phenomenal partnership."
McCrystal then went on to add that now is the right time to end the partnership.
"Ten years is a long time and I have two children that have grown up with this as well. I think it's time for me to put that aside and be proud of what I've done in my athletic career. I'm by no means finished; I love riding my bike. With Katie on the tandem, we've done so much now, it's nice to walk away on a high."
After shattering her collarbone at a World Cup road event in Italy earlier this year, Dunlevy was determined to put in the work to ensure she would be fully fit to take part in the French capital.
"When I was in hospital, I was determined to get back, I controlled what I could and worked hard to get back to fitness. I didn't want that to be a hindrance on my performance. I did everything I could to get fit and I was delighted I could put in a good ride with Eve.
"The qualifying ride was really important; we had to do the best race of our life which we did to secure the silver-gold ride-off. We just fell short in the end against GB. That was really down to a lack of track time.
"A silver is like a gold for us."
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