If you're looking for a meeting place or a good stop around ½ or halfway between Rancho Cordova and San Francisco, you can try Fairfield, CA, which is almost an hour southwest of Rancho Cordova, or almost an hour northeast of San Francisco.
About ¼ or a fourth of the way, you can stop at Davis, CA. This is about half an hour west of Rancho Cordova.
About ⅓ or a third of the way, you can stop at Dixon, CA. This is about half an hour west of Rancho Cordova.
About ⅔ or two thirds of the way, you can stop at Vallejo, CA. This is about 1 hour southwest of Rancho Cordova, or about half an hour north of San Francisco.
About ¾ or three fourths of the way, you can stop at Hercules, CA. This is a little over 1 hour southwest of Rancho Cordova, or about half an hour northeast of San Francisco.
If you drive straight through without stopping at all, the total distance is 98 miles. The distances shown above don't include local roads to get into each town, so if you're planning a long road trip, make sure you factor in traffic and road conditions, rest stop breaks, and interesting detours along the way. If you're in a rush, you can do the trip with zero stops, and your total travel time would be around 1 hour, 38 minutes.