These are most of the distances in KM for the Trans-Pecos region. It is available for download in several formats so that you can print it out.
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From the Kettle Restaurant in Del Rio
kilometers going up Hwy.277                       kilometers going west on Hwy. 90

       TO         		  from
Kettle     		 from
prior     		                  TO             from
Kettle     		 from
prior     
Hwy. 277 N. 4.83 4.83 163(juno Rd.) 48.6 48.6
Park Rd.R2 25.91 21.08 Pecos River 66.79 18.19
377 turnoff 40.56 14.65 Shumla 76.6 9.81
Carruthers Creek    44.26 3.7 top of big hill east    87.87 11.27
radio tower 47.48 3.22 Langtry EXXON 93.5 5.63
Red Bluff 51.02 3.52 Ozman Canyon 96.4 2.9
Cheney Creek 53.27 2.25 top of big hill W. 99.9 3.54
rest area S. 54.56 1.29 start of long cuts 106.42 6.43
Loma Alta 63.41 8.85 rest area 111.41 4.99
Dolan Road 69.36 5.95 Antonio Creek 114.32 2.9
Mail Trail 71.29 1.93 Pumpville Rd. 115.77 1.45
Buffalo Creek 74.67 3.38 Lozier Canyon 120,6 4.83
Edwards County 86.58 11.91 Palma Draw 125.27 4.67
Hwy. 189 (to Juno)   117.48 30.9      
Sonora (I-10) 142.75 30.9      

      kilometers going up Hwy. 163 (Juno Rd.)         kilometers from Palma Draw W. on Hwy. 90

       TO         		  from
Hwy.90     		 from
prior     		                  TO             from
Palma     		 from
prior     
S-curve 28.16 28.16 Dryden (349) 31.38 31.38
Baker's X-ing   33.47 5.31 Sanderson (285)   65.66 32.28
Juno (189) 66.79 33.2 Marathon (385) 150.15 84.49
      Alpine (118 S) 199.24 49.09

kilometers from Sanderson N. on 285             kilometers N. from Alpine on 118     

       TO         		  from
Hwy.90     		 from
prior     		                  TO             from
Hwy. 90     		 from
prior     
top of big hill   13.52 13.52 girl ScoutRd.   15.93 15.93
Pecos Cty. line   17.06 3.54 Musquiz Marker  28.16 12.23
SR 2400 32.66 6.6 CDRI gate 31.38 3.22
IH-10 107.18 83.52 FortDavis (17) 40.3 9.01

    kilometers S. from Alpine                          kilometers N. from Ft. Davis on Hwy.17

       TO         		  from
Hwy.90     		 from
prior     		                  TO             from
Hwy. 118     		 from
prior     
Longhorn 106.37 106.27 start Limpia 11.91 11.91
Wildhorse 117.48 11.11 end Limpia 16.41 4.50
SR 170 (river Rd.)   126.33 8.85 BoyScout Rd.   38.62 22.21
Lajitas 153.37 26.97; Balmorhea (I-10)  61.0 22.38
teepees 1173.32 19.95 Boy Scout Gate 18.0  


Km for Black Gap from Marathon            kilometers from Ft. Davis, 118 N.    

       TO         		  from
Hwy.90     		 from
prior     		                  TO             from
Hwy. 17     		 from
prior     
Black Gap Rd.   62.49 62.49 Prude Ranch 7.08 7.08
Stillwell's 72.42 9.93 Pre obs. cuts   18.35 11.27
Ranger Sta. 89.32 16.9 Observatory Rd.  22.05 3.7
bottom long hill
 105.41 16.09 SR 166 45.22 13.17
La Linda bridge  107.34 1.93 IH-10 (Kent) 82.4 37.18

Some other approximate distances for the southwestern area.
East from theNew Mexico line to: El Paso-32; Van Horn - 225; Alpine - 386; Kent-285; junction I-20/I-10- 301; Fort Stockton-414. West from the NM line to: Las Cruces - 39; Tucson - 480; Phoenix - 673. From Del Rio to: El paso-679; San Antonio airport - 269; Alpine -325; Abilene - 394;
John O. Hollister, June, 1998