| Cetus GP 5 pu | Espoo | Cetus | 2018-04-08 | 25 M |  |
| Kausikisat 2 | Seinäjoki | Seinäjoen Uimarit -58 | 2018-04-08 | 25 M | |
| UitaCup | Tampere | Uinti Tampere | 2018-04-08 | 25 M | |
| FSN Swiss Long Course Championships | Geneve, SUI | | 2018-04-08 | 50 M | |
| Cetus GP 5 pu masters | Espoo | Cetus | 2018-04-08 | 25 M | |
| KLL:n Satakunnan piirin uintim | Pori | PUS, Popy ja PTU | 2018-04-12 | 25 M | |
| Bergen Swim Festival 2018 | Bergen, Norja | Hordaland Svømmekrets | 2018-04-13 | 50 M | |
| Swim Cup Eindhoven | Eindhoven | | 2018-04-13 | 50 M | |
| Elixia Games | Vantaa | Vanders | 2018-04-14 | 50 M | |
| Kvarken Games | Vaasa | Vaasan Uimaseura-Vasa Simsällskap | 2018-04-14 | 50 M | |
| 35th Tallinn Open Masters Championships | Tallinn | Meisterujumise U-Klubi | 2018-04-14 | 25 M | |
| Baden-Württembergische Meisterschaften | Heidelberg | LSV Baden | 2018-04-14 | 50 M | |
| Swiss Club Championships | Uster, SUI | | 2018-04-14 | 50 M | |
| Tuula Kara | Somero | Someron Esa | 2018-04-15 | 25 M | |
| N&EL L1 National Qualifying Meet | London, GBR | | 2018-04-15 | 50 M | |
| 2018 PC OAPB C/B/BB+ | USA | | 2018-04-15 | 50 M | |
| Nelisatasen vaparit | Turku | Åbo Simkubb-Uintiklubi Turku & Aurajoen Uinti | 2018-04-20 | 50 M | |
| NE YNS Team Specialty Meet | | | 2018-04-20 | 50 M | |
| Lohi-Cup 8 | Oulu | Oulun Lohet | 2018-04-21 | 50 M | |
| Varkauden Kevätuinnit 2018 | Varkaus | VarU | 2018-04-21 | 25 M | |
