Managed to find this over on Wikiloc, courtesy of Joe. 2007 was the last time the challenge was held.
It omitted Benbrack and included Binn an tSaighdiúra as the Twelfth.
If you're doing this one and think there's just 1,535m gain in it, you'll get some shock to the system.
You can add another 1,000m to it.