Lately there have been a ton of new events, organizations, and tracks/venues popping up so I figured it'd be helpful to somewhat organize some info. If I'm missing anything, please let me know!
TRACKS

NEW! Locks Racing Ranch @locksracingranch - Dixon, CA
In development. With input from @animaljuju and an awesome proposed circuit with dozens of different layout possibilities, they are currently in the fundraising stage. Donate here.

NEW! NASA Crows Landing Airport @dafttuning @86till_infinity - Crows Landing, CA

NEW! ProSolved Raceway @pro.solved.559 - Madera, CA
In development. Currently dirt rally/auto-x track with plans to eventually pave a drift circuit.

NEW! Redding Motorsports Park @reddingmotorsportspark - Redding, CA
Fun, technical, low speed kart tack

Salinas Municipal Airport @driftcentral - Salinas, CA

Sonoma Raceway @racesonoma - Sonoma, CA
Recently canceled Wednesday Night Drifting and said Winter Jam 2023 would be the last one, but who knows...

Thunderhill Raceway Park @thunderhillracewaypark - Willows, CA
Offering two tracks, one 2 mile, and one 3 mile (or combined 5 mile) as well as two skidpads, Thunderhill is easily the reigning champion of Northern California drifting by hosting at least one drift event a week all year long.
ORGANIZATIONS
Good Luck League @goodluckleague
Events:
• Practice Day - Open to all drivers, but with a main focus on beginners. Features a figure 8 and offers free instruction from experienced drivers.
• Battle Competition - Annual tandem competition for advanced drivers.
• Lucky Select - Invite-only event.
• Skidpad Social - Open event for more experienced drivers that features more technical layouts.
Track(s):
• Thunderhill - Willows, CA
Super D @superd_usa
Events:
• Super D Cup - Technical tandem drift competition.
• Super D Matsuri - Multi-day event that usually features international drivers.
• Super D NYE - Annual New Years Eve event at Thunderhill that features Thunderhill East and typically both skidpads.
Track(s):
• Thunderhill - Willows, CA
• Sonoma Raceway - Sonoma, CA
• AVS (Apple Valley Speedway) - Apple Valley, CA
• Spirit Peaks Raceway - Washington
• Meihan Sportsland - Japan
Guided Pilot @guidedpilot_official
Events:
• Arrive and Drive - Test and tune day.
• Arrive and Drive + Develop - Test and tune with expert instruction.
• Drift Rental + Instruction
• NorCal Allstars - Tandem drift competition
Track(s):
• Thunderhill - Willows, CA
• NEW! Redding Motorsport Park - Redding, CA
Drift Apocalypse @driftapocalypse
Events:
• Open drift days.
Track(s):
• Thunderhill - Willows, CA
Drift Central @driftcentral
Events:
• Open drift days.
Track(s):
• Salinas Municipal Airport - Salinas, CA
Recollection Auto Fashion @recollectionautofashion
Events:
• Annual invite-only event with emphasis on car styling.
Track(s):
• Thunderhill - Willows, CA
Dlux @onesexysilvia
Events:
• Open drift event with emphasis on car styling.
Track(s):
• Thunderhill - Willows, CA
Speed SF @speedsf_track_events
Events:
• Open drift days.
Track(s):
• Thunderhill - Willows, CA
• Sonoma Raceway - Sonoma, CA
NEW! Valley Drift Club @dafttuning @86till_infinity
Events:
• Member-only drift days.
Track(s):
• NEW! NASA Crows Landing Airport - Crows Landing, CA
NEW! ProSolved Raceway @pro.solved.559
In development. Currently dirt rally/auto-x track with plans to eventually pave a drift circuit.
Events:
• Open rally events
• Fundraising events
• ProSolved Freedom Fest - Tandem drift competition at HTM.
Track(s):
• ProSolved Raceway - Madera CA
• Willow Springs International Raceway - Rosamond, CA
• AVS (Apple Valley Speedway) - Apple Valley, CA
Drift Maybe @driftmaybe
Events:
• Open drift days.
Track(s):
• Thunderhill - Willows, CA
• AVS (Apple Valley Speedway) - Apple Valley, CA
Oh this is good