The route log begins at the Bergen County line; the mile markers start at the road’s origin in Union City, Hudson Co.
| Mile | Street Name | Feature (South to North) |
| 3.44 | Entering (North Bergen Twp, Hudson Co.) [Edgewater Boro, Bergen Co.] | |
 River Road northbound at the Bergen County line. |
||
| 3.67 | Entering Edgewater Boro | |
| 3.67 | River Rd | Business entrance {signal} |
| 3.84 | River Rd | (Gorge Rd, CR S-25) {signal} |
| 4.07 | River Rd | (Gorge Rd connector {signal}) |
| 5.07 | River Rd | Russell Ave {signal} |
| 5.57 | River Rd | Dempsey Ave {signal} |
| 5.70 | River Rd | (NJ 5 {signal}) |
| 6.87 | River Rd | Unnamed stream {culvert} |
| 7.09 | River Rd | [Henry Hudson Drive, park entrance] |
| 7.19 | Entering Fort Lee Boro | |
| 7.19 | River Rd becomes Main St | |
| 7.27 | CR 505 bears right onto Hudson Terr | |
| 7.27 | Hudson Terr | Main St, (CR 56) |
| 7.46 | Hudson Terr | (Bigler St, CR S-56 / Bridge Plaza South) {signal} |
| 7.55 | Hudson Terr | George Washington Bridge, I-95 / US 1/9/46 {split level} |
| 7.58 | Hudson Terr | Bridge Plaza North {signal} |
| 7.98 | Hudson Terr | Palisades Interstate Parkway spur, NJ S-445 |
| 8.37 | Entering Englewood Cliffs Boro | |
| 9.50 | Hudson Terr | Palisade Ave, [park entrance, old CR 503] |
| 9.50 | CR 505 turns left onto Palisade Ave | |
| 9.62 | Palisade Ave | Sylvan Ave, US 9W {signal} |
| 9.82 | Palisade Ave | Summit St {signal} |
| 9.82 | Entering (Englewood City) [Englewood Cliffs Boro] | |
| 10.13 | Palisade Ave | Flat Rock Brook {culvert} |
| 10.13 | Entering Englewood City | |
| 10.53 | Palisade Ave | Jones Rd {signal} |
 Northbound (westward) at Jones Road. Note the CR 66 sign. CR 66 was completely supplanted by CR 505. | ||
| 10.70 | Palisade Ave | (Dana Pl) {signal} |
| 10.75 | Palisade Ave | [Lydecker St] {signal} |
| 11.04 | Palisade Ave | (Grand Ave) [Engle St], CR 501 northbound {signal} |
| 11.13 | Palisade Ave | Dean St, CR 501 southbound {signal} |
 Southbound (eastward) at Dean Street, looking up the hill toward Englewood Cliffs. |
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| 11.19 | Palisade Ave | Northern Railroad {at-grade crossing} |
| 11.21 | Palisade Ave | Van Brunt St {signal} |
| 11.26 | Palisade Ave | Humphrey St {signal} |
| 11.33 | Palisade Ave | (William St) {signal} |
| 11.48 | Palisade Ave | (Lafayette Ave, CR S-37) [Tenafly Rd] {circle} |
| 11.71 | CR 505 turns right onto Knickerbocker Rd | |
| 11.81 | Knickerbocker Rd | Liberty St, (CR 49) {signal} |
| 12.10 | Knickerbocker Rd | Unnamed stream {culvert} |
| 12.19 | Knickerbocker Rd | Tryon Ave {signal} |
| 12.54 | Knickerbocker Rd | Hudson Ave {signal} |
| 12.69 | Knickerbocker Rd | Ivy Ln, (CR S-68) {signal} |
| 12.68 | Entering Tenafly Boro | |
| 13.54 | Knickerbocker Rd | Clinton Ave {signal} |
| 13.75 | Knickerbocker Rd | River Edge Rd, (CR 70) {signal} |
| 14.24 | Entering Cresskill Boro | |
| 14.71 | Knickerbocker Rd | Madison Ave, (CR 74) {circle} |
| 14.71 | Entering (Dumont Boro) [Cresskill Boro] | |
| 15.16 | Knickerbocker Rd | Grant Ave {signal} |
| 15.53 | Entering (Dumont Boro) [Demarest Boro] | |
| 15.62 | Entering Demarest Boro | |
| 15.86 | Knickerbocker Rd | Hardenburgh Ave, CR 80 {signal} |
| 16.03 | Knickerbocker Rd | Madison Ave {signal} |
| 16.55 | Entering Closter Boro | |
| 16.65 | Knickerbocker Rd | Durie Ave, (CR 41) {signal} |
| 17.07 | Knickerbocker Rd | High St, (CR 502) {signal} |
| 17.24 | Knickerbocker Rd | Cedar Ave {signal} |
| 17.59 | Knickerbocker Rd | [Harrington Ave, CR 102] |
| 17.59 | Next 0.03 mile co-signed with CR 102 | |
| 17.61 | Knickerbocker Rd | Dwarskill Creek / Oradell Reservoir {bridge} |
| 17.61 | Entering Harrington Park Boro | |
| 17.62 | Livingston St | (Closter Rd, CR 102) |
| 18.20 | Entering Norwood Boro | |
| 18.34 | Livingston St | Blanch Ave, CR S-109 {signal} |
| 18.52 | Livingston St | Unnamed stream {culvert} |
| 19.13 | Livingston St | Broadway, CR 106 {signal} |
| 19.48 | Entering Northvale Boro | |
| 19.93 | Livingston St | Paris Ave, CR 108 {signal} |
 Southbound at Paris Avenue. Note overhead sign with pentagon, also Turnpike trailblazer. | ||
| 20.26 | Livingston St | (Henmarken Dr) [Pegasus Ave] {signal} |
| 20.58 | Livingston St | Unnamed stream {culvert} |
| 20.64 | CR 505 ENDS, Northvale Boro | |
  Northbound, then southbound, where 505 becomes NJ 303. | ||
| 0.00 | NY 303 BEGINS, Orangetown Town, Rockland Co. | |