There are 200 openings remaining in Sunday's OC Marathon, as well as spots available in the half-marathon and 5K races.
Online registration is available until Wednesday night at http://www.ocmarathon.com.
On-site registration will be available during the Active Lifestyle Expo, which runs Friday and Saturday at the OC Fair & Event Center in Costa Mesa.
The expo is free to attend, but there are parking fees, that also apply for race day. There is a charge of $8 for preferred parking or $5 for general parking. Preferred parking for race day can be purchased for $5 at the expo.
The expo hours are 3 p.m. to 7 p.m. on Friday and 9 a.m. to 6 p.m. on Saturday.
The OC Marathon's "Kids Run the OC" will take place Saturday from 9 a.m. to noon at the OC Fair & Events Center.
The kids run, in its third year, is an obesity prevention program that is on pace to host a record number of schools and kids.
The event is a mile run. Those who started the program earlier will have accumulated the equivalent of 25.2 miles of activity through training.
More information about the kids run can be found at http://www.kidsruntheocmarathon.org.
— From staff reports