San Dimas is a town that still has recognizable errand routes, which helps. The old core runs along Bonita Avenue, where the storefronts wear the western facades the city adopted decades ago and the 1887 Santa Fe depot now holds a railroad museum rather than a ticket window. Western Days each autumn is genuinely the town's biggest weekend, complete with a rodeo, and horses are not decorative here — San Dimas keeps equestrian zoning and a trail network that threads out of the neighborhoods toward San Dimas Canyon and Marshall Canyon, so a delivery driver on a residential street will pass horse property on the way. North of the grid, Frank G. Bonelli Regional Park wraps Puddingstone Reservoir with the water park on its slope, and that whole corner is where the town spends its weekends. None of it is scenery for this page: it is the reason the residential blocks here read like a small town rather than an interchange suburb, and why a bouquet left at a front door is an unremarkable thing.
The everyday routes divide the same way the city does. Above Bonita Avenue the streets climb into Via Verde around the country club, the Marchant blocks, and the frontages running toward the canyon and the Puente Hills flank — houses set well back, hedged, some clusters gated at the street, where a bouquet on the step is entirely safe for the afternoon provided the driver had a code to get in. Below, the grid running from Gladstone Street down through Lone Hill Avenue and out to the Covina Boulevard tracts is straightforward to drive, but it holds most of the apartment courts and condominium clusters, and those need a unit number on the label. The ring also carries 91750 in La Verne, 91741 in Glendora and 91724 across the Covina and Charter Oak edge, which between them hold a lot of the grandparents, in-laws and old friends that San Dimas just-because orders are actually addressed to.
The destinations worth knowing about are the ones people forget. School offices take flowers all year and a thank-you to a teacher at a Bonita Unified campus lands better in October than in June, when everybody sends them at once. The Sheriff's station on the civic side of town and the local firehouses accept deliveries to a front desk, and an arrangement addressed to a shift rather than a person is a normal thing to send. Senior residences and continuing-care communities in San Dimas, La Verne and Glendora are probably the highest-value no-occasion destination in the whole ring: the deliveries go to a front desk with a resident's full name and apartment number, the arrangement sits on a small table so compact designs travel better, and unlike a birthday there is no competition for attention that week. Then there is the plain version — a friend's kitchen counter, a front porch, a desk along the Arrow Highway and Gladstone Street commercial belt where somebody has been carrying too much.