Ásbyrgi canyon walks in Jökulsárgljúfur

Ásbyrgi is the horseshoe-shaped canyon at the northern end of Jökulsárgljúfur, the canyon section of Vatnajökull National Park, and walking in it is free. The floor is birch wood and a pond; the walls are basalt. It suits anyone on the Diamond Circle between Dettifoss and Húsavík, families who want a flat half-hour, and walkers who want two hours on the cliff top. Winter is possible, with fewer services and slippery paths.

The figures, read today on the national park's pages: Botnstjörn (Á1) is 1 km and about 30 minutes, marked suitable for limited mobility. Eyjan (Á2), the rock island in the middle of the canyon, is 4.5 km and 1.5–2 hours, rated easy, with a warning about high cliffs. Skógarstígur (Á3) is 4 km and 1–2 hours; Underneath Eyjan (Á4) 3.5 km and 1–1.5 hours; the Áshöfði loops (Á5, Á6) 7–7.5 km and 2–3 hours, rated challenging. Gljúfrastofa, the visitor centre at the canyon mouth, has an exhibition, an information desk and toilets that open only with the centre. Its own page gives 11:00–15:00 Monday to Friday from 1 November to 20 December, 11:00–15:00 on weekdays from 2 January to 30 April, and daily hours from May; the park's area notice, read the same day, says 10:00–15:00 on weekdays from 1 November. Phone the centre on +354 470 7100 if the hour matters. The park's price list names parking fees only at Skaftafell and Jökulsárlón, and nothing for Jökulsárgljúfur. The campsite runs from mid-May to the end of October at 2,800 ISK per adult per night.

#The arithmetic

Ásbyrgi is already a stop on day 3 of the five-day North and Diamond Circle journey and on day 6 of the ten-day Ring Road. On those days the Eyjan walk costs 120 minutes on the trail plus 15 at Gljúfrastofa: 135 minutes, against 45 for the Botnstjörn loop and a look in the centre. From a Húsavík bed as a separate outing, it is 63 km and 55 minutes each way by OSRM on OpenStreetMap; with 120 minutes walking, 15 at the centre and a 30-minute buffer, that is about 275 minutes. From Reykjahlíð the drive is 82 km and 70 minutes each way, so about 305.

#What goes wrong

Roads: the park describes road 862 as paved with limited winter service, and its winter page says paths may be slippery and sends drivers to vegagerdin.is for roads and vedur.is for weather before setting out; route 85 from Húsavík is the year-round approach. Daylight: in November and December the walking window is short, and Gljúfrastofa shuts at 15:00 and at weekends. Cliffs: the Eyjan path runs along an edge of up to about 100 m; the park asks for caution, and safetravel.is advises taking a hat, gloves and windproof layers even on a short trip.

#Alternatives on the same road

Upstream on road 862, the Dettifoss to Selfoss loop is 2.5 km. In Húsavík, whale watching and the GeoSea baths fill the other half of the day.