Lots of fun things happening on the Summer Solstice, Saturday June 19th. From noon until midnight there is the Downtown Summer Solstice Festival with bike parking from noon until 5pm on F Street just north of 7th Avenue (brought to you by the good folks at the BCA). This PDF map of the event includes the bike parking location.

Then there is the Second Annual Solstice Midnight Sun Ride, registration is at 10:30pm and the ride starts at sunset, 11:42pm. The ride goes from the bunker (near the chalet) in Kincaid Park, down the coastal trail to downtown.