2027 Carlsbad Marathon - Jan 17 Countdown

Q: When is the 2027 Carlsbad Marathon and what time does it start?

The 2027 Carlsbad Marathon is on Sunday, January 17, 2027, with the full marathon starting at 6:15 a.m. PT. The marathon, half marathon and 5K all start and finish at The Shoppes at Carlsbad (2525 El Camino Real). The 5K goes off at 6:40 a.m. and the much larger half marathon at 7:45 a.m.

Q: How much elevation gain does the Carlsbad Marathon have?

Very little. The course tops out at just 73 feet above sea level, and total elevation change is about 782 feet of combined gain and loss spread over the full 26.2 miles. Because it is an out-and-back, you finish at the same elevation you started, so the day is essentially net-flat and gently rolling rather than hilly — one reason it is considered one of the fastest courses in the San Diego area.

Q: Is the Carlsbad Marathon a Boston qualifier?

Yes. The Carlsbad Marathon is a USATF-certified, official Boston Marathon qualifier. Its flat, fast coastal profile and mild January weather help runners chase qualifying times — about 7.7% of full-marathon finishers qualified for Boston in 2025 (9.5% in 2024). Check your target time with our Boston qualifying calculator.

Q: What is the time limit for the Carlsbad Marathon?

The full marathon has a 6-hour time limit, which works out to roughly a 13:44 per mile average pace. Plan your splits with our pace calculator so you stay ahead of the cutoff and the course-support turnarounds.

Q: What is the Carlsbad Marathon course like?

It is a scenic coastal out-and-back. The first miles wind through Carlsbad's streets past the Buena Vista Lagoon, then the course joins Highway 101 / Carlsbad Boulevard and runs along the Pacific bluffs, spending more than 18 of its 26.2 miles on the oceanfront with about 8 miles of open-ocean views. A steady sea breeze and the gently rolling terrain make it fast and atmospheric.

Q: How do I register for the 2027 Carlsbad Marathon and what does it cost?

Registration is handled online through Race Roster for the event produced by In Motion Events. Entry opens at about $157 for the early-bird tier and rises as race weekend approaches, so register early. English-language online registration is straightforward for international runners.

Q: What is the weather like for the Carlsbad Marathon?

Mid-January on the North County coast is mild and mostly dry — a race-morning low near 51°F (11°C) warming to a high around 64°F (18°C), with roughly a 12–15% chance of rain. It is comfortable PR weather; dress for a cool pre-dawn start and an ocean breeze along the coast.

Q: Is the Carlsbad Marathon the same as the Rock 'n' Roll San Diego race?

No — they are two different events. The Carlsbad Marathon is a January race in Carlsbad, in San Diego's North County, run along the Pacific coast road, while Rock 'n' Roll San Diego is a separate spring race based in downtown San Diego. If you want a coastal January marathon north of the city, Carlsbad is the one.

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Race Information

Race	2027 Carlsbad Marathon - Jan 17
City	Carlsbad
Date	2027-01-17 at 06:15
Field Size	~1,186 runners
Time Limit	6 hours
Cutoff pace	8:32/km
Timezone	America/Los_Angeles
Official Site	In Motion Events
Registration	Register · 157 USD

Race Day Weather

Average Temperature	14.8°C / 59°F
Humidity	71%
Wind	15.6 km/h
Rain Chance	20%
Typical Conditions	Mild, sunny North County coastal January morning — comfortable PR weather by the Pacific

What to Prepare: Mid-January in Carlsbad is mild and dry, with a race-morning low near 51°F / 11°C climbing to a high around 64°F / 18°C. The 6:15 a.m. gun goes off in pre-dawn coolness just before sunrise, so a throwaway long-sleeve helps for the first miles; once you turn onto the open coast a steady sea breeze keeps you cool, so don't overdress.

Based on historical averages for race week. Use our Weather Score Calculator and What to Wear Guide for personalized advice.

Wind Impact on Race Day

Wind at 15.6 km/h can affect your marathon pace by 5-15 seconds per kilometer. Headwinds slow you down exponentially — a 20 km/h wind costs more than twice a 10 km/h wind.

Calculate your wind-adjusted pace →

Race-Week Climate

Based on 20 years of race-week weather (2005-2024), MERRA-2 reanalysis

	Cooler	Typical	Warmer
Temperature	12.4°C	14.8°C	17.4°C
Dew point	4.5°C	8.9°C	12.7°C

Wet-day chance: 20% Runnability: 79/100

Data: NASA POWER (MERRA-2 reanalysis), NASA Langley Research Center

Course Profile

Course Type	Out-and-back (multiple turnarounds)
Elevation Gain	119m
Terrain	Road (coastal Highway 101 / Carlsbad Boulevard and city streets, paved throughout)
Profile	A fast, gently rolling coastal out-and-back that has earned a reputation as one of the quickest marathons in the San Diego area. The first couple of miles run through Carlsbad's city streets and past the Buena Vista Lagoon before the course drops onto Highway 101 / Carlsbad Boulevard and opens up along the Pacific bluffs. From there it spends more than 18 of its 26.2 miles tracing the oceanfront on the historic coast road, with roughly 8 miles of unobstructed open-ocean views. The profile tops out at just 73 feet above sea level and never climbs hard — total elevation change is only about 782 feet of combined gain and loss spread across the whole route, and because it is an out-and-back the course returns to its start elevation for an essentially net-flat day. That gentle terrain plus the energizing sea breeze make Carlsbad a genuine PR and Boston-qualifying option: it is USATF-certified, and about 7.7% of full-marathon finishers qualified for Boston in 2025 (9.5% in 2024). Note this is the separate North County coastal marathon — not the Rock 'n' Roll race in downtown San Diego.
Boston Qualifier	Yes — Check your BQ time

Prepare for 2027 Carlsbad Marathon - Jan 17

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Frequently Asked Questions

When is the 2027 Carlsbad Marathon and what time does it start?

The 2027 Carlsbad Marathon is on Sunday, January 17, 2027, with the full marathon starting at 6:15 a.m. PT. The marathon, half marathon and 5K all start and finish at The Shoppes at Carlsbad (2525 El Camino Real). The 5K goes off at 6:40 a.m. and the much larger half marathon at 7:45 a.m.

How much elevation gain does the Carlsbad Marathon have?

Very little. The course tops out at just 73 feet above sea level, and total elevation change is about 782 feet of combined gain and loss spread over the full 26.2 miles. Because it is an out-and-back, you finish at the same elevation you started, so the day is essentially net-flat and gently rolling rather than hilly — one reason it is considered one of the fastest courses in the San Diego area.

Is the Carlsbad Marathon a Boston qualifier?

Yes. The Carlsbad Marathon is a USATF-certified, official Boston Marathon qualifier. Its flat, fast coastal profile and mild January weather help runners chase qualifying times — about 7.7% of full-marathon finishers qualified for Boston in 2025 (9.5% in 2024). Check your target time with our Boston qualifying calculator.

What is the time limit for the Carlsbad Marathon?

The full marathon has a 6-hour time limit, which works out to roughly a 13:44 per mile average pace. Plan your splits with our pace calculator so you stay ahead of the cutoff and the course-support turnarounds.

What is the Carlsbad Marathon course like?

It is a scenic coastal out-and-back. The first miles wind through Carlsbad's streets past the Buena Vista Lagoon, then the course joins Highway 101 / Carlsbad Boulevard and runs along the Pacific bluffs, spending more than 18 of its 26.2 miles on the oceanfront with about 8 miles of open-ocean views. A steady sea breeze and the gently rolling terrain make it fast and atmospheric.

How do I register for the 2027 Carlsbad Marathon and what does it cost?

Registration is handled online through Race Roster for the event produced by In Motion Events. Entry opens at about $157 for the early-bird tier and rises as race weekend approaches, so register early. English-language online registration is straightforward for international runners.

What is the weather like for the Carlsbad Marathon?

Mid-January on the North County coast is mild and mostly dry — a race-morning low near 51°F (11°C) warming to a high around 64°F (18°C), with roughly a 12–15% chance of rain. It is comfortable PR weather; dress for a cool pre-dawn start and an ocean breeze along the coast.

Is the Carlsbad Marathon the same as the Rock 'n' Roll San Diego race?

No — they are two different events. The Carlsbad Marathon is a January race in Carlsbad, in San Diego's North County, run along the Pacific coast road, while Rock 'n' Roll San Diego is a separate spring race based in downtown San Diego. If you want a coastal January marathon north of the city, Carlsbad is the one.