Saturday, Oct 25, 2025 Eagle Creek, Indianapolis, IN
Saturday afternoon, Halloween themed event. For more information, visit the
ICO website
Sunday, Oct 26, 2025 Indian Creek, Reily, OH
Start times 11 am to 2 pm. Start a course any time between 11 and 2. 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.
Online pre-registration is encouraged for those doing regular courses. No pre-registration is needed for the Trail of Treats course. Free entry with 2025-26 TROL or WARS season pass.
Courses: Treats / White 1 km, 7 control points; yellow 2.4 km intermediate, orange 2.8 km advanced; brown 2.4 km short expert; green 4.6 km expert. Expert courses avoid the thickest vegetation.
This event is included in our 2025-26 TROL/WARS season pass, so entry is FREE if you purchase a
TROL season pass (HS student or younger) or
WARS season pass (adult above high school age)
In cooperation with
MetroParks of Butler County. Mayer Shelter, 6500 Springfield Rd, Oxford, OH 45056 GPS 39.439338, -84.766747. Arrive and start any time between 11 am and 2 pm. Please plan to finish your course(s) by 3:30 pm.
Wednesday, Oct 29, 2025 Rentschler Forest, Hamilton, OH
Twilight orienteering at Rentschler Forest, Condo Shelter. Start the course any time between 5 pm and 7 pm. Start early to finish with daylight; later starters should bring a flashlight or head lamp for a night navigation experience as darkness descends and the creatures of the night emerge. Courses close at 8 pm; you must check back in by 8 pm. pre-registration opening soon. 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.
Online pre-registration is encouraged for those doing regular courses. No pre-registration is needed for the Trail of Treats course. Free entry with 2025-26 TROL or WARS season pass.
This event is included in our 2025-26 TROL/WARS season pass, so entry is FREE if you purchase a
TROL season pass (HS student or younger) or
WARS season pass (adult above high school age)
In cooperation with
MetroParks of Butler County. Condo Shelter at Rentschler Forest, 5701 Reigart Rd, Hamilton, OH 45011. GPS 39.421155, -84.505103. Arrive and start any time between 5 pm and 7 pm. Please plan to finish your course(s) by 8 pm.
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!
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.
Join us for a post-event social, as soon as control pickup is completed. We always appreciate a few extra hands bringing in controls - many hands make post-event clean-up fast and easy.
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) and Ohio River Road Runners Club (ORRRC). MASS START at 12 Noon, 2 hour score-style course (go in any order, get as many as you can within 2 hours, controls have varying point values, you lose points if you are out over 2 hours).
See Event website for more details and pre-registration through Run Sign Up Free for ORRRC members and youth age 14 and under; $5 for older non-members.
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.
Join us for a post-event social at nearby Ron's Roost, a nearby favorite west-side restaurant, as soon as control pickup is completed. We always appreciate a few extra hands bringing in controls - many hands make post-event clean-up fast and easy.
Park entry or vehicle permit fees: none.
Restroom facilities: modern indoors.
Event Center: indoors.
Special note: School grounds: no pets, certified service animals only.
Diamond Oaks Career Campus, 6375 Harrison Ave, Cincinnati, OH 45247. GPS 39.186320, -84.655937
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
Sat Dec 13, 2025 tentative ICO at Story West, Story, IN
This will sue the area from the cancelled day of 2025 Flying Pig. tentative, permit not yet approved. For more information, visit the
ICO website
ICO has applied for this to be a one day National Ranking Event (NRE). Although it is a little farther from Cincinnati, we will probably make this the TROL/WARS event for this weekend.
Dec 31 and Jan 1, 2026 OCIN New Year's events, OH
Details 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 several different courses of varying difficulty and length - there is one suitable for every adventurer.
Range of courses
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.
May 31-June 5, 2026 Texas Junior Orienteering Camp, Bridgeport, Texas
Week-long adventure of orienteering courses, training, competitions and fun, for high school and younger students who are successfully completing orienteering courses at yellow level and above. Selective admission.
July 19-26, 2026 Silva O' Camp, Vidnava, Czech Republic
International orienteering training camp for youth 17 and under.
