2026 Jersey Marathon - Oct 4 Countdown

Q: How do you enter the Jersey Marathon?

Entry is open and first-come — there is no lottery. Sign up online through the official site while places remain. Pricing is tiered by date: an early-bird entry around &pound;50 (slightly less with running-club affiliation) rising to roughly &pound;81 in race week, so booking early is the cheaper option.

Q: Is the Jersey Marathon course hilly?

Yes — it is a genuinely hilly island loop, not a flat course. Total climbing is roughly +330 m, with the toughest stretch being the early climb up Waterworks Valley after the start in St Helier. The reward is the run is mostly downhill and flat over the final miles along The Railway Walk back into town.

Q: Is the Jersey Marathon a Boston qualifier?

Yes — the course is an officially measured marathon distance run under UK Athletics licensing, so a Boston-qualifying time run here is eligible. Note that the hills and exposed coastal wind make it a harder course to chase a fast time on than a flat road race, so plan your pacing for the elevation.

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

There is an official six-hour time limit for the full marathon. With a 09:00 start, that puts the course cut-off around 15:00. Six hours is comfortable for most marathoners, but plan a small buffer for the headwind on the exposed western stretches.

Q: What is the weather like for the Jersey Marathon in October?

Expect mild but breezy conditions: early October on Jersey averages around 15&deg;C / 59&deg;F with humidity near 79% and coastal wind around 23 km/h. Showers are common this time of year. A light, packable wind layer is more useful than heavy warm kit.

Q: Where does the Jersey Marathon start and finish?

Both the start and finish are at Weighbridge Place in St Helier, Jersey's capital. The course is a circular tour of the island heading west and north through St Ouen and St Brelade before returning to a flat finishing avenue in the town centre — handy for spectators and post-race logistics.

Q: How many runners take part?

The full marathon is a small field — about 371 finishers in 2024. The wider race weekend draws far more (over 2,500 across the marathon, relay and Marathon Mile), but the standalone 42.195 km event is intimate, which suits runners who prefer space over big-city crowds.

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Race Information

Race	2026 Jersey Marathon - Oct 4
City	St Helier
Date	2026-10-04 at 09:00
Field Size	~371 runners
Time Limit	6 hours
Cutoff pace	8:32/km
Timezone	Europe/Jersey
Official Site	3D Events (Standard Chartered Jersey Marathon)

Race Day Weather

Average Temperature	15.6°C / 60°F
Humidity	82%
Wind	29.7 km/h
Rain Chance	47%
Typical Conditions	Mild, humid autumn morning with frequent Atlantic wind off the bays

What to Prepare: Early October on Jersey averages around 15°C / 59°F with high humidity (~79%) and exposed coastal wind near 23 km/h. The breeze, not the heat, is the variable here — the open stretches above St Ouen and St Brelade can be brisk, so a light wind layer beats overdressing.

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 29.7 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	13.9°C	15.6°C	17.6°C
Dew point	9.6°C	12.8°C	15.3°C

Wet-day chance: 47% Runnability: 67/100

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

Course Profile

Course Type	Loop (circular island tour)
Elevation Gain	330m
Terrain	Road (coastal lanes and valley roads)
Profile	A genuinely hilly island loop, not a flat PR course. From the Weighbridge in St Helier the route heads up Waterworks Valley early, traverses the north and west of the island through St Ouen and St Brelade, then drops down The Railway Walk for a flat finishing avenue back into town — roughly +330 m of total climbing. Officially measured under UK Athletics licensing and a Boston-qualifying-eligible distance; entry is open (first-come), no lottery.
Boston Qualifier	Yes — Check your BQ time

Prepare for 2026 Jersey Marathon - Oct 4

Use our free training tools to get race-ready:

Running Pace Calculator — Min/km, Finish Time & Pace Chart

Free running pace calculator for 5K, 10K, half marathon, and marathon. Get min/km or min/mile, your ...

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Free Pace Band Generator — Printable Race Day Wristband

Free printable pace band for marathon, half marathon, or custom distance. Choose even, negative, or ...

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Marathon Wake-Up Time Calculator — Race Morning Timeline

7 AM race, wake at 3:45 AM? Enter the gun time; we work backward through meal, gear, bathroom, warm-...

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Dew Point Running Calculator — Pace Adjustment Chart

Enter temperature and humidity to calculate dew point and its impact on your running pace. 7-zone ch...

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Wind Effect on Running — How Much Does Wind Slow You?

How much does a headwind actually slow you down? This free calculator turns wind speed and direction...

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Elevation Gain/Loss Impact Calculator

How much will hills slow you down? Enter elevation gain, loss, and distance to see adjusted pace, di...

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View all running tools

Frequently Asked Questions

How do you enter the Jersey Marathon?

Entry is open and first-come — there is no lottery. Sign up online through the official site while places remain. Pricing is tiered by date: an early-bird entry around £50 (slightly less with running-club affiliation) rising to roughly £81 in race week, so booking early is the cheaper option.

Is the Jersey Marathon course hilly?

Yes — it is a genuinely hilly island loop, not a flat course. Total climbing is roughly +330 m, with the toughest stretch being the early climb up Waterworks Valley after the start in St Helier. The reward is the run is mostly downhill and flat over the final miles along The Railway Walk back into town.

Is the Jersey Marathon a Boston qualifier?

Yes — the course is an officially measured marathon distance run under UK Athletics licensing, so a Boston-qualifying time run here is eligible. Note that the hills and exposed coastal wind make it a harder course to chase a fast time on than a flat road race, so plan your pacing for the elevation.

What is the time limit for the Jersey Marathon?

There is an official six-hour time limit for the full marathon. With a 09:00 start, that puts the course cut-off around 15:00. Six hours is comfortable for most marathoners, but plan a small buffer for the headwind on the exposed western stretches.

What is the weather like for the Jersey Marathon in October?

Expect mild but breezy conditions: early October on Jersey averages around 15°C / 59°F with humidity near 79% and coastal wind around 23 km/h. Showers are common this time of year. A light, packable wind layer is more useful than heavy warm kit.

Where does the Jersey Marathon start and finish?

Both the start and finish are at Weighbridge Place in St Helier, Jersey's capital. The course is a circular tour of the island heading west and north through St Ouen and St Brelade before returning to a flat finishing avenue in the town centre — handy for spectators and post-race logistics.

How many runners take part?

The full marathon is a small field — about 371 finishers in 2024. The wider race weekend draws far more (over 2,500 across the marathon, relay and Marathon Mile), but the standalone 42.195 km event is intimate, which suits runners who prefer space over big-city crowds.