| Mile | Street Name | Feature (South to North) |
| 0.00 | CR 503 BEGINS, East Rutherford Boro | |
| 0.00 | Washington Ave | NJ 120 {merge} |
| 0.23 | Washington Ave | Paterson Plank Rd, NJ 120 northbound {underpass} |
| 0.23 | Entering Carlstadt Boro | |
 Southbound approaching Paterson Plank Road. NJ 120 northbound uses the overpass. | ||
| 0.73 | Washington Ave | Veterans Blvd {signal} |
| 1.25 | Washington Ave | Commerce Rd {signal} |
| 1.59 | Washington Ave | (Moonachie Rd, CR 36) [Empire Blvd] {signal} |
| 1.59 | Entering Moonachie Boro | |
| 2.15 | Moonachie Rd | Joseph St {signal} |
| 2.44 | Entering Little Ferry Boro | |
| 2.44 | Liberty St | Losen Slote {bridge} |
 Southbound approaching Losen Slote, the Moonachie-Little Ferry line. | ||
| 2.74 | Liberty St | School entrance {signal} |
| 3.00 | Liberty St | (Redneck Ave, CR S-43) |
| 3.12 | Liberty St | Main St, CR 40 {signal} |
| 3.26 | Liberty St | Sylvan Ave, US 46 {signal} |
| 3.58 | Entering South Hackensack Twp | |
| 3.58 | Liberty St becomes Moonachie Rd | |
| 3.72 | Entering Hackensack City | |
| 3.87 | Moonachie Rd | Hudson St, CR 124 |
| 3.97 | Moonachie Rd | River St, [CR 49] |
| 3.97 | CR 503 turns left onto River St | |
| 3.97 | Next 3.59 miles co-signed with CR 49 | |
| 4.24 | River St | Bergen-Passaic Expwy, I-80 {underpass} |
| 4.33 | River St | Kennedy St {signal} |
| 4.78 | River St | East Broadway {signal} |
| 4.91 | River St | Kansas St, (CR C-4) {signal} |
| 5.12 | River St | Court St, CR 56 eastbound {signal} |
| 5.16 | River St | Bridge St {signal} |
| 5.24 | River St | Atlantic St {signal} |
| 5.39 | River St | (Mercer St) {signal} |
| 5.40 | River St | Susquehanna Railroad {underpass} |
| 5.46 | River St | [Midtown Bridge Approach, CR 56 eastbound] |
| 5.55 | River St | Salem St, [CR 56 westbound] {signal} |
| 5.64 | River St | Camden St {signal} |
| 5.81 | River St | (Passaic St) {signal}; CR 62 begins 0.08 mile west |
| 6.03 | River St | Anderson St, CR 60 {signal} |
| 6.31 | River St | Hackensack Ave | University Blvd {signal} |
| 6.50 | Hackensack Ave | Temple Ave {signal} |
| 7.04 | Hackensack Ave | NJ 4 {overpass} |
| 7.15 | Hackensack Ave | NJ 4 ramp {signal} |
| 7.18 | Hackensack Ave | NJ 4 ramp {signal} |
| 7.31 | Hackensack Ave | [Mall entrance] {signal} |
| 7.40 | Hackensack Ave | Coles Brook {bridge} |
| 7.40 | Entering River Edge Boro | |
| 7.45 | Hackensack Ave | Grand Ave, CR S-49 |
| 7.56 | CR 503 turns left onto Main St | |
| 7.56 | Main St | Hackensack Ave, CR 49 {signal} |
| 7.61 | Main St | Erie Railroad {at-grade crossing} |
| 7.71 | Main St | Kinderkamack Rd, (CR 51) {signal} |
| 7.71 | CR 503 turns right onto Kinderkamack Rd | |
| 7.71 | Kinderkamack Rd | Main St, CR 68 {signal} |
| 8.59 | Kinderkamack Rd | (Voorhees Ave) {signal} |
| 9.10 | Kinderkamack Rd | (Continental Ave) [Jordan Rd] {signal} |
| 9.34 | Kinderkamack Rd | (Lincoln Ave) [River Edge Rd, CR 70] {signal} |
| 9.61 | Kinderkamack Rd | (Midland Ave, CR 74) {signal} |
| 9.72 | Entering Oradell Boro | |
| 10.10 | Kinderkamack Rd | [New Milford Ave] {signal} |
| 10.41 | Kinderkamack Rd | Ridgewood Ave, (CR S-80) {signal} |
| 10.70 | Kinderkamack Rd | Oradell Ave, (CR 80) {signal} |
| 11.12 | Kinderkamack Rd | (Soldier Hill Rd, CR 115) {signal} |
| 11.59 | Kinderkamack Rd | [Business entrance] {signal} |
| 11.82 | Entering Emerson Boro | |
| 12.15 | Kinderkamack Rd | Erie Railroad {at-grade crossing} |
| 12.20 | Kinderkamack Rd | Linwood Ave {signal} |
| 12.74 | Entering Westwood Boro | |
| 12.95 | Kinderkamack Rd | Musquapsink Creek {culvert} |
| 12.97 | Kinderkamack Rd | Old Hook Rd, CR 502 {signal} |
| 13.53 | Kinderkamack Rd | (Westwood Ave, CR S-114) [Harrington Ave, CR 110] {signal} |
| 14.03 | Kinderkamack Rd | Pascack Brook {culvert} |
| 14.03 | Entering Hillsdale Boro | |
| 14.18 | Kinderkamack Rd | Washington Ave, CR S-51 {signal} |
| 14.27 | Kinderkamack Rd | Hillsdale Ave, CR 112 {signal} |
| 14.59 | Kinderkamack Rd | Piermont Ave, CR 114 {signal} |
| 15.24 | Entering Woodcliff Lake Boro | |
| 15.46 | Kinderkamack Rd | Prospect Ave, CR 90 {signal} |
| 15.75 | Entering [Woodcliff Lake Boro](Park Ridge Boro) | |
| 16.35 | Kinderkamack Rd | Park Ave, CR 92 {signal} |
| 16.66 | Kinderkamack Rd | Mall entrance {signal} |
| 16.75 | Entering Montvale Boro | |
| 16.98 | Kinderkamack Rd | Grand Ave, CR 94 {signal} |
 Kinderkamack Road southbound at Grand Avenue. The tracks complicate matters. Notice the unusual CR 503 square shield on the sign ahead. | ||
| 17.07 | Kinderkamack Rd | Erie Railroad {at-grade crossing} |
| 17.28 | Kinderkamack Rd | Muddy Brook {culvert} |
| 17.95 | CR 503 ENDS, Montvale Boro | |
  Northbound and southbound views at the state line, where CR 503 becomes NY 304. | ||
| 0.00 | NY 304 BEGINS, Pearl River Village, Rockland Co. | |