Event Overview

Speed SF – 8/26 Slip Happens Wednesday 5pm-10pm is a timed cone-course driving competition presented by Speedsf.com at Sonoma Raceway. The scheduled date is 2026-08-26.

Schedule and Format

• 8/26 (Wednesday Night): 5:30 pm-10 pm.
• Not unlimited smoke sessions.
• 5:30 pm and 10:00 pm.
• Three run groups.
• Multiple drivers may not share the same run group.

Entry Fees and Registration

• $175 / Driver (Early Bird Discount available $30 off)

Driver and Vehicle Requirements

• Experienced drivers refining throttle modulation.
• Controlled oversteer is permitted in designated sections, with safety and course flow as the priority.
• Event requirements.
• Requirements:
• Drivers and passengers must be at least 18 years old.
• Sound limit: 103 dB Strictly Enforced.
• Helmet requirement: SA2020+ /M2020+ , rental available.
• Closed-toed shoes, pants (no shorts), shirt (no tank top)
• A roll bar is recommended for convertibles.

Venue

29355 Arnold Drive, Sonoma, CA 95476

Official Event Information

View the organizer’s official event information.