South Dakota: Application deadline for firearms antelope, Custer State Park antelope and tundra swan. Details: gfp.sd.gov.
Lake City: GPS scavenger hunt at Roy Lake State Park. GPS and geocaching basics. Details: gfp.sd.gov or 605-448-5474.
Pierre: RiverKid Sprint Triathlon at the Farm Island Rec Area. Details: gfp.sd.gov or 605-773-2885.
Aberdeen: HuntSAFE class at 6 p.m. at the Terry'Keefe Hunter Education Center at the Brown County Rifle Range. Class is the second of three classes for the August session. Details: Brown County GFP, 605-626-2391.
Waubay: Fishing tournament at Bitter Lake, 60-boat limit. Details: gfp.sd.gov or 605-947-5005.
North Dakota: Early Canada goose seasonpens and runs through Sept. 15, except in the Missouri River Zone where the season ends Sept. 7. Details: gf.nd.gov.
South Dakota: Archery antelope seasonpens and runs through Sept. 27, thenct. 14-31. Details: gfp.sd.gov.
Send your outdoors calendar information two weeks in advance to email@example.com.