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Black-Southdown

📍
898, Black Mountain Road, Hillsborough, San Mateo County, California, 94010, United States
Cat. 4Flag this climb

Estimated Climb Time

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Climb Profile

Altitude builds left to right while colour shows gradient severity for each part of Black-Southdown.

80 m115 m155 m190 m17.4% from 0 m to 5 m11.5% from 5 m to 10 m10.2% from 10 m to 16 m0.0% from 16 m to 33 m0.0% from 33 m to 40 m0.0% from 40 m to 53 m0.0% from 53 m to 60 m6.0% from 60 m to 67 m9.5% from 67 m to 73 m7.1% from 73 m to 78 m10.9% from 78 m to 84 m11.5% from 84 m to 89 m7.5% from 89 m to 94 m11.8% from 94 m to 100 m10.9% from 100 m to 105 m11.3% from 105 m to 110 m7.8% from 110 m to 115 m7.7% from 115 m to 121 m8.0% from 121 m to 126 m8.7% from 126 m to 130 m9.1% from 130 m to 135 m9.1% from 135 m to 139 m9.1% from 139 m to 143 m14.0% from 143 m to 148 m9.5% from 148 m to 152 m10.0% from 152 m to 156 m14.3% from 156 m to 160 m9.3% from 160 m to 164 m9.8% from 164 m to 169 m14.6% from 169 m to 173 m10.0% from 173 m to 177 m15.4% from 177 m to 181 m10.3% from 181 m to 184 m15.0% from 184 m to 188 m10.3% from 188 m to 192 m9.5% from 192 m to 197 m14.3% from 197 m to 201 m8.9% from 201 m to 205 m8.9% from 205 m to 210 m8.9% from 210 m to 214 m0.0% from 214 m to 224 m0.0% from 224 m to 229 m12.0% from 229 m to 234 m7.7% from 234 m to 239 m8.0% from 239 m to 244 m12.2% from 244 m to 249 m8.2% from 249 m to 254 m4.0% from 254 m to 264 m7.8% from 264 m to 269 m7.8% from 269 m to 274 m7.5% from 274 m to 279 m7.4% from 279 m to 285 m3.6% from 285 m to 301 m7.1% from 301 m to 307 m7.1% from 307 m to 313 m6.0% from 313 m to 319 m9.5% from 319 m to 326 m0.0% from 326 m to 346 m0.0% from 346 m to 372 m0.0% from 372 m to 377 m6.9% from 377 m to 383 m6.7% from 383 m to 389 m7.0% from 389 m to 395 m7.0% from 395 m to 401 m10.2% from 401 m to 407 m0.0% from 407 m to 416 m10.3% from 416 m to 420 m9.5% from 420 m to 424 m9.1% from 424 m to 429 m8.3% from 429 m to 434 m11.3% from 434 m to 439 m6.7% from 439 m to 445 m8.6% from 445 m to 452 m5.9% from 452 m to 459 m9.1% from 459 m to 465 m0.0% from 465 m to 484 m6.0% from 484 m to 491 m6.3% from 491 m to 497 m6.2% from 497 m to 504 m8.8% from 504 m to 510 m6.1% from 510 m to 517 m2.0% from 517 m to 537 m10.3% from 537 m to 543 m7.3% from 543 m to 549 m11.5% from 549 m to 554 m7.5% from 554 m to 559 m2.7% from 559 m to 574 m12.0% from 574 m to 579 m6.8% from 579 m to 585 m6.2% from 585 m to 591 m6.5% from 591 m to 597 m0.0% from 597 m to 628 m0.0% from 628 m to 636 m0.0% from 636 m to 653 m-2.0% from 653 m to 683 m-3.8% from 683 m to 694 m-3.8% from 694 m to 704 m-8.1% from 704 m to 714 m-6.7% from 714 m to 723 m-9.5% from 723 m to 731 m-9.2% from 731 m to 740 m-9.1% from 740 m to 749 m-8.4% from 749 m to 758 m-8.5% from 758 m to 768 m-10.5% from 768 m to 777 m0.0% from 777 m to 786 m0.0% from 786 m to 794 m0.0% from 794 m to 807 m10.5% from 807 m to 813 m11.1% from 813 m to 818 m17.0% from 818 m to 823 m21.1% from 823 m to 827 m24.2% from 827 m to 830 m29.6% from 830 m to 833 m25.0% from 833 m to 836 m12.5% from 836 m to 839 m11.8% from 839 m to 843 m11.1% from 843 m to 846 m12.9% from 846 m to 849 m18.2% from 849 m to 853 m12.9% from 853 m to 856 m18.8% from 856 m to 859 m15.4% from 859 m to 861 m20.7% from 861 m to 864 m15.4% from 864 m to 867 m23.1% from 867 m to 870 m13.3% from 870 m to 873 m12.5% from 873 m to 876 m17.1% from 876 m to 879 m12.5% from 879 m to 882 m17.6% from 882 m to 886 m13.3% from 886 m to 889 m17.6% from 889 m to 892 m12.5% from 892 m to 895 m11.4% from 895 m to 899 m16.2% from 899 m to 903 m10.3% from 903 m to 907 m11.8% from 907 m to 910 m17.6% from 910 m to 913 m12.5% from 913 m to 917 m11.1% from 917 m to 920 m13.3% from 920 m to 923 m13.3% from 923 m to 926 m10.0% from 926 m to 930 m9.8% from 930 m to 934 m6.1% from 934 m to 944 m8.2% from 944 m to 949 m14.3% from 949 m to 953 m10.3% from 953 m to 957 m12.1% from 957 m to 960 m11.1% from 960 m to 964 m11.4% from 964 m to 967 m11.1% from 967 m to 971 m14.8% from 971 m to 974 m13.3% from 974 m to 977 m24.0% from 977 m to 979 m13.3% from 979 m to 982 m12.9% from 982 m to 985 m15.4% from 985 m to 988 m14.3% from 988 m to 991 m18.2% from 991 m to 994 m17.4% from 994 m to 996 m12.5% from 996 m to 1000 m25.0% from 1000 m to 1.0 km22.2% from 1.0 km to 1.0 km37.5% from 1.0 km to 1.0 km28.6% from 1.0 km to 1.0 km15.8% from 1.0 km to 1.0 km14.3% from 1.0 km to 1.0 km21.6% from 1.0 km to 1.0 km18.8% from 1.0 km to 1.0 km19.4% from 1.0 km to 1.0 km22.2% from 1.0 km to 1.0 km10.2% from 1.0 km to 1.0 km12.9% from 1.0 km to 1.0 km17.6% from 1.0 km to 1.0 km10.5% from 1.0 km to 1.0 km17.1% from 1.0 km to 1.0 km12.9% from 1.0 km to 1.1 km12.5% from 1.1 km to 1.1 km22.2% from 1.1 km to 1.1 km13.3% from 1.1 km to 1.1 km11.8% from 1.1 km to 1.1 km4.9% from 1.1 km to 1.1 km10.5% from 1.1 km to 1.1 km15.4% from 1.1 km to 1.1 km10.5% from 1.1 km to 1.1 km11.4% from 1.1 km to 1.1 km5.0% from 1.1 km to 1.1 km13.8% from 1.1 km to 1.1 km20.0% from 1.1 km to 1.1 km12.1% from 1.1 km to 1.1 km14.6% from 1.1 km to 1.1 km5.4% from 1.1 km to 1.1 km14.3% from 1.1 km to 1.1 km10.3% from 1.1 km to 1.1 km10.0% from 1.1 km to 1.1 km14.3% from 1.1 km to 1.1 km8.9% from 1.1 km to 1.1 km14.6% from 1.1 km to 1.1 km9.8% from 1.1 km to 1.1 km13.6% from 1.1 km to 1.2 km0.0% from 1.2 km to 1.2 km4.2% from 1.2 km to 1.2 km8.7% from 1.2 km to 1.2 km9.3% from 1.2 km to 1.2 km9.1% from 1.2 km to 1.2 km9.3% from 1.2 km to 1.2 km5.6% from 1.2 km to 1.2 km11.1% from 1.2 km to 1.2 km12.1% from 1.2 km to 1.2 km14.6% from 1.2 km to 1.2 km10.3% from 1.2 km to 1.2 km18.7% from 1.2 km to 1.2 km10.8% from 1.2 km to 1.2 km16.2% from 1.2 km to 1.2 km11.4% from 1.2 km to 1.2 km15.8% from 1.2 km to 1.2 km11.4% from 1.2 km to 1.2 km20.7% from 1.2 km to 1.2 km16.7% from 1.2 km to 1.2 km21.1% from 1.2 km to 1.2 km33.3% from 1.2 km to 1.2 km16.7% from 1.2 km to 1.2 km20.0% from 1.2 km to 1.2 km18.8% from 1.2 km to 1.2 km19.4% from 1.2 km to 1.2 km21.4% from 1.2 km to 1.3 km18.2% from 1.3 km to 1.3 km21.4% from 1.3 km to 1.3 km18.7% from 1.3 km to 1.3 km13.3% from 1.3 km to 1.3 km18.2% from 1.3 km to 1.3 km20.0% from 1.3 km to 1.3 km17.6% from 1.3 km to 1.3 km18.2% from 1.3 km to 1.3 km16.7% from 1.3 km to 1.3 km18.2% from 1.3 km to 1.3 km10.7% from 1.3 km to 1.3 km10.3% from 1.3 km to 1.3 km12.0% from 1.3 km to 1.3 km10.7% from 1.3 km to 1.3 km6.2% from 1.3 km to 1.3 km9.7% from 1.3 km to 1.3 km12.0% from 1.3 km to 1.3 km11.8% from 1.3 km to 1.3 km10.9% from 1.3 km to 1.3 km7.0% from 1.3 km to 1.3 km8.3% from 1.3 km to 1.3 km11.8% from 1.3 km to 1.3 km8.0% from 1.3 km to 1.4 km8.2% from 1.4 km to 1.4 km10.9% from 1.4 km to 1.4 km10.3% from 1.4 km to 1.4 km8.8% from 1.4 km to 1.4 km5.6% from 1.4 km to 1.4 km0.0% from 1.4 km to 1.4 km2.7% from 1.4 km to 1.4 km8.3% from 1.4 km to 1.4 km5.4% from 1.4 km to 1.4 km8%5%0%10%13%10%0 m250 m500 m750 m1 km1.3 km
Gradient key0-3%3-6%6-9%9-12%12-15%15%+

Climb Stats

Combined metric and imperial stats for quick route planning.

Climb categoryCategory 4
Distance1.42 km / 0.88 miles
Elevation gain105.4 m / 346 ft
Average gradient7.4%
Maximum gradient24.6%
Elevation high188.8 m / 619 ft
Elevation low83.4 m / 274 ft
Climb difficulty score10,542.43

Similar Climbs Nearby

If you like the shape of this climb, these nearby options have a similar distance, gradient, and elevation profile.

Tip: rotate your phone to landscape and swipe the table sideways to reveal the full set of climb details.

ClimbLengthGradientAscent
Bowhill to Culebra Rd Climbs
Hillsborough, San Mateo County
1.35 km7.4%114 m
Stage simulator
Hillsborough, San Mateo County
1.4 km6.8%95 m
Tournament Tuffy
Hillsborough, San Mateo County
1.55 km6.9%109 m
Robin to Pullman
Hillsborough, San Mateo County
1.29 km7.1%92 m
Ralston Climb - Chateau to Provident
Hillsborough, San Mateo County
1.21 km7.9%95 m

Climb Rank

How does this climb compare against every other climb in the world?

🗺

This climb ranks 534,660th out of 2,710,652 worldwide cycling climbs.

🧮

Ranked as the 41,866th most difficult cycling climb of all 337,250 climbs in United States.

📉

Places 13,858th out of 66,571 cycling climbs in California.

⚖

Ranks 672nd out of 2,437 cycling climbs in San Mateo County.

⚖

Ranking 44th out of 155 cycling climbs in Hillsborough.

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