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See also:
| Apr 1–3 | OCIN Flying Pig XXIV - 2022 Junior Nationals | |
| Apr 3 | SMOC Huron Meadows | |
| Apr 9–10 | ICO Conquer the Crossroads 6, 12, 24 hr Rogaine | |
| Apr 10 | Blue Mound State Park | |
| Apr 16 | SMOC Chilson Easter Egg-O | |
| Apr 24 | TriState Sprint Orienteering Championship | |
| Apr 24 | SMOC Bishop Lake | |
| May 1 | GREENBUSH | |
| May 1 | OCIN St Patrick's Park | |