Raising domestic violence awareness. About 2.3 miles. $20-$25 per person. Parking $7 or free with a Regional Parks membership pass. Free parking on Montgomery Drive, short walk from the event. Registration: 9 a.m. Costume contest: 9:30 a.m. Run/Walk: 10 a.m. Spring Lake Regional Park. 393 Violetti Rd., Santa Rosa. (Meet-up: Swimming Lagoon Area.) tinyurl.com/49uusbs4.