Location: Eastman Lake, Raymond, CA
Schedule
09:00 AM Check-in Open
09:30 PM Starts (2.5 minute time interval)
12:01 PM Starts Close
01:30 PM Courses Close
This is an NRE TrailO event coordinated by LAOC, BAOC, and TerraLoco . This will be a combined TempO and PreO event. The combined score will count as one score toward the Golden State Orienteering Champs. The TempO and PreO will be ranked separately for the NRE. There will be Open Class, P-Class, and Junior Class. The event also serves as preparation for the WTOC 2027 which will be hosted in November 2027 by LAOC and OUSA in LA County (www.wtoc2027.com).
Registration: Registration for TrailO is included with the full 4 event package or as part of a Saturday package that includes the Middle race. You may also register separately for the TrailO NRE. Pricing is on the Registration page.
TrailO Classes (for NRE purposes):
Open
P-class - for those who have a permanent disability that significantly reduces their mobility
Junior - 20 and under on December 31, 2026
The TrailO will be a single combined score for the GSOC scoring but will be split into PreO and TempO for ranking purposes.
TrailO Instructions: coming soon
Directions to the Chowchilla Recreation Area Day Use shelter:
Parking Fee of $10 per vehicle, unless you are camping there.
GPS: 37.223262, -119.985127;
From the North, exit CA Highway 99 in Chowchilla at exit 170, CA Hwy 233/Robertson Blvd. Turn left, and take this road which becomes Avenue 26 all the way to a T-junction after almost 13 miles. Turn left onto Road 29. Make sure to stop along the way and buy your day pass where the pay station is signed, unless you're camping at Eastman Lake! After about 7 miles, turn left for the Chowchilla Recreation Area. Go about 1.5 miles, bearing right at each intersection, until you get to the parking area for the day-use area.
From the South, exit CA Highway 99 just north of Madera at exit 159 for Avenue 18 1/2, make a right turn, and you'll hit a T-junction quickly at Road 24, and turn left onto Road 24. After 7.5 miles, you'll hit a T-junction at Avenue 26, turn right onto Avenue 26. Go 5 miles to another T-junction at Road 29. Turn left onto Road 29. Make sure to stop along the way and buy your day pass where the pay station is signed, unless you're camping at Eastman Lake! After about 7 miles, turn left for the Chowchilla Recreation Area. Go about 1.5 miles, bearing right at each intersection, until you get to the parking area for the day-use area.
Course Stats: TBA
Walk to the Start: TBA
Terrain: Eastman Lake is a U.S. Army Corps of Engineers reservoir fringed by gently rolling hills peppered with lots of rock features and savannah-like vegetation.
Map: created by Rex Winterbottom, is new for the event, ISOM, 1:5000 scale for all courses, 5m contours.
TOE-punch: will be used. It is a version of electronic punching designed specifically for TrailO.
Course Designer: Clare Durand