Rock 'n' Roll San Jose Half Marathon
San Jose, United States of America · Monday 5 October 2026
The Rock ‘n’ Roll San Jose Half Marathon is a popular race held in San Jose, California, part of the Rock ‘n’ Roll Marathon Series. The event is known for its musical vibe, with live bands playing along the course to keep runners energized and motivated. The race takes participants through downtown San Jose, passing historic buildings, local landmarks, and scenic spots such as Guadalupe River Park. The course is mostly flat, making it ideal for those aiming to set a personal best.
Difficulty Calculator
h
:m
:s
Adjusted Time
1:43:42
Time difference: -1.3 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain25m
Elevation High39m
Elevation Low18m
Weather Forecast
High27°C
Low11°C
Chance of Rain1%
How hard is Rock 'n' Roll San Jose Half Marathon?
Moderateharder than 24% of half marathons
Flattest / easiestHardest
On our difficulty model, Rock 'n' Roll San Jose Half Marathon plays about 1 minute slower than an average road half marathon for a 1:30 runner. It ranks #340 hardest of 450 half marathons we analyse, and #120 of 145 in United States of America. Use the calculator above to see the exact adjusted time for your own goal pace.
What will you run at Rock 'n' Roll San Jose Half Marathon?
Estimated finish times on this course versus the same effort on an average road half marathon, based on its elevation, surface, and expected race-day temperature.
| Average-course time | On Rock 'n' Roll San Jose Half Marathon | Difference |
|---|---|---|
| 1:30:00 | 1:28:35 | −01:25 |
| 1:45:00 | 1:43:42 | −01:18 |
| 2:00:00 | 1:58:50 | −01:10 |
| 2:15:00 | 2:13:58 | −01:02 |
| 2:30:00 | 2:29:06 | −00:54 |
| 2:45:00 | 2:44:14 | −00:46 |
| 3:00:00 | 2:59:23 | −00:37 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Rock 'n' Roll San Jose Half Marathon 2026 Course Analysis
Rock 'n' Roll San Jose Half Marathon is a half marathon held in San Jose, United States of America. It is scheduled for Monday 5 October 2026. The course is run on road surface with 25m of total climbing, with its high point near 39m above sea level. For registration and full race details, visit the official Rock 'n' Roll San Jose Half Marathon website.
Elevation Profile
This is a very flat course, with only 25m of total climbing and little change in altitude throughout. Flat profiles let you hold an even pace from start to finish, which makes this a fast, PB-friendly race.
Expected Race Day Weather
Based on historical weather data for October, the expected race day conditions are as follows. Moderate temperatures between 11°C and 27°C are expected. While comfortable for most runners, those targeting fast times should pay attention to hydration, as these temperatures can impact performance on race day. There is a low chance of rain (1%), so dry conditions are likely.
Surface Type: Road
Rock 'n' Roll San Jose Half Marathon is run on road surfaces, which provide the fastest and most predictable conditions for racing. Road courses allow for consistent pacing and are typically the best choice for a personal best.
Looking for an easier marathon or a tougher challenge? You can also compare Rock 'n' Roll San Jose Half Marathon against other half marathons to find the right race for your goals.
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