Jersey Half Marathon: Course, Elevation & Route Profile
The Jersey Half Marathon has been run in the west of the Channel Island since 1989 and reaches its 39th edition in 2027. The loop drops from the high ground at Les Quennevais to the coast of St Ouen and climbs back up again, and that return climb is what shapes the race.
Course & Elevation
Start and finish are on the cycle track at Les Quennevais Sports Centre in St Brelade, and the gun goes early, at 08:00. The first three kilometres stay on the high ground at around 75 metres, then the course falls almost to sea level by 6 km. A section through the lanes of St Ouen with a short rise around 8 km follows, before the second half runs largely flat along the coast back south. From about 17 km it climbs roughly 60 metres in one go, with a short pitch around 15 percent, and the last two kilometres cross the high ground back to the finish.
Roads are not closed: you keep left, Honorary Police and marshals manage traffic, and walkers and cyclists have right of way. Water is at the start, at 3, 6.5, 9 and 11 miles and at the finish, in cups only. There is no strict cut-off, but the organiser expects finishers within three and a half hours.
Pacing Strategy
The first half is deceptive: after the drop to the coast everything feels easy, and going faster than target pace here costs you twice at the end. Run the descent relaxed and use the flat coastal stretch to settle into an even rhythm rather than banking time.
The race is decided from 17 km. The climb back to the high ground arrives with 17 kilometres already in your legs; pace it by effort and let the watch slow down clearly. At the top there are nearly two flat kilometres where a climb run under control turns into places. If there is a headwind on the coast, it pays to run in a group.
Training plan for Jersey Half Marathon: 12-week build
For most age-group runners the Jersey Half Marathon means one and a half to two and a half hours of steady work at half-marathon effort, mostly on flat to rolling road. What sets it apart is a single serious climb shortly before the finish.
Build long runs of 90 to 120 minutes that include a hill in the final quarter, and practise running it at half-marathon rhythm by effort. Short hill repeats of one to three minutes once a week give your legs the strength for the steep pitch around 18 km.
The race starts at 08:00 in June. Rehearse getting up early, eating and running in the morning a few times beforehand. The coast can be windy and the stations hand out cups only, so it is also worth training with a small bottle of your own or practising drinking from cups on the move.
Course Map
Profile Parameters
Slope Distribution
Climbs on Route
| Start (km) | Length | Ø Gradient | Max Gradient | Elev Gain | Category |
|---|---|---|---|---|---|
| KM 8.0 | 0.3 km | 5.2% | 6.6% | +17m | — |
| KM 17.4 | 0.6 km | 6.2% | 15.6% | +39m | — |
Climb categories follow the road-cycling convention and rate the terrain itself (length and gradient) regardless of sport: Cat. 4 marks the easiest rated climbs, Cat. 1 the hardest, and HC (hors catégorie, “beyond categorization”) is reserved for the most brutal ascents. Short climbs below the Cat. 4 threshold stay unrated.
Course as GPX
Download the Half Marathon course as a GPX file for your watch or bike computer.
Adaptive race preparation
Let YOUB adapt your plan for Jersey Half Marathon dynamically
Ben connects your goal, the course, current load, recovery, and calendar. Your plan stays pointed at race day even when real life is not perfectly plannable.
Frequently asked questions
How long is Jersey Half Marathon?
Jersey Half Marathon is 21.1 km long. That distance shapes how much aerobic endurance, pace durability, and race-specific work belong in the training plan.
How much elevation gain does Jersey Half Marathon have?
Jersey Half Marathon has around 207 m of elevation gain over 21.1 km. That affects pacing, muscular load, and preparation for late-race sections.
What is the route profile of Jersey Half Marathon?
Jersey Half Marathon is classified as Rolling, averaging 9.8 vertical metres per kilometre. 41% of the route is flat, 31% climbs moderately (2 to 6%) and 1% is steeper than 6%.
What climbs does Jersey Half Marathon have?
The hardest climb of Jersey Half Marathon starts at kilometre 17.4, runs for 0.6 km at an average of 6.2% and gains 39 metres. 2 climbs are mapped in total.
Is Jersey Half Marathon a loop course?
Yes, Jersey Half Marathon is laid out as a loop: start and finish are in the same place.
Is there a GPX file for the Jersey Half Marathon course?
Yes. The Jersey Half Marathon course is on this page as a free GPX download — ready to import into Garmin, Wahoo, Komoot, Strava or any other app that reads GPX.
How should I prepare for Jersey Half Marathon?
Preparation for Jersey Half Marathon should account for 21.1 km, 207 m of elevation gain, current training load, and available training time. An adaptive plan helps place key sessions without ignoring recovery and real life.
What pacing strategy works for Jersey Half Marathon?
The pacing strategy for Jersey Half Marathon should reflect 21.1 km, 207 m of elevation gain, and your current fitness. Start controlled and keep margin for sections where the profile or fatigue makes target pace harder.
When does Jersey Half Marathon 2027 take place?
Jersey Half Marathon 2027 takes place on June 13, 2027.
Where does Jersey Half Marathon 2027 take place?
Jersey Half Marathon 2027 takes place in St Brelade, United Kingdom.
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