How do I get around San Diego?

The honest answer is that San Diego was built for cars, and visitors who skip renting one will spend half their trip in the back of an Uber. The city stretches 30 miles north to south along the coast, and its major draws sit in clusters separated by freeway interchanges and canyon-carved neighborhoods with no connecting sidewalk. Downtown's Gaslamp Quarter to La Jolla is 13 miles. Balboa Park to Pacific Beach is 9. The MTS Trolley covers some of that distance on its Blue, Orange, and Green lines, but the routes follow old freight corridors through Mission Valley rather than connecting the places visitors want to be. If you're staying downtown and planning the Zoo plus a beach day, you'll likely need ridehail for at least one leg.

That said, the Trolley earns its keep on two corridors. The Blue Line runs from the Santa Fe Depot downtown to San Ysidro at the Mexican border, a 40-minute ride for $2.50 that drops you within walking distance of the Tijuana crossing. The Green Line reaches SDSU and UC San Diego in University City. Buy a PRONTO card at any station kiosk and load it with what you need. The old Compass card is gone. The MTS bus route 7 is the one bus line worth knowing. It runs from downtown through the Hillcrest neighborhood and into the west side of Balboa Park. The Zoo and the Museum of Art sit about a 10-minute walk apart along El Prado's tile-paved corridor, the sound of a fountain pulling you toward the central plaza.

Uber and Lyft both run here, and fares tend to be reasonable by California standards. Expect $8-12 from the Gaslamp to Pacific Beach, $15-20 to La Jolla. San Diego International Airport sits 3 miles from downtown, close enough that you can catch the smell of jet fuel walking along Harbor Drive. A ridehail to your hotel runs $10-15 and takes 8 minutes without traffic. The MTS Route 992 bus connects Terminals 1 and 2 to the Old Town Transit Center, where you transfer to the Trolley. It works, but it turns an 8-minute drive into a 35-minute trip with a transfer. If your flight lands after 11 PM, ridehail is your only realistic option since the 992 stops running around midnight.

Walking works in four zones. The Gaslamp Quarter's 16 blocks between 4th and 6th Avenues have wide sidewalks and the salt-air breeze off San Diego Bay pulling south toward the convention center. Little Italy along India Street gives you maybe 12 walkable blocks of good espresso and weekend farmers' market stalls. The Pacific Beach boardwalk runs 3.2 miles from Crystal Pier south to Mission Beach, flat and sandy and loud with skateboarders at every turn. Balboa Park's interior paths connect 17 museums across 1,200 acres, though the uphill return from the Spanish Village Art Center to the parking lot reminds you this is a canyon city. Outside those pockets, sidewalks disappear and blocks stretch a quarter mile. The midday sun in August, even at a mild 77°F, throws enough white glare off the pavement that you'll want sunglasses and water for anything over a 10-minute walk.

The single biggest transit mistake is assuming the Coaster commuter rail replaces a rental car for North County. The Coaster runs from the Santa Fe Depot to Oceanside with stops in Solana Beach, Encinitas, and Carlsbad along 60 miles of coast. The bluff-top views north of Del Mar are worth the ride on their own. But trains come every 60-90 minutes on weekdays, less on weekends, and the stations sit a mile or more from the actual beaches and restaurants. Rent a car for North County. For short downtown hops, Lime and Bird electric scooters cost $1 to unlock plus $0.39 per minute and sit on every other sidewalk in the Gaslamp and Pacific Beach. Mind you, San Diego police do ticket scooter riders on sidewalks, so stick to the bike lanes along 5th Avenue and the boardwalk.