| Date | Name | Type | Location | Details |
| January | ||||
| Sun 24 Jan | Wheelworx Duathlon Race Series (Race 1) |  | Punchestown Racecourse Kildare  | |
| February | ||||
| Sun 07 Feb | LTC Duathlon (Race 1) | | Limerick City Limerick  | |
| Sun 07 Feb | AliveOutside.ie Duathlon Series (Race 1) | | Phoenix Park, Dublin Dublin | |
| Sun 21 Feb | LTC Duathlon (Race 2) | | Limerick City Limerick | |
| Sat 27 Feb | Fastnet Duathlon | | Ballydehob Cork | |
| Sun 28 Feb | AliveOutside.ie Duathlon Series (Race 2) | | Phoenix Park Dublin | |
| March | ||||
| Sat 06 Mar | Puck Warriors Duathlon | | Killorglin Kerry | |
| Sun 07 Mar | Kids Duathlon Races | | Clarenbridge, Galway Galway  | |
| Sun 07 Mar | Predator Duathlon | | Clarenbridge Galway | |
| Sun 14 Mar | Wheelworx Duathlon Race Series (Race 3) | | Punchestown Racecourse Kildare | |
| Sun 21 Mar | LTC Duathlon (Race 3) | | Limerick City Limerick | |
| Sat 27 Mar | Waterford Duathlon (Race 1) | | Butlerstown Waterford | |
| Sun 28 Mar | AliveOutside.ie Duathlon Series (Race 3) | | Phoenix Park Dublin | |
| April | ||||
| Fri 02 Apr | Alive Outside Aquathlon at Shoreline Leisure Centre |  | Greystones Wicklow | |
| Fri 02 Apr | Wheelworx Duathlon Race Series (Race 2) | | Punchestown Racecourse Kildare | |
| Sat 10 Apr | Try Laois |  | PortLaoise Laois | |
| Sun 11 Apr | Jealous Wall Duathlon | | Mullingar Westmeath | |
| Sun 11 Apr | Rock Duathlon | | Ashford Co Wicklow Wicklow | |
| Sat 17 Apr | Mid Ulster Duathlon | | Magherfelt Derry  | |
| Sat 17 Apr | North Tipp Sprint  | | Nenagh Tipperary | |
| Sun 18 Apr | The Crystal Clear Triathlon | | Waterford Waterford | |
| Sat 24 Apr | Waterford Duathlon (Race 2) | | Fenor Waterford | |
| Sun 25 Apr | Northwest Duathlon  | | Burnfoot Donegal | |
| May | ||||
| Sat 01 May | Waterville Triathlon | | Waterville Kerry | |
| Sun 02 May | Joey Hannon Memorial Triathlon | | Limerick Limerick | |
| Sun 02 May | Joey Hannon Try-a-Tri | | Limerick Limerick | |
| Sun 02 May | Laochra Arainn | | Arainn Mhor Island Donegal | |
| Sun 09 May | Velvet Strand Sprint Triathlon | | Portmarnock Dublin | |
| Sun 09 May | Kidathon | | Mullingar Westmeath | |
| Tue 11 May | Hollingsworth - Pulse Aquathlon Series (Race 1) | | Clogherhead Louth | |
| Sat 15 May | Roe Valley Sprint | | Limavady Derry | |
| Sun 16 May | Fingal Junior Sprint Aquathlon | | Blanchardstown Dublin | |
| Sun 16 May | Fingal Sprint Triathlon | | Blanchardstown Dublin | |
| Sat 22 May | Ulster Bank Valentia Island Triathlon | | Knightstown Kerry | |
| Sat 29 May | 25.5 Triathlon Series Westport | | Westport Mayo | |
| Sat 29 May | Tri3 Sprint Triathlon Series | | Galway City | |
| Sat 29 May | Kids Aquathon | | Belfast Antrim | |
| Sat 29 May | Alive Outside Sprint Triathlon at Slane Castle | | Slane Meath | |
| Sun 30 May | Northwest Sprint/Liam Ball | | Derry City Derry | |
| June | ||||
| Wed 02 Jun | Midland Aquathon Series (Race 1) | | Mullingar Westmeath | |
| Sat 05 Jun | Try Athy | | Athy Kildare | |
| Sat 05 Jun | Tri-Burgh | | Louisburgh Mayo | |
| Sat 05 Jun | Crooked Lake Triathlon | | Camlough Armagh | |
| Sat 05 Jun | TriAthy Olympic | | Athy Kildare | |
| Sun 06 Jun | TriAthy Sprint | | Athy Kildare | |
| Tue 08 Jun | Hollingsworth - Pulse Aquathlon Series (Race 2) | | Clogherhead Louth | |
| Wed 09 Jun | Midland Aquathon Series (Race 2) | | Mullingar Westmeath | |
| Sat 12 Jun | Fastnet Triathlon | | Schull Cork | |
| Sat 12 Jun | The Rock Triathlon | | Blackrock, Louth. Louth | |
| Sun 13 Jun | Causeway Coast Triathlon | | Portrush Antrim | |
| Tue 15 Jun | Midland Aquathon Series (Race 3) | | Mullingar Westmeath | |
| Wed 16 Jun | Wicklow Tri Amphibian King Aquathlon Series (Race 1) | | Bray Wicklow | |
| Sat 19 Jun | Fighting Cancer Triathlon | | Mullingar Westmeath | |
| Sat 19 Jun | Hook or by Crook Triathlon | | Dunmore East Waterford | |
| Sat 19 Jun | Mullaghmore Triathlon | | Mullaghmore Sligo | |
| Sat 19 Jun | Sive Triathlon | | Cahirciveen Kerry | |
| Sat 26 Jun | Kilkee Hell of the West | | Kilkee Clare | |
| Sun 27 Jun | Waterways Ireland Fermanagh LakelandTriathlon | | Waterfoot Fermanagh | |
| Sun 27 Jun | 25.5 Triathlon Series Portumna | | Portumna Galway | |
| July | ||||
| Sat 03 Jul | ITU European Triathlon Championships (Agegroup) | | Athlone Westmeath | |
| Sat 03 Jul | Waterways Ireland triAthlone (sprint distance) | | Athlone Westmeath | |
| Sat 03 Jul | Waterways Ireland triAthlone Try a Tri | | Athlone Westmeath | |
| Sat 03 Jul | ITU European Triathlon Championships (Agegroup) | | Athlone Westmeath | |
| Sun 04 Jul | ITU European Triathlon Championships (ELITE) | | Athlone Westmeath | |
| Sun 04 Jul | Waterways Ireland triAthlone (standard distance) | | Athlone Westmeath | |
| Sat 10 Jul | 25.5 Triathlon Series Lanesborough | | Lanesborough | |
| Sat 10 Jul | Tri3 Sprint Triathlon Series | | Cahir Tipperary | |
| Sat 10 Jul | PowerAde Salmon Run Triathlon | | Ballina Mayo | |
| Sat 10 Jul | Junior Aquathon Championships | | Port Laoise Laois | |
| Sun 11 Jul | 3D Super Aquathlon | | Skerries Dublin | |
| Wed 14 Jul | ATC Aquathon (Race 1) | | Coosan Point, Athlone Westmeath | |
| Sat 17 Jul | Carrick-on-Suir Triathlon/Tryathlon | | Carrick-on-Suir Tipperary | |
| Sat 17 Jul | Galway Triathlon | | Galway Galway | |
| Sat 17 Jul | Muckno Mania Triathlon | | Castleblayney Monaghan | |
| Sat 17 Jul | Hollingsworth - Pulse Aquathlon Series (Race 3) | | Clogherhead Louth | |
| Sat 17 Jul | Lough Hyne Challenge | | Baltimore, Co. Cork Cork | |
| Wed 21 Jul | ATC Aquathon (Race 2) | | Coosan Point, Athlone Westmeath | |
| Wed 21 Jul | Wicklow Tri Amphibian King Aquathlon Series (Race 2) | | Bray Wicklow | |
| Sat 24 Jul | Big Splash Triathlon | | Portglenone Antrim | |
| Sat 24 Jul | King of the Hill | | Kinsale Cork | |
| Sat 24 Jul | Tri Kilkenny (sprint) | | Kilkenny City Kilkenny | |
| Sat 24 Jul | Tri Kilkenny (standard) | | Kilkenny City Kilkenny | |
| Sun 25 Jul | Top Of The Mourne Triathlon | | Rostrevor Down | |
| Sun 25 Jul | 53 Degrees North Beast Of The East | | Lough Dan, Roundwood Wicklow | |
| Sun 25 Jul | The Humbert Challenge | | Swinford Mayo | |
| Sat 31 Jul | Lough Neagh Triathlon | | Ballyronan Marina Antrim | |
| Sat 31 Jul | Rosses Point Sprint | | Rosses point Sligo Sligo | |
| August | ||||
| Sun 01 Aug | City of Lisburn Aquathon | | Lisburn Antrim | |
| Sun 01 Aug | City of Lisburn Triathlon 2010 | | Lisburn Antrim | |
| Sun 01 Aug | Focus Ireland Tri at Dun Laoghaire | | Dun Laoghaire Dublin | |
| Sun 01 Aug | Tri795 | | Bunclody Wexford | |
| Sat 07 Aug | Mourne Triathlon | | Castlewellan Down | |
| Sat 07 Aug | Brian Boru Tri Challenge | | Killaloe Clare | |
| Sat 07 Aug | Little Bo Peep Triathlon | | Kenmare Kerry | |
| Sat 07 Aug | Hollingsworth - Pulse Triathlon | | Clogherhead/Port Beach Louth | |
| Sat 14 Aug | CK Triathlon | | Mullingar Westmeath | |
| Sun 15 Aug | TRALEE TRI KINGDOM COME | | Tralee Kerry | |
| Wed 18 Aug | Wicklow Tri Amphibian King Aquathlon Series (Race 3) | | Bray Wicklow | |
| Sat 21 Aug | Carlingford Legends Triathlon | | Carlingford Louth | |
| Sat 21 Aug | The Kingdom Series (The Navigator Fenit Race 2) | | Fenit,Tralee Kerry | |
| Sun 22 Aug | Half Ireman | | Groomsport Down | |
| Sun 22 Aug | Ireman 226 Challenge | | Groomsport Down | |
| Sun 22 Aug | The Lough Ree Monster Sprint Triathlon | | Portrunny Roscommon | |
| Sat 28 Aug | The Edge Sports Blackwater Triathlon 2010 | | Fermoy Co Cork Cork | |
| Sat 28 Aug | Kerry Head Triathlon | | Ballyheigue Kerry | |
| Sun 29 Aug | DCT Super Sprint | | Islandbridge/Phoenix Park Dublin | |
| Sun 29 Aug | Dublin City Triathlon | | Islandbridge/Phoenix Park Dublin | |
| September | ||||
| Sat 04 Sep | Tri3 Sprint Triathlon Series | | Kilrush Clare | |
| Sat 04 Sep | Youghal Triathlon | | Youghal Cork | |
| Sun 05 Sep | Lough Key Triathlon | | Boyle Roscommon | |
| Sun 05 Sep | Stenaline Triathlon | | VALLEY LEISURE CENTRE Antrim | |
| Sat 11 Sep | Quarryman Triathlon | | Summerhill Meath | |
| Sat 11 Sep | The Lost Sheep | | Kenmare Kerry | |
| Sun 12 Sep | Loughrea Sprint Triathlon | | Loughrea Galway | |
| Sat 18 Sep | Blacksod Point Triathlon | | Blacksod, Belmullet Mayo | |
| Sun 19 Sep | Clonakilty Duathlon | | Clonakilty Cork | |
| Sun 19 Sep | Éireman X | | Courtown Harbour Wexford | |
