BikeClimbs.com

Tunnel to the Top

📍
Longmont-to-Boulder (LOBO) Regional Trail, Niwot, Boulder County, Colorado, 80544, United States
UncategorisedFlag this climb

Estimated Climb Time

Loading your rider settings for Tunnel to the Top...

Save your rider settings to unlock climb-time estimates and the effort table below.

Climb Profile

Altitude builds left to right while colour shows gradient severity for each part of Tunnel to the Top.

1535 m1570 m1600 m1635 m-7.2% from 0 m to 54 m-8.7% from 54 m to 90 m1.6% from 90 m to 153 m-2.7% from 153 m to 198 m1.5% from 198 m to 205 m4.0% from 205 m to 235 m1.5% from 235 m to 262 m-1.5% from 262 m to 321 m-1.1% from 321 m to 382 m-2.7% from 382 m to 411 m-3.2% from 411 m to 473 m-2.5% from 473 m to 501 m-1.5% from 501 m to 562 m-0.7% from 562 m to 616 m0.4% from 616 m to 640 m1.3% from 640 m to 687 m2.3% from 687 m to 700 m2.5% from 700 m to 740 m2.0% from 740 m to 750 m2.7% from 750 m to 765 m0.6% from 765 m to 799 m0.3% from 799 m to 828 m0.0% from 828 m to 890 m0.3% from 890 m to 919 m-1.3% from 919 m to 979 m0.3% from 979 m to 1.0 km0.6% from 1.0 km to 1.1 km0.6% from 1.1 km to 1.1 km-1.1% from 1.1 km to 1.2 km-1.1% from 1.2 km to 1.3 km-0.3% from 1.3 km to 1.3 km1.5% from 1.3 km to 1.3 km1.5% from 1.3 km to 1.3 km5.7% from 1.3 km to 1.3 km1.3% from 1.3 km to 1.4 km2.4% from 1.4 km to 1.4 km-1.6% from 1.4 km to 1.5 km-1.5% from 1.5 km to 1.5 km-2.1% from 1.5 km to 1.5 km-1.8% from 1.5 km to 1.5 km-1.2% from 1.5 km to 1.6 km-0.5% from 1.6 km to 1.6 km-0.4% from 1.6 km to 1.7 km-0.4% from 1.7 km to 1.7 km-0.9% from 1.7 km to 1.8 km-1.1% from 1.8 km to 1.8 km-0.4% from 1.8 km to 1.8 km-0.4% from 1.8 km to 1.9 km-0.2% from 1.9 km to 1.9 km0.0% from 1.9 km to 2.0 km1.2% from 2.0 km to 2.0 km0.2% from 2.0 km to 2.0 km1.2% from 2.0 km to 2.0 km0.0% from 2.0 km to 2.0 km0.3% from 2.0 km to 2.1 km0.4% from 2.1 km to 2.1 km-1.9% from 2.1 km to 2.2 km1.1% from 2.2 km to 2.2 km0.5% from 2.2 km to 2.2 km1.0% from 2.2 km to 2.3 km-3.9% from 2.3 km to 2.3 km7.4% from 2.3 km to 2.3 km-8.4% from 2.3 km to 2.4 km6.4% from 2.4 km to 2.4 km-1.1% from 2.4 km to 2.4 km4.6% from 2.4 km to 2.5 km0.0% from 2.5 km to 2.5 km-1.2% from 2.5 km to 2.5 km-0.7% from 2.5 km to 2.6 km-2.8% from 2.6 km to 2.6 km3.8% from 2.6 km to 2.6 km-0.6% from 2.6 km to 2.7 km-0.7% from 2.7 km to 2.7 km-0.5% from 2.7 km to 2.7 km0.0% from 2.7 km to 2.7 km-0.4% from 2.7 km to 2.8 km-0.7% from 2.8 km to 2.8 km-0.9% from 2.8 km to 2.9 km-1.1% from 2.9 km to 2.9 km-2.3% from 2.9 km to 3.0 km-2.7% from 3.0 km to 3.0 km-1.9% from 3.0 km to 3.0 km-0.6% from 3.0 km to 3.1 km-0.5% from 3.1 km to 3.1 km-0.1% from 3.1 km to 3.2 km-0.2% from 3.2 km to 3.2 km1.1% from 3.2 km to 3.3 km-0.5% from 3.3 km to 3.4 km-2.3% from 3.4 km to 3.4 km-1.0% from 3.4 km to 3.4 km0.0% from 3.4 km to 3.5 km0.0% from 3.5 km to 3.5 km-0.3% from 3.5 km to 3.5 km-0.6% from 3.5 km to 3.5 km-1.3% from 3.5 km to 3.6 km-2.2% from 3.6 km to 3.6 km-1.5% from 3.6 km to 3.6 km-0.8% from 3.6 km to 3.7 km0.0% from 3.7 km to 3.7 km-0.8% from 3.7 km to 3.7 km-0.2% from 3.7 km to 3.8 km-0.2% from 3.8 km to 3.9 km0.0% from 3.9 km to 3.9 km0.5% from 3.9 km to 4.0 km1.3% from 4.0 km to 4.1 km2.4% from 4.1 km to 4.1 km5.2% from 4.1 km to 4.2 km8.1% from 4.2 km to 4.2 km10.2% from 4.2 km to 4.2 km7.3% from 4.2 km to 4.3 km5.5% from 4.3 km to 4.3 km6.3% from 4.3 km to 4.4 km5.3% from 4.4 km to 4.4 km4.7% from 4.4 km to 4.5 km3.6% from 4.5 km to 4.5 km2.2% from 4.5 km to 4.6 km0.8% from 4.6 km to 4.7 km0.6% from 4.7 km to 4.7 km0.5% from 4.7 km to 4.8 km0.3% from 4.8 km to 4.8 km0.5% from 4.8 km to 4.9 km1.0% from 4.9 km to 4.9 km1.4% from 4.9 km to 5.0 km-0.8% from 5.0 km to 5.0 km0.5% from 5.0 km to 5.1 km-1.3% from 5.1 km to 5.1 km0.2% from 5.1 km to 5.1 km-0.2% from 5.1 km to 5.2 km0.7% from 5.2 km to 5.2 km2.4% from 5.2 km to 5.3 km2.5% from 5.3 km to 5.3 km3.5% from 5.3 km to 5.3 km5.5% from 5.3 km to 5.4 km4.0% from 5.4 km to 5.4 km2.4% from 5.4 km to 5.5 km4.0% from 5.5 km to 5.5 km4.1% from 5.5 km to 5.6 km5.0% from 5.6 km to 5.6 km4.5% from 5.6 km to 5.7 km3.7% from 5.7 km to 5.7 km6.9% from 5.7 km to 5.8 km4.8% from 5.8 km to 5.9 km2.9% from 5.9 km to 5.9 km4.8% from 5.9 km to 5.9 km4.1% from 5.9 km to 5.9 km6.1% from 5.9 km to 6.0 km7.5% from 6.0 km to 6.0 km6.3% from 6.0 km to 6.1 km6.0% from 6.1 km to 6.1 km7.8% from 6.1 km to 6.1 km5.1% from 6.1 km to 6.1 km5.2% from 6.1 km to 6.1 km6.0% from 6.1 km to 6.1 km4.5% from 6.1 km to 6.2 km5.2% from 6.2 km to 6.2 km3.0% from 6.2 km to 6.2 km4.3% from 6.2 km to 6.3 km3.9% from 6.3 km to 6.3 km2.0% from 6.3 km to 6.4 km2.5% from 6.4 km to 6.4 km4.0% from 6.4 km to 6.5 km1.4% from 6.5 km to 6.6 km0.5% from 6.6 km to 6.6 km1.0% from 6.6 km to 6.7 km3.0% from 6.7 km to 6.8 km4.4% from 6.8 km to 6.8 km4.1% from 6.8 km to 6.8 km1.4% from 6.8 km to 6.9 km-0.2% from 6.9 km to 6.9 km-1.0% from 6.9 km to 7.0 km-1.8% from 7.0 km to 7.0 km-1%-0%-0%-0%3%3%3%0 m1 km2 km3 km4 km5 km6 km7 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 categoryUncategorised
Distance7.04 km / 4.37 miles
Elevation gain71.1 m / 233 ft
Average gradient1%
Maximum gradient8.1%
Elevation high1,631.9 m / 5,354 ft
Elevation low1,536.6 m / 5,041 ft
Climb difficulty score7,110.6

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
Haystack TT - Segment 4
Niwot, Boulder County
7.56 km1.1%91 m
Oxford - Diagonal to 49th
Niwot, Boulder County
7.33 km1.2%90 m
Niwot Trail, Backside to Lookout
Niwot, Boulder County
6.07 km1%58 m
Niwot/63 -> Neva/36
Niwot, Boulder County
7.07 km1.4%101 m
Diagonal: Niwot to Jay
Niwot, Boulder County
7.48 km0.7%52 m

Climb Rank

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

🗺

This climb ranks 835,356th out of 2,710,652 worldwide cycling climbs.

🧮

Ranked as the 72,965th most difficult cycling climb of all 337,250 climbs in United States.

📉

Places 4,580th out of 13,296 cycling climbs in Colorado.

⚖

Ranks 745th out of 1,886 cycling climbs in Boulder County.

⚖

Ranking 22nd out of 90 cycling climbs in Niwot.

Useful Links

View this climb on other sites.

Google Street View
Strava

Something wrong with this listing? Help keep BikeClimbs accurate.

Flag this climb