The Big Sur coast has been burning.
The northern coast has more inland sections and more traffic.
The Oregon coast is great with great hiker/biker camping.
But - and ain't there always a big but - -
It's hard to access the Oregon coast quickly via public transportation.
If you are from Sac, you could take Amtrak north to Salem.
(Salem is easier to get into and out of than Portland.)
Then ride down out to the coast and down to Brookings.
There is a shuttle bus with connections to Eugene and Amtrak back.
Although you can rack your bikes to Coos Bay, you have to box them to Eugene.
And you'll have to box your bikes anyhoo for Amtrak.
Another option that has fewer connections is to ride from Salem out to the coast.
Then ride up the Umpqua Valley to Crater Lake and catch Amtrak at Klamath Falls.
The latter would give you coast plus mountains - not to mention easy connections.
Click on the Coast Starlight -
It's overnight to Salem getting in after lunch.
That would give you time to set up and get about 20 or 30 miles in.
It's 50+ miles to the coast - and Amtrak tends to run late.
So I wouldn't plan on getting out to the coast the first day.
Depending on how much distance you cover you could ride to Bandon
Or even all the way to Brookings and then cut over to Crater Lake and Klamath Falls.
From Klamath Falls it's an overnight trip back to Sac with early a.m. arrival.