Train to Oceanside, Ride 16 miles to Solana Beach (or not)  & then train to Old Town San Diego. 
Find your lodging & drop off your bags, (pack light - carry a daypack or bag on your bike) then enjoy a 23 mile afternoon ride around Mission Bay before dinner.
Return to Old Town early Sunday morning to meet up and ride 37 miles to downtown San Diego, Ferry across the bay to Coronado. Check out the historic Coronado Inn and then ride the loop around the bay, returning to  Old Town. Fetch your baggage & get back to Old Town Station to catch the train at 3:20 to Oceanside. We will have dinner in Oceanside & catch the train @ 5:36 back toward Irvine.
Saturday Timeline
OPTION 1 - 
8:30 Meet up at the Irvine Train Station to board at at IEOC 857 from Irvine to Oceanside 
(or catch the 857 from MV/LN, SJC or San Clemente…or Tustin, SA or Orange! )
9:41  Arrive in Oceanside - 55 minutes for breakfast before the Coaster 674 
OPTION 1a - Hang out - breakfast in Oceanside waiting until 10:36 to Board Coaster 674 from Oceanside to Old Town Transit Center
OPTION 1b -Ride 12 miles to Encinitas 9:41 to 10:55 = 1 hour 11 minutes to ride Ride 11.9 miles (>10 mph) See details page for ROUTE SLIP to board @ 10:55 the Coaster 674 from Oceanside at Encinitas
     OPTION 1c - Ride 16 miles to  to Solana Beach 9:41 to 11:01 = 1 hour 20 minutes to ride 15.7 miles ( >12 mph)  -  See details page for ROUTE SLIP  to board @ 11:01 the  Coaster 674 from Oceanside  at Solana Beach 
11:31 Coaster 674  arrives in Old Town
OPTION 2 - Drive from home to Old Town Station; (skip the trains) to make the 1pm ride start.
1:00 RIDE MISSION BAY See details page for ROUTE SLIP
5:00 Ride ends at Casa Guadalajara for a cold beer, glass of Sangria or a Margarita… and dinner
5:30 Gather for early dinner on the patio of Casa Guadalajara
Sunday  Timeline
(Spend the night or drive down EARLY Sunday morning & park at Old Town Transit Center) 
 
8:30 RIDE  SAN DIEGO BAY See details page for ROUTE SLIP
9:00 Catch ferry to Coronado at mile 3.9 - 
Grab lunch, and explore Old Town, and fetch your bag before meeting the train north @ 3:20:
3:27 Coaster 679 from Old Town to Oceanside 
4:22 Arrive in Oceanside - 72 minutes for an early dinner while waiting for the Metrolink OC 667
5:36 OC 667 from Oceanside to Irvine (or where you started)
6:34 Stop in Irvine (after stops in San Clemente, SJC, MV/LN and later stops at Tustin, SA & Orange)
