Description: For this ZER-O event we are doing a variation of a special event called a dogbone. There will be ten controls, but each control has two flags (at different locations), for a total of 20 flags. You may visit the two flags for each control in either order, but you must do the controls in order. So you may end up going to 1B, 1A, 2A, 2B, 3B, 3A, etc., but not to either flag at control 2 before going to both flags at control 1. (In case you are wondering, the map will show the two circles for each flag at a control connected by a line, which ends up looking a little like a bone. Hence the name.)

The exercise is designed to force you to constantly think ahead and make route choices. And to make it more interesting, this will be a mass-start event, so you can practice not being distracted by what everyone else is doing. There are a total of 1,024 different routes (although I think only a few hundred are reasonable). Choose quickly; choose wisely. This format allows us to have a 4.5 km course in a relatively small park.

Schedule: 10 a.m. mass start, course closes at noon.

Where to Meet: Take I-5 to Exit 283 in Wilsonville. Go east on Wilsonville Road 0.5 mile to Memorial Drive. The Library will be on the corner. Turn right (south) on Memorial Drive, and take the first quick left into Murase Plaza. Do not drive down the hill. We will meet in the parking lot.

Post Event Potluck: Bring some food to share at a potluck lunch afterward.

Beginners: As at all CROC meets, beginners are welcome! Participants or the meet director will be happy to give you tips for getting started in the sport.

Cost: No charge

RSVP required: Please RSVP to Mike Poulsen  by 6pm, Friday, May 29, so that we have a map for you.

About the ZER-O Series: On all "ZER-O" dates (10th, 20th, 30th of the month) from May through September, CROC will offer practice courses -- some with added training exercises - in different Portland area parks. These are informal events, with no fees, no timing and no results posted.