235
riders
32
rides
Road cycling around Mount Hamilton is characterized by oak-strewn hills and verdant rolling landscapes, forming part of the rugged Diablo Range. The region features a consistently graded ascent via Mount Hamilton Road, known for its numerous curves and well-maintained surface. This area offers sustained climbs that demand endurance, providing expansive views of San Jose and the surrounding valleys.
Last updated: May 13, 2026
20
riders
43.3km
01:49
270m
270m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.
15
riders
43.8km
01:47
240m
240m
Easy road ride. Great for any fitness level. Mostly well-paved surfaces and easy to ride.

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8
riders
74.3km
03:18
620m
620m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
5
riders
65.5km
02:45
430m
420m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
5
riders
83.1km
03:29
570m
570m
Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.
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Popular around Mount Hamilton
A row of terraced houses just outside the town of Randalstown. An important military location, these houses could've been used as barracks or staff housing. The symmetry of these houses is very pleasing as you ride past.
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This is the best preserved court tomb in the Causeway Coast area. A Neolithic tomb dating from c.4000 to 2000 BC. It was excavated twice, in 1935 and 1975. It consists of a horse shoe shaped forecourt that leads into a small chamber. There is a cremation passage behind the chamber containing three pits, one of these pits held the remains of several people. This form of cremation passage is the only one of its type found in Ireland.
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Nice small town to walk around and some great history of Randalstown
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Hit it heavy at the start, then drop gears for the steep middle section, finish strong as it evens out!
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Road cycling around Mount Hamilton is primarily known for its sustained climbs, demanding endurance rather than explosive power. The main ascent via Mount Hamilton Road features a consistent, moderate grade, typically between 5-7%. While the guide includes 9 easy routes, the majority, 27 routes, are classified as moderate, involving significant elevation gains of 4,000 to 5,000 feet.
The terrain is characterized by picturesque East Bay landscapes, featuring oak-strewn hills and verdant rolling terrain, especially vibrant in spring. The road surface on Mount Hamilton Road is generally well-maintained, offering a high-quality cycling experience with numerous curves, estimated to be around 365, adding to the unique ride.
Yes, the most significant landmark is the Lick Observatory located at the summit. It's a historical site with exhibits and telescopes. Cyclists are also rewarded with expansive panoramic views of San Jose, the San Francisco Bay, and surrounding hills, extending to the Santa Cruz Mountains and even Monterey Bay on clear days.
As you ascend Mount Hamilton, the views become increasingly expansive. You'll find breathtaking vistas of San Jose, the southern San Francisco Bay, and the surrounding valleys. On clear days, these views can stretch all the way to the Santa Cruz Mountains and Monterey Bay, offering numerous scenic spots to pause and take in the scenery.
There are over 30 road cycling routes available in the Mount Hamilton area, with 36 routes detailed in this guide. These routes cater to various skill levels, including 9 easy and 27 moderate options.
The spring season is particularly recommended for road cycling in Mount Hamilton, as the hills are verdant and vibrant. Clear days offer the most spectacular panoramic views. It's always advisable to check weather conditions before planning your ride, especially for the sustained climbs.
Yes, the guide includes several circular routes. For example, you can explore the Roadbike loop from Cloughmills, the Motte loop from Cloughmills, or the more challenging Rougery Hill β Bark Hill Climb loop from Cloughmills.
Cyclists frequently praise Mount Hamilton for its iconic and demanding climb, the well-maintained road surface, and the 'endless serpentining' of its numerous curves. The reward of expansive and breathtaking panoramic views from the summit, especially of San Jose and the San Francisco Bay, is also a highlight for many.
Absolutely. Mount Hamilton Road is renowned for its demanding and sustained climb, making it a prime destination for advanced cyclists. With an elevation gain of 4,000 to 5,000 feet over approximately 18-18.6 miles and a consistent 5-7% grade, it offers a significant endurance challenge. For an even steeper ascent, some cyclists opt for routes like Quimby Road.
While the main ascent of Mount Hamilton is quite challenging, the guide does feature 9 routes classified as 'easy'. These routes typically have less elevation gain and shorter distances, making them more suitable for families or those seeking a less strenuous ride. You might consider routes like the Roadbike loop from Cloughmills for a more accessible experience.
Road cycling routes up Mount Hamilton involve a substantial elevation gain, typically ranging from 4,000 to 5,000 feet. The main ascent via Mount Hamilton Road from San Jose covers approximately 18 to 18.6 miles to the summit, with a consistent and manageable grade.
While specific parking locations are not detailed in this guide, cyclists typically find parking at the base of the main climbs or near the starting points of popular routes in areas surrounding Mount Hamilton, such as near San Jose or Alum Rock. It's advisable to research specific trailhead parking options before your ride.


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