There is a time limit in the Half Marathon. You must maintain a pace of at least 13 minutes per mile.
You will need to get to SW Terwilliger and Hamilton Terrace by 11:40 AM for the Shamrock Half. That intersection is near the 9-mile mark. If you don’t reach that intersection in time, a Portland Police officer will direct you to turn right onto Hamilton and go down the hill to SW Barbur where you can rejoin the route toward downtown.
This detour will result in shortening the course by about 3.7 miles. The course limit is strictly enforced as it is a condition of the event permit with the City of Portland.
Unfortunately, we do not allow early starts for any Shamrock distances because of safety concerns.