Santa Rosa Marathon

Santa Rosa, CA, USA · August 22, 2027·
partly-cloudy-day59°·67° high·Calm·Dry
6
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Santa Rosa Marathon race day weather

partly-cloudy-day
59°at start
79° high
Light
Dry
Your goal
0:00:00

Mild start, adjust for humidity

Runners will face a temperature rise from 59°F at the start to 67°F by the finish, with an average humidity of 71%. The wind will be light at 6 mph, primarily affecting the race with crosswinds in various miles and a tailwind in the later segments. Runners should consider starting conservatively due to the humidity and adjust their pace, particularly in the headwind sections from Miles 2-8 and 17-20.

Race day forecast available in 267 days
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Pace Calculator

26.2mi
0:00:00
HH:MM:SS
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Santa Rosa Marathon route and elevation

The Santa Rosa Marathon course has about 255 ft (78 m) of climbing and 252 ft (77 m) of descent, and finishes near the elevation it starts. It is flatter than 59% of the marathon courses racecast.io has mapped, measured by what the hills cost in time. It has no steep miles: no mile climbs more than 40 ft (12 m).

Biggest climbs

  • Miles 12.9 to 15.6: climbs about 50 ft (15 m).
  • Miles 20.6 to 25.9: climbs about 95 ft (29 m).

What the hills cost

  • 3:30 on a flat course is about 3:30:40 here (40 seconds slower).
  • 4:00 on a flat course is about 4:00:45 here (45 seconds slower).
  • 4:30 on a flat course is about 4:30:50 here (50 seconds slower).

Hills only, priced mile by mile on the course map. The pace calculator above adds the race-day weather.

Even-effort splits for a 3:30, 4:00 or 4:30 finish
The Santa Rosa Marathon mile splits at even effort for three finish times, with each mile's climb and descent
MileClimbDescent3:304:004:30
113 ft8 ft8:019:1010:18
29 ft36 ft7:528:5910:08
311 ft24 ft7:569:0410:11
44 ft20 ft7:559:0310:11
57 ft22 ft7:559:0310:11
61 ft13 ft7:569:0410:12
72 ft5 ft7:589:0610:14
83 ft13 ft7:579:0510:13
925 ft7 ft8:079:1710:27
1034 ft22 ft8:059:1410:23
118 ft14 ft7:589:0610:14
1217 ft21 ft7:579:0610:14
1324 ft21 ft8:009:0910:18
1437 ft0 ft8:189:2810:39
159 ft11 ft7:589:0710:15
168 ft2 ft8:029:1010:20
173 ft6 ft7:589:0710:14
180 ft20 ft7:549:0110:10
191 ft15 ft7:559:0310:11
205 ft34 ft7:529:0010:06
2112 ft3 ft8:039:1210:22
2212 ft0 ft8:059:1410:23
2325 ft11 ft8:069:1510:24
2423 ft5 ft8:079:1710:28
2523 ft5 ft8:099:1810:27
2637 ft15 ft8:109:2110:31
Last 0.20 ft2 ft1:462:012:16

Explore the Santa Rosa Marathon course with the weather and your pace along the route, or compare it with other races.

Race Plan

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A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.

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T-Minus
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Spectator Guide
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About the Santa Rosa Marathon

The Santa Rosa Marathon offers runners a scenic journey through California's renowned wine country, featuring a flat and fast course that winds through downtown Santa Rosa, along the Santa Rosa Creek Trail, and into the picturesque vineyards of west Sonoma County. A unique highlight is the route's passage through the barrel room of DeLoach Vineyards, providing a memorable experience for participants. The event fosters a festive atmosphere with a post-race celebration at Old Courthouse Square, where runners can enjoy complimentary beverages and a bottle of wine from DeLoach Vineyards.

Race weekend

Saturday, August 21
7:00 AM10K (6.2 mi)
9:00 AM5K (3.1 mi)
Sunday, August 22
6:30 AMMarathon (26.2 mi)
7:45 AMHalf Marathon (13.1 mi)

Santa Rosa Marathon FAQ

When is the 2027 Santa Rosa Marathon?

The 2027 Santa Rosa Marathon will be held on Sunday August 22, 2027.

Is the Santa Rosa Marathon a Boston Marathon Qualifier?

Yes, the Santa Rosa Marathon is an official Boston Marathon qualifier.

What is the time limit for the Santa Rosa Marathon?

The time limit for the Santa Rosa Marathon is 6 hours.

What will the weather be like for the 2027 Santa Rosa Marathon?

The forecast calls for a high of 81°F and a low of 58°F with a 0% chance of rain.

What is the elevation gain of the Santa Rosa Marathon?

The Santa Rosa Marathon course has about 255 ft (78 m) of climbing and 252 ft (77 m) of descent, and finishes near the elevation it starts.

Is the Santa Rosa Marathon flat?

Yes. It has about 10 ft (3 m) of climbing per mile, and no mile climbs more than 40 ft (12 m). 4:00 on a flat course is about 4:00:45 here (45 seconds slower). It is flatter than 59% of the marathon courses racecast.io has mapped, measured by what the hills cost in time.

What is the weather usually like for the Santa Rosa Marathon?

Over the 17 years racecast.io has race-day weather for (2009 to 2026), it averaged 54°F at the start and 61°F by a typical finish. It has not rained during race hours in any of those years.

What was the hottest Santa Rosa Marathon?

Of the 17 years on record, 2017 was the warmest, reaching 72°F during race hours. The coldest start was 2024, at 50°F.

What was the windiest Santa Rosa Marathon?

Of the 17 years on record, 2024 was the windiest, with wind averaging 4 mph during race hours. The calmest was 2026, at 1 mph.

Santa Rosa Marathon weather history

Based on 17 years of data
Avg Temp
57°F
L:54° H:61°
RunScore
8
Conditions
Rain Freq
0%
0 of 17 yrs
Wind2mph
Dew52°F

Temperature History

Range of temperatures during race hours for each year.

Detailed History

YearConditionsLow / HighRainScoreResults
2026
clear-night
50°/69°-
7
2025
cloudy
56°/58°-
8
2024
clear-night
50°/68°-
7
2023
cloudy
54°/61°-
7
2022
cloudy
55°/58°-
8
2021
cloudy
55°/57°-
8
2019
partly-cloudy-night
55°/66°-
7
2018
cloudy
53°/55°-
8
2017
clear-night
55°/72°-
7
2016
cloudy
58°/61°-
9
2015
cloudy
60°/63°-
6
2014
cloudy
58°/61°-
7
2013
partly-cloudy-night
57°/66°-
7
2012
cloudy
53°/56°-
8
2011
fog
51°/53°-
8
2010
cloudy
51°/58°-
9
2009
cloudy
52°/56°-
9