BikeClimbs.com

Flagstaff 20th Street to apex

📍
700, 20th Street, Central Boulder - University Hill, Boulder, Boulder County, Colorado, 80302, United States
Cat. 1Flag 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 Flagstaff 20th Street to apex.

1655 m1900 m2150 m2395 m3.1% from 0 m to 10 m4.3% from 10 m to 37 m4.8% from 37 m to 56 m5.0% from 56 m to 76 m5.6% from 76 m to 107 m6.6% from 107 m to 143 m6.9% from 143 m to 188 m7.0% from 188 m to 224 m5.9% from 224 m to 263 m5.9% from 263 m to 299 m6.6% from 299 m to 334 m7.2% from 334 m to 377 m7.6% from 377 m to 404 m7.1% from 404 m to 439 m5.9% from 439 m to 473 m6.8% from 473 m to 499 m7.1% from 499 m to 534 m7.3% from 534 m to 581 m7.1% from 581 m to 612 m2.5% from 612 m to 648 m7.7% from 648 m to 687 m7.8% from 687 m to 725 m7.4% from 725 m to 771 m7.0% from 771 m to 807 m4.6% from 807 m to 856 m4.7% from 856 m to 892 m4.7% from 892 m to 926 m3.8% from 926 m to 955 m2.6% from 955 m to 993 m2.4% from 993 m to 1.0 km2.3% from 1.0 km to 1.1 km3.8% from 1.1 km to 1.1 km3.1% from 1.1 km to 1.2 km3.7% from 1.2 km to 1.2 km3.0% from 1.2 km to 1.3 km2.2% from 1.3 km to 1.3 km2.5% from 1.3 km to 1.3 km2.6% from 1.3 km to 1.4 km2.9% from 1.4 km to 1.4 km3.3% from 1.4 km to 1.5 km3.3% from 1.5 km to 1.5 km2.7% from 1.5 km to 1.6 km0.3% from 1.6 km to 1.6 km1.0% from 1.6 km to 1.6 km2.2% from 1.6 km to 1.7 km2.5% from 1.7 km to 1.7 km5.1% from 1.7 km to 1.7 km6.2% from 1.7 km to 1.8 km5.3% from 1.8 km to 1.8 km2.7% from 1.8 km to 1.9 km2.9% from 1.9 km to 1.9 km-1.6% from 1.9 km to 1.9 km2.1% from 1.9 km to 1.9 km2.8% from 1.9 km to 2.0 km8.7% from 2.0 km to 2.0 km10.5% from 2.0 km to 2.0 km3.2% from 2.0 km to 2.0 km1.5% from 2.0 km to 2.1 km3.7% from 2.1 km to 2.1 km4.7% from 2.1 km to 2.1 km4.7% from 2.1 km to 2.2 km8.1% from 2.2 km to 2.2 km14.5% from 2.2 km to 2.2 km11.6% from 2.2 km to 2.2 km6.0% from 2.2 km to 2.2 km4.0% from 2.2 km to 2.3 km5.6% from 2.3 km to 2.3 km16.3% from 2.3 km to 2.3 km16.5% from 2.3 km to 2.3 km9.6% from 2.3 km to 2.4 km18.7% from 2.4 km to 2.4 km22.3% from 2.4 km to 2.4 km17.6% from 2.4 km to 2.4 km13.4% from 2.4 km to 2.5 km-0.5% from 2.5 km to 2.5 km-1.7% from 2.5 km to 2.5 km1.6% from 2.5 km to 2.5 km5.3% from 2.5 km to 2.5 km4.6% from 2.5 km to 2.6 km-4.0% from 2.6 km to 2.6 km1.0% from 2.6 km to 2.6 km4.9% from 2.6 km to 2.6 km11.2% from 2.6 km to 2.7 km10.7% from 2.7 km to 2.7 km30.6% from 2.7 km to 2.7 km19.6% from 2.7 km to 2.7 km4.7% from 2.7 km to 2.7 km9.6% from 2.7 km to 2.8 km11.6% from 2.8 km to 2.8 km9.7% from 2.8 km to 2.8 km19.2% from 2.8 km to 2.8 km12.1% from 2.8 km to 2.9 km0.9% from 2.9 km to 2.9 km14.9% from 2.9 km to 2.9 km11.7% from 2.9 km to 2.9 km2.3% from 2.9 km to 3.0 km0.0% from 3.0 km to 3.0 km3.9% from 3.0 km to 3.0 km8.9% from 3.0 km to 3.0 km11.8% from 3.0 km to 3.0 km10.8% from 3.0 km to 3.1 km11.9% from 3.1 km to 3.1 km17.1% from 3.1 km to 3.1 km10.2% from 3.1 km to 3.1 km4.9% from 3.1 km to 3.2 km1.5% from 3.2 km to 3.2 km0.6% from 3.2 km to 3.2 km-1.9% from 3.2 km to 3.2 km5.6% from 3.2 km to 3.3 km13.8% from 3.3 km to 3.3 km19.4% from 3.3 km to 3.3 km-1.1% from 3.3 km to 3.3 km-6.8% from 3.3 km to 3.4 km-2.5% from 3.4 km to 3.4 km1.2% from 3.4 km to 3.4 km-3.4% from 3.4 km to 3.4 km4.0% from 3.4 km to 3.4 km40.9% from 3.4 km to 3.5 km1.8% from 3.5 km to 3.5 km-1.0% from 3.5 km to 3.5 km7.0% from 3.5 km to 3.5 km9.9% from 3.5 km to 3.6 km5.8% from 3.6 km to 3.6 km3.7% from 3.6 km to 3.6 km14.2% from 3.6 km to 3.6 km4.2% from 3.6 km to 3.7 km2.1% from 3.7 km to 3.7 km8.8% from 3.7 km to 3.7 km15.8% from 3.7 km to 3.7 km9.5% from 3.7 km to 3.8 km8.0% from 3.8 km to 3.8 km33.3% from 3.8 km to 3.8 km-7.1% from 3.8 km to 3.8 km-10.0% from 3.8 km to 3.8 km-2.4% from 3.8 km to 3.9 km-4.6% from 3.9 km to 3.9 km-2.2% from 3.9 km to 3.9 km5.9% from 3.9 km to 3.9 km11.3% from 3.9 km to 4.0 km16.5% from 4.0 km to 4.0 km12.6% from 4.0 km to 4.0 km15.5% from 4.0 km to 4.0 km12.8% from 4.0 km to 4.0 km-1.8% from 4.0 km to 4.1 km-0.5% from 4.1 km to 4.1 km-3.7% from 4.1 km to 4.1 km1.6% from 4.1 km to 4.1 km-1.1% from 4.1 km to 4.1 km-13.2% from 4.1 km to 4.2 km-6.2% from 4.2 km to 4.2 km9.4% from 4.2 km to 4.2 km5.1% from 4.2 km to 4.2 km12.2% from 4.2 km to 4.2 km9.8% from 4.2 km to 4.3 km10.0% from 4.3 km to 4.3 km13.5% from 4.3 km to 4.3 km3.6% from 4.3 km to 4.3 km3.0% from 4.3 km to 4.4 km-2.2% from 4.4 km to 4.4 km-8.2% from 4.4 km to 4.4 km-5.9% from 4.4 km to 4.4 km18.6% from 4.4 km to 4.4 km33.1% from 4.4 km to 4.5 km14.7% from 4.5 km to 4.5 km1.3% from 4.5 km to 4.5 km0.5% from 4.5 km to 4.5 km-2.2% from 4.5 km to 4.5 km3.7% from 4.5 km to 4.5 km9.8% from 4.5 km to 4.6 km7.7% from 4.6 km to 4.6 km5.5% from 4.6 km to 4.7 km-8.2% from 4.7 km to 4.7 km20.4% from 4.7 km to 4.7 km12.5% from 4.7 km to 4.7 km3.1% from 4.7 km to 4.8 km6.7% from 4.8 km to 4.8 km-4.5% from 4.8 km to 4.8 km2.7% from 4.8 km to 4.8 km8.2% from 4.8 km to 4.9 km5.1% from 4.9 km to 4.9 km6.2% from 4.9 km to 4.9 km19.1% from 4.9 km to 4.9 km14.3% from 4.9 km to 5.0 km24.8% from 5.0 km to 5.0 km0.0% from 5.0 km to 5.0 km-11.7% from 5.0 km to 5.0 km-6.0% from 5.0 km to 5.0 km24.4% from 5.0 km to 5.1 km17.9% from 5.1 km to 5.1 km4.7% from 5.1 km to 5.1 km-3.8% from 5.1 km to 5.2 km-0.4% from 5.2 km to 5.2 km19.4% from 5.2 km to 5.2 km18.3% from 5.2 km to 5.2 km0.6% from 5.2 km to 5.3 km9.8% from 5.3 km to 5.3 km11.8% from 5.3 km to 5.3 km4.0% from 5.3 km to 5.3 km3.1% from 5.3 km to 5.3 km-1.9% from 5.3 km to 5.4 km0.6% from 5.4 km to 5.4 km12.9% from 5.4 km to 5.4 km35.8% from 5.4 km to 5.4 km22.7% from 5.4 km to 5.4 km2.2% from 5.4 km to 5.4 km3.2% from 5.4 km to 5.5 km1.3% from 5.5 km to 5.5 km-4.3% from 5.5 km to 5.5 km-4.1% from 5.5 km to 5.6 km-1.3% from 5.6 km to 5.6 km-0.8% from 5.6 km to 5.6 km11.8% from 5.6 km to 5.6 km26.1% from 5.6 km to 5.7 km15.4% from 5.7 km to 5.7 km11.0% from 5.7 km to 5.7 km5.5% from 5.7 km to 5.7 km3.8% from 5.7 km to 5.8 km16.7% from 5.8 km to 5.8 km14.0% from 5.8 km to 5.8 km-1.5% from 5.8 km to 5.9 km-7.5% from 5.9 km to 5.9 km-3.1% from 5.9 km to 5.9 km6.0% from 5.9 km to 5.9 km4.2% from 5.9 km to 6.0 km-6.4% from 6.0 km to 6.0 km7.3% from 6.0 km to 6.0 km18.0% from 6.0 km to 6.1 km9.4% from 6.1 km to 6.1 km2.7% from 6.1 km to 6.1 km3.7% from 6.1 km to 6.1 km2.4% from 6.1 km to 6.2 km0.5% from 6.2 km to 6.2 km0.5% from 6.2 km to 6.2 km7.9% from 6.2 km to 6.3 km12.9% from 6.3 km to 6.3 km4.8% from 6.3 km to 6.3 km0.0% from 6.3 km to 6.4 km4.1% from 6.4 km to 6.4 km17.6% from 6.4 km to 6.4 km12.0% from 6.4 km to 6.4 km0.0% from 6.4 km to 6.4 km0.0% from 6.4 km to 6.5 km7.0% from 6.5 km to 6.5 km6.3% from 6.5 km to 6.5 km10.2% from 6.5 km to 6.5 km5.3% from 6.5 km to 6.6 km3.7% from 6.6 km to 6.6 km7.3% from 6.6 km to 6.6 km12.0% from 6.6 km to 6.6 km13.5% from 6.6 km to 6.7 km11.2% from 6.7 km to 6.7 km7.4% from 6.7 km to 6.7 km7.8% from 6.7 km to 6.7 km8.7% from 6.7 km to 6.7 km9.6% from 6.7 km to 6.8 km10.8% from 6.8 km to 6.8 km16.2% from 6.8 km to 6.8 km11.7% from 6.8 km to 6.8 km9.9% from 6.8 km to 6.8 km7.1% from 6.8 km to 6.9 km2.2% from 6.9 km to 6.9 km0.0% from 6.9 km to 6.9 km0.0% from 6.9 km to 6.9 km24.1% from 6.9 km to 6.9 km11.8% from 6.9 km to 7.0 km12.7% from 7.0 km to 7.0 km13.5% from 7.0 km to 7.0 km19.0% from 7.0 km to 7.0 km12.9% from 7.0 km to 7.0 km1.1% from 7.0 km to 7.1 km0.9% from 7.1 km to 7.1 km7.0% from 7.1 km to 7.1 km4.9% from 7.1 km to 7.1 km7.8% from 7.1 km to 7.1 km26.9% from 7.1 km to 7.2 km17.6% from 7.2 km to 7.2 km4.7% from 7.2 km to 7.2 km1.4% from 7.2 km to 7.2 km28.5% from 7.2 km to 7.2 km19.9% from 7.2 km to 7.3 km3.5% from 7.3 km to 7.3 km-1.1% from 7.3 km to 7.3 km0.4% from 7.3 km to 7.3 km3.6% from 7.3 km to 7.4 km1.2% from 7.4 km to 7.4 km5.4% from 7.4 km to 7.4 km8.0% from 7.4 km to 7.4 km24.2% from 7.4 km to 7.4 km10.1% from 7.4 km to 7.5 km21.3% from 7.5 km to 7.5 km16.4% from 7.5 km to 7.5 km6.5% from 7.5 km to 7.5 km4.3% from 7.5 km to 7.6 km2.9% from 7.6 km to 7.6 km1.7% from 7.6 km to 7.6 km13.6% from 7.6 km to 7.6 km23.8% from 7.6 km to 7.6 km13.7% from 7.6 km to 7.7 km16.9% from 7.7 km to 7.7 km13.5% from 7.7 km to 7.7 km15.9% from 7.7 km to 7.7 km14.4% from 7.7 km to 7.7 km16.9% from 7.7 km to 7.7 km28.2% from 7.7 km to 7.7 km21.8% from 7.7 km to 7.8 km4.6% from 7.8 km to 7.8 km-2.1% from 7.8 km to 7.8 km3.0% from 7.8 km to 7.8 km7.1% from 7.8 km to 7.8 km14.4% from 7.8 km to 7.8 km24.4% from 7.8 km to 7.8 km24.8% from 7.8 km to 7.8 km19.2% from 7.8 km to 7.9 km17.2% from 7.9 km to 7.9 km17.6% from 7.9 km to 7.9 km14.9% from 7.9 km to 7.9 km12.9% from 7.9 km to 7.9 km13.0% from 7.9 km to 7.9 km18.4% from 7.9 km to 8.0 km14.7% from 8.0 km to 8.0 km14.4% from 8.0 km to 8.0 km14.1% from 8.0 km to 8.0 km13.1% from 8.0 km to 8.0 km11.0% from 8.0 km to 8.0 km14.6% from 8.0 km to 8.0 km21.1% from 8.0 km to 8.1 km21.9% from 8.1 km to 8.1 km23.4% from 8.1 km to 8.1 km15.7% from 8.1 km to 8.1 km17.1% from 8.1 km to 8.1 km12.0% from 8.1 km to 8.1 km3.1% from 8.1 km to 8.2 km1.3% from 8.2 km to 8.2 km15.8% from 8.2 km to 8.2 km17.4% from 8.2 km to 8.2 km13.5% from 8.2 km to 8.2 km10.1% from 8.2 km to 8.2 km18.7% from 8.2 km to 8.3 km16.4% from 8.3 km to 8.3 km3.6% from 8.3 km to 8.3 km1.7% from 8.3 km to 8.3 km3.2% from 8.3 km to 8.4 km6.1% from 8.4 km to 8.4 km5.0% from 8.4 km to 8.4 km5.4% from 8.4 km to 8.4 km7.7% from 8.4 km to 8.5 km9.1% from 8.5 km to 8.5 km10.4% from 8.5 km to 8.5 km10.0% from 8.5 km to 8.5 km5.5% from 8.5 km to 8.6 km5.8% from 8.6 km to 8.6 km10.2% from 8.6 km to 8.6 km10.2% from 8.6 km to 8.6 km8.6% from 8.6 km to 8.7 km5.1% from 8.7 km to 8.7 km4.8% from 8.7 km to 8.7 km6.0% from 8.7 km to 8.7 km7.4% from 8.7 km to 8.7 km10.3% from 8.7 km to 8.8 km5.6% from 8.8 km to 8.8 km1.5% from 8.8 km to 8.8 km10.3% from 8.8 km to 8.8 km20.6% from 8.8 km to 8.8 km7.5% from 8.8 km to 8.8 km2.4% from 8.8 km to 8.9 km9.3% from 8.9 km to 8.9 km14.7% from 8.9 km to 8.9 km11.6% from 8.9 km to 8.9 km4.0% from 8.9 km to 8.9 km1.9% from 8.9 km to 8.9 km5.4% from 8.9 km to 9.0 km14.0% from 9.0 km to 9.0 km5.2% from 9.0 km to 9.0 km27.8% from 9.0 km to 9.0 km25.0% from 9.0 km to 9.0 km-3.4% from 9.0 km to 9.0 km0.0% from 9.0 km to 9.0 km-9.7% from 9.0 km to 9.1 km14.4% from 9.1 km to 9.1 km34.3% from 9.1 km to 9.1 km12.5% from 9.1 km to 9.1 km11.9% from 9.1 km to 9.1 km17.9% from 9.1 km to 9.2 km10.0% from 9.2 km to 9.2 km14.2% from 9.2 km to 9.2 km11.1% from 9.2 km to 9.2 km8.5% from 9.2 km to 9.3 km8.5% from 9.3 km to 9.3 km7.0% from 9.3 km to 9.3 km2.4% from 9.3 km to 9.4 km0.3% from 9.4 km to 9.4 km-2.0% from 9.4 km to 9.4 km-4.6% from 9.4 km to 9.5 km-6.9% from 9.5 km to 9.5 km-9.3% from 9.5 km to 9.6 km-4.7% from 9.6 km to 9.7 km5.3% from 9.7 km to 9.7 km7.9% from 9.7 km to 9.8 km7.8% from 9.8 km to 9.8 km6.4% from 9.8 km to 9.8 km7.3% from 9.8 km to 9.8 km12.6% from 9.8 km to 9.9 km11.4% from 9.9 km to 9.9 km5.3% from 9.9 km to 9.9 km6.1% from 9.9 km to 10.0 km6.5% from 10.0 km to 10.0 km4.7% from 10.0 km to 10.0 km2.8% from 10.0 km to 10.1 km-1.8% from 10.1 km to 10.1 km-5.5% from 10.1 km to 10.1 km-14.3% from 10.1 km to 10.2 km-28.9% from 10.2 km to 10.2 km-15.3% from 10.2 km to 10.2 km-4.0% from 10.2 km to 10.3 km12.1% from 10.3 km to 10.3 km11.9% from 10.3 km to 10.4 km1.4% from 10.4 km to 10.4 km0.5% from 10.4 km to 10.4 km0.9% from 10.4 km to 10.5 km1.0% from 10.5 km to 10.5 km4.2% from 10.5 km to 10.6 km7.6% from 10.6 km to 10.6 km6.8% from 10.6 km to 10.6 km9.3% from 10.6 km to 10.7 km8.5% from 10.7 km to 10.7 km9.9% from 10.7 km to 10.7 km13.6% from 10.7 km to 10.7 km14.7% from 10.7 km to 10.7 km10.5% from 10.7 km to 10.8 km4.5% from 10.8 km to 10.8 km4.8% from 10.8 km to 10.8 km6.1% from 10.8 km to 10.9 km6.1% from 10.9 km to 10.9 km5.3% from 10.9 km to 10.9 km6.5% from 10.9 km to 11.0 km5.1% from 11.0 km to 11.0 km-4.1% from 11.0 km to 11.0 km5%8%6%10%7%3%0 m2 km4 km6 km8 km10 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 1
Distance11.03 km / 6.85 miles
Elevation gain735.6 m / 2,413 ft
Average gradient6.7%
Maximum gradient18%
Elevation high2,393.14 m / 7,852 ft
Elevation low1,656.56 m / 5,435 ft
Climb difficulty score73,563.43

Similar Climbs Nearby

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

ClimbLengthGradientAscent
Flagstaff Summit from Broadway
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11.51 km6.4%755 m
Flagstaff Park to Peak
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9.53 km6.9%659 m
Flagstaff - 6th to the very top
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9.36 km6.6%648 m
hour of power
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9.39 km6.9%664 m
Super Flag from Boulder
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9.55 km7.3%698 m

Climb Rank

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

🗺

This climb ranks 12,427th out of 2,710,652 worldwide cycling climbs.

🧮

Ranked as the 793rd most difficult cycling climb of all 337,250 climbs in United States.

📉

Places 140th out of 13,296 cycling climbs in Colorado.

⚖

Ranks 38th out of 1,886 cycling climbs in Boulder County.

⚖

Ranking 16th out of 694 cycling climbs in Boulder.

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