Lake Annecy Marathon 2027: your 12-week plan for April, ready on Garmin as soon as the date is out
The next edition is expected in April 2027; the organizer hasn't published the date yet. In 2026, the marathon was run on Sunday, April 19. For a mid- or late-April race, the 12-week plan starts on a Monday in late January or early February. As soon as the date is known, Running Workout sets the plan to it in two minutes; then your AI assistant (Claude, ChatGPT…) sends each week's workouts to your watch.
Last updated: October 27, 2026
Brooks Lake Annecy Marathon
April 2027, date to be confirmed
- Distance
- 26.2 mi
- Course
- Lake and mountains, FFA-certified
- Entry
- Opening to be announced
Free to start · official Garmin connection
Try it now
Ask your assistant
Once your Garmin is connected, paste one of these into Claude or ChatGPT:
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« Build my 12-week plan for the Lake Annecy Marathon in April 2027, with 4 sessions a week; I'll give you the official date as soon as it's out. »
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« Send a workout to my watch for Saturday: 2 × 5 miles at marathon pace, 3 minutes recovery. »
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« Ski week in February, I barely ran: review the week and adjust my plan for Annecy. »
Free to start · 4 workouts a month sent to your watch
Between lake and mountains, starting from Le Pâquier
According to the official website (2025 edition), the marathon starts from Le Pâquier, the lakeside space described as the green lung of Annecy, and follows a 26.2-mile course measured and certified by the French Athletics Federation, on roads, cycle paths and pedestrian routes. It passes Parc Charles-Bosson and the Marais de l'Enfer wetlands, among other spots. The marathon has been held since 1980 and is organized by the Annecy Haute-Savoie Athlétisme club.
The 2027 course hasn't been published yet: the organizer's website is being rebuilt. Check it as soon as it's back online before setting your paces; in the meantime, training for a spring marathon stays the same.
Three workouts that prepare this marathon
A lakeside marathon is mostly about steady pacing and endurance. Here are three workouts from the Running Workout marathon plan that your AI assistant can build at your paces and send to your watch:
- Marathon pace: 2 × 5 miles, 3 minutes recovery, to hold goal pace without checking it every mile.
- A 2.5-hour long run with the last 45 minutes at marathon pace, in the peak week, three weeks before the race.
- Threshold: 3 × 8 minutes, 2 minutes recovery, so marathon pace feels easier on race day.
Training through late winter
An April race means the 12 weeks start in late January or early February, in the middle of winter. Long runs happen in the cold, and a ski week often lands right in the middle of training.
A ski week or a missed week? Your assistant reviews it on Garmin Connect: sessions done, sessions missed, training load. Following the plan's rules, it repeats the week or moves on, then sends the next one to your watch. And if the official date differs from the one you entered, it shifts the whole calendar to the new date, as long as it still leaves room for the plan's 12 weeks.
Frequently asked questions
When is the 2027 Lake Annecy Marathon?
The 2027 date hasn't been published yet: the organizer's website isn't back online. The 2026 edition took place on the weekend of April 18-19, with the marathon on Sunday at 8 a.m.; the 2025 edition was on Sunday, April 27.
When does registration open?
It hasn't been announced. You can start training before then: enter an estimated date, then ask your assistant to shift the plan to the official date once it's published.
Annecy or Paris for a spring marathon?
Both are trained for over the winter with the same 12-week plan. Paris is announced for Sunday, April 4, 2027; Annecy, expected later in April, gives you one or more extra weeks if you start late.
Is Running Workout free?
Free to start: Garmin connection, plans, reading your activities and 4 workouts a month sent to your watch. Running Workout Pro (€4.90 a month or €35 a year, no commitment) removes the limit.
Brooks Lake Annecy Marathon
Ready to prepare for your marathon?
The plan is set to that date; your assistant does the rest, week after week.