Below you will find the calendar for the 2015 Ulster XC Series
Calendar
| Round | Date | Location |
| 1 | Sunday 8 March 2015 | Kilbroney Park, Rostrevor |
| 2 | Sunday 12 April 2015 | Colebrooke Estate Fermanagh |
| 3 | Sunday 31 May 2015 | Lady Dixon Park, Belfast |
| 4 | Sunday 2 August 2015 | Castlewellan Forest |
| Sunday 23 August 2015 | (Ulster Championships) Colebrooke Estate Fermanagh | |
| 5 | Sunday 6 Sept 2015 | Craigavon Lakes |
The Ulster league will be based on the best 4 out of 5 rounds.
Round 4 will also be a round of the Irish National Points Series (NPS) 2015.
NOTE: Riders must compete in a minimum of 3 rounds of the Ulster series to be counted in the overall Ulster league for 2015.