Hint

Intro

The focus of this hike is “Kilometre Zero“, the beginning of the World War I battlefront which extended from the Swiss border to the North Sea. In the forest, you can find the remainders of barriers, look-out posts and bunkers. The path crosses and re-crosses the border several times.

Description

Bonfol is located on the outer edge of the Ajoie region on the French border. It is known primarily for its traditional pottery craft. The reddish clay here, for example, was perfect for making fondue pots. Car designer and car racer Louis Chevrolet was a prominent resident of the small village. The area is not particularly known as a hiking destination, but the “Kilometre Zero” educational path with a number of information boards offers fascinating insights into the history of this nearly forgotten border region. “Kilometre Zero” is where the battlefront begins. It extended from the Swiss border to the North Sea.

The trail starts at the Bonfol train station. After the village it enters the majestic forests of the Ajoie region to the north. The so-called Largzipfel, a piece of land that juts out to the Larg river in the Alsace, is located at the edge of the forest. This is where Swiss, German and French soldiers were facing each other for four years during World War I. It is also where boundary stone 111 is found, the official “Kilometre Zero” of the western front. An explanation of its history is provided at the stations of an educational trail. First we cross the Larg, and thus the French border, on a wooden bridge. Other remainders of the three fronts are found along the river, such as machine gun positions, a concrete shelter, a casemate from the infantry and deteriorated barriers. The path is quite swampy here.

Just after a swimming pond a signpost points to Villa Agathe. The first French shelter on the western front contains a room with a gap in the roof where rifle grenades where launched. Later we come to an intact railway bridge near Pfetterhouse, and then the path takes a long left turn and follows the railway line. Parts of a destroyed railway bridge are found about half way, before the trail returns to Swiss territory. It passes a protected pond area in the forest at the edge of Bonfol. A dam separates the two main ponds “Etang du Mileu” and “Le Neuf Etang”. The popular recreational area is perfect for a break before returning to Bonfol.

An enjoyable tour includes the careful planning of the same. Please inform yourself in advance at the local information center about the route and weather conditions. Depending on the season and weather conditions, this route may be blocked or interrupted

Technical information

Show Technical information content
Start location
Bonfol
Destination
Bonfol
Direction
Round trip
Ascent
280 m
Descent
280 m
Distance
18 km
Duration
4 h 20 min
Duration back
4 h 20 min
Technical requirements
Easy
Physical requirements
Medium
Theme
With panoramic view
Signalization
Signalisation in both directions

Map

SwitzerlandMobility Map: This element is not accessible for disabled people.

Contact

Jura Tourisme
Rue du 23-Juin 20
2900  Porrentruy

Phone  +41 (0)32 432 41 80
info@juratourisme.ch
juratourisme.ch

Quick Facts

Route number

No. 456

Distance

18 km

Duration

4 h 20 min

Ascent

280 m

Travel information: Bonfol

Current Offers

  • Porrentruy Circuit Secret of Porrentruy

    The Circuit Secret is a fun and original way of discovering Porrentruy. At a series of... from CHF 11
    Offer details


    valid: 17.12.2025 - 27.03.2026

    Learn more about Circuit Secret of Porrentruy
  • Asuel Archery range

    Equipment (bow, quiver, arrows) and initiation before the course. from CHF 20
    Offer details


    valid: 19.12.2025 - 28.12.2025

    Learn more about Archery range
  • Saint-Ursanne Escape room Klondike saloon

    Dawson City's central bank was the scene of an armed robbery the day before yesterday. According... from CHF 140
    Offer details


    valid: 24.12.2025 - 04.01.2026

    Learn more about Escape room Klondike saloon
  • Saint-Ursanne Escape room Da Vinci

    Enter the world of Leonardo da Vinci, the famous Italian painter.In teams of 2 to 5 people, try to... from CHF 120
    Offer details


    valid: 22.12.2025 - 04.01.2026

    Learn more about Escape room Da Vinci
  • Saint-Ursanne E-VTT rental

    Rent a mountain bike and discover the region over several kilometres with minimum effort. Alone or... from CHF 45
    Offer details


    valid: 17.12.2025 - 28.12.2025

    Learn more about E-VTT rental
  • Saint-Ursanne E-scooter rental

    E-scooter hire from CHF 20
    Offer details


    valid: 17.12.2025 - 28.12.2025

    Learn more about E-scooter rental
  • Saint-Ursanne Outdoor Escape Game: The Canon’s Secret

    A backpack, full of objects, was found in the vicinity of St. Ursanne. The explorer to whom this... from CHF 60
    Offer details


    valid: 17.12.2025 - 31.12.2025

    Learn more about Outdoor Escape Game: The Canon’s Secret
  • Saint-Ursanne Circuit Secret Saint Ursanne

    The secret tour takes you through the city of St. Ursanne. You have a digital key with you and... from CHF 12
    Offer details


    valid: 30.03.2026 - 31.05.2026

    Learn more about Circuit Secret Saint Ursanne
  • Saint-Ursanne Circuit Secret of St-Ursanne

    The St Ursanne Circuit secret was devised by John Howe, famous illustrator of The Lord of the Rings... from CHF 11
    Offer details


    valid: 30.03.2026 - 31.05.2026

    Learn more about Circuit Secret of St-Ursanne