Sept 20-21, 2025 Bitteroot Weekend, Missoula, Montana
pre-registration required.
Event Website.
Sun, Sept 21, 2025 MVOC "Harvest-O", Grant Park, Centerville, Ohio
Organized by Miami Valley Orienteering Club (MVOC). Starts 12-2, range of courses.
See MVOC website for more details (This event is definitely on even if MVOC site still says "tentative")
Location: Normandy School, Centerville, OH 45458.
Locator map
Saturday, Sept 27, 2025 OLOU Urban O, Louisville, Kentucky
3 hour score-O in downtown Louisville. Maps distributed at 8:30, Mass start at 9. 3 hour time limit. Trivia format (answer a question about each location). Start / Check-in at North side of Louisville Slugger Field Parking Lot. Advance pre-registration required. For more information, visit the
Orienteering Louisville website
Sunday, Sept 28, 2025 ICO Corn Maze Orienteering - Lafayette, IN
For more information, visit the
ICO website
Saturday, Oct 4, 2025 Hisey Park, Waynesville OH
Hisey Forest Festival and other activities in the park. In cooperation with Warren County Parks.
Hisey Park. 5443 Middletown Road, Corwin, OH 45068. GPS 39.498870. -84.094142
Oct 4 and 5, 2025 Eastwood Park, Dayton, Ohio
Wagner Subaru Great Outdoor Experience - This is an outdoor expo featuring a wide range of exhibitors and outdoor activities. Tentatively, MVOC and OCIN may be jointly operating an exhibit, and possibly a easy demo orienteering course. More details to come soon.
Saturday 11 am - 10 pm; Sunday 11 am - 5 pm.
Oct 11-13, 2025 OUSA Individual Nationals, Boston, MA
pre-registration required.
Event Website.
Sun, Oct 11, 2025 COO Charles Alley Park, Lancaster, Ohio
Central Ohio Orienteers (COO),
COO website
Sunday, Oct 12, 2025 Corn Maze Orienteering, New Paris, Ohio
Join us for OCIN's first ever Corn Maze Orienteering at Today's Harvest, New Paris, Ohio. Orienteering starts at 5 pm. Come early to enjoy numerous other activities and the country store, which will be closing at 5. After 5, we will have exclusive use of the maze, but other activities will be closed.
Online pre-registration through Event Reg coming soon.
Location: Today's Harvest, East of Richmaond, Indiana, just east of the iNdiana/Ohio State Line. On the northeast corner of US 40 and OH 320. 5859 State Route 320, New Paris, OH 45347
Oct 18-19, 2025 Petrified Forest Rogaine
pre-registration required. 4 hours score-style courses each day at Petrified Forest National Park.
Event Website.
Sun, Oct 19, 2025 MVOC "Pumpkin Hunt", Caesar Creek State Park, Waynseville, Ohio
Organized by Miami Valley Orienteering Club (MVOC). Starts 12-2, range of courses.
See MVOC website for more details
Saturday, Oct 25, 2025 ICO event, IN
For more information, visit the
ICO website
November, 2025 thru March, 2026 OCIN TROL and WARS Season Pass
Season passes give
FREE entry to all league events from November 2025 thru March 2026, plus pre-season events in October! Link to purchase 2025-2026 passes is coming soon!
late October, 2025 MetroParks of Butler County
Adventure with a map! Participants get a detailed map and try to locate a series of control points shown on the map. Suitable for all ages, you may compete for the fastest time, or just enjoy a leisurely hike, while using our map to explore the park. There will be five different courses of varying difficulty and length - there is one suitable for every adventurer.
The easy course,
Trail of Treats, is designed for young children, and upon finishing the course, children get to select a toy, book, or pack of candy to take home. The Trail of Treats costs $4 per child with a $10 family maximum; adults may accompany young children at no charge. Costumes are encouraged, but expect to possibly get dirty, especially if it is a wet day.
Older children and adults may also choose to try one of the more difficult courses; the fee is $10 per person. You may do multiple courses at no additional charge.
Sun, Nov 2, 2025 COO Battelle-Darby, Darbyville, Ohio
Central Ohio Orienteers (COO),
COO website
Sat, November 8, 2025 East Fork, Indian Mound Shelter
TENTATIVE - Full range of courses from white thru red, for all ages. This event will include a special competition for JROTC cadets. (Co-sponsored by Live Oaks JROTC). Starts are open from 10 am to 1 pm. Control pickup begins at 3 pm.
Park entry or vehicle permit fees: none.
Restroom facilities:portable toilet.
Event center: open sided shelter
3294 Elklick Rd, Bethel, OH 45106. Enter park off Bantam Rd and follow orange and white "orienteering" signs to the Indian Mound Shelter.
Locator map GPS 39.012345, -84.133785
Locator map
Sat, Nov 15, 2025 TROL / WARS Series #1, Camp Butterworth, Maineville, Ohio
Adventure with a map! Participants get a detailed map and try to locate a series of control points shown on the map. Suitable for all ages, you may compete for the fastest time, or just enjoy a leisurely hike, while using our map to explore the park. There will be six different courses of varying difficulty and length - there is one suitable for every adventurer.
Park entry or vehicle permit fees: none.
Restroom facilities: modern indoors.
Event Center: indoors but minimally heated building.
Special note: This is a girl scout camp (privately owned); no dogs please; certified service animals only.
Camp Butterworth, 8551 Butterworth Rd, Maineville, OH 45039. GPS 39.313973, -84.248461.
Locator Map
Sun, Nov 16, 2025 MVOC "Turkey Hunt", George Rogers Clark Park, Springfield, Ohio
Organized by Miami Valley Orienteering Club (MVOC). Starts 12-2, range of courses.
See MVOC website for more details
Sat, Nov 22, 2025 TROL / WARS Series #2, Diamond Oaks, Dent, Ohio
Adventure with a map! Participants get a detailed map and try to locate a series of control points shown on the map. Suitable for all ages, you may compete for the fastest time, or just enjoy a leisurely hike, while using our map to explore the park. There will be six different courses of varying difficulty and length - there is one suitable for every adventurer.
Nov 29-30, 2025 TROL Training Day and TROL / WARS Series
Location TBA - Adventure with a map! Participants get a detailed map and try to locate a series of control points shown on the map. Suitable for all ages, you may compete for the fastest time, or just enjoy a leisurely hike, while using our map to explore the park. There will be six different courses of varying difficulty and length - there is one suitable for every adventurer.
Sat, Dec 6, 2025 TROL / WARS Series Patricia Allyn Park, Lebanon, OH
NJROTC Area 14 and 15 Championships
Adventure with a map! Participants get a detailed map and try to locate a series of control points shown on the map. Suitable for all ages, you may compete for the fastest time, or just enjoy a leisurely hike, while using our map to explore the park. There will be six different courses of varying difficulty and length - there is one suitable for every adventurer.
Range of courses from white through red.
pre-registration information coming soon. Free for TROL and WARS season passholders. JROTC units should use a spreadsheet entry form - Contact Captain Scott Eberwine at Hamilton HS NJROTC.
Patricia Allyn Park is located Ohio Route 48 north of Lebanon, Ohio (south of Centerville, Ohio), just south of OH 73. 7266 Ohio 48, Springboro, OH. GPS 39.590655, -84.161442
Sat, Dec 6, 2025 MVOC Night Score-O, Cricket Holler, Dayton, Ohio
TENTATIVE - Organized by Miami Valley Orienteering Club (MVOC). Mass start at 6 pm.
See MVOC website for more details
Sat, Dec 13, 2025 COO Scioto-Audubon MetroPark, Whittier Peninsula, Columbus, Ohio
Mass Start event, see the Central Ohio Orienteers (COO),
COO website
Dec 13 or 14, 2025 tentative ICO at Story West, Story, IN
Tentatively, these will be the courses from the cancelled day of 2025 Flying Pig. tentative, permit not yet approved. For more information, visit the
ICO website
Jan, 2026 Georgia Navigator Cup, Chattahoochee Bend State Park, GA
pre-registration required. Details coming soon. Normal format is: Friday Middle Distance Race. 2-stage Classic Distance races on Sat and Sun (full range of courses). The annual Mal Harding Extreme-O on MLK Monday.
March 20-22, 2026 US Individual Nationals, Maryland
pre-registration required.
Event Website.
April 10-12, 2026 OCIN Flying Pig XXVIII, OUSA 2026 Junior Nationals
. All three races are NRE sanctioned.
Friday April 10 - Afternoon Middle Distance NRE (National Ranking Event) at Hueston Woods State Park, Oxford, Ohio
Saturday - Sunday, April 11-12 - - OUSA Junior Nationals - Two-Day Classic at Mounds State Recreation Area, Brookville, Indiana
Early
lodging information and room blocks will be posted soon. Spring weekends in the college town of Oxford, Ohio will be busy. The good news is two new hotels are opening soon in Oxford (Fairfield Inn opens this August, Holiday Inn Express is supposed to open before the Pig)
Embargo At this time, all parts of Mounds State Recreation Area are embargoed for orienteering events and training, except you may use the campground and beach. You may drive the paved park roads to access the campgrounds, beach and boat ramps.
Embargo At this time, all parts of Hueston Woods State Park are embargoed for orienteering events and training, except you may use the campground, golf course, marina, beach, lodge, and cabins. You may drive the paved park roads to access the non-embargoed facilities. Please note that the mountain bike, equestrian, and disc golf facilities are embargoed and may not be used prior to the event on April 10.
