Do I have to do the full loop (and wade the upper river)?

No. You can hike up the east side—which offers the clearest views of the waterfall—and simply turn back at the top. This avoids the barefoot river crossing, but requires descending the steep rope sections.

Is the log bridge always there?

No. The log bridge is temporary and usually installed in early June and removed in late September. It is strongly advised to check local reports (Safetravel.is) if visiting in the shoulder seasons.

Can I skip the river crossing?

If the log is missing or you wish to avoid it, you can hike up the western side of the canyon out-and-back. Note that the views of the waterfall from the western side are more obscured by the canyon walls than from the eastern side.

Is it suitable for children?

Due to the steep cliffs, rope sections, and the technical nature of the log crossing, the full loop is generally recommended only for older children with hiking experience and no fear of heights.

HikeMetrics

Global Hiking Index

HikeMetrics.com

GlymurWaterfall

DATA_INDEXED_2026

Distance

7KM

Gain

0.4kM

Duration

1d

Strain

LVL 3

AI Insight: Optimal ratio of distance to elevation. Accessible for experienced intermediates.

Canyon adventure near Reykjavík. Glymur was long regarded as Iceland’s tallest waterfall (198m / 650ft) until the glacial retreat revealed Morsárfoss in 2007. Regardless, it remains one of the most scenic and technically engaging day hikes just an hour's drive from the capital. Tucked into the back of Hvalfjörður (Whale Fjord), the 7km loop hike offers a genuine sense of adventure. The route involves crossing the Botnsá river via a suspended log, navigating a natural stone cave, and ascending steep, often muddy canyon rims equipped with fixed rope handholds for stability. The reward is an aerial view into a moss-covered chasm where the massive falls plunge through a narrow slit in the volcanic rock.

Mission Directive / X-Factor

“The River Crossings and The Cave. The 'X-Factor' here is the sheer interactive adventure of the trail. Unlike many Icelandic waterfalls where you park and walk 50 meters on pavement, Glymur makes you work for it. You have to thread through a dark stone archway (cave), cross a rushing river on a slippery log, climb up ropes, and then, if doing the full loop, strip off your boots and wade through the freezing river above the roaring falls to get back down the other side.”

Hazard Assessment

steep muddy cliffsPRIORITY 1

The trail on the east side of the canyon skirts extremely close to the vertical drop. The dirt is often slick with rain and loose gravel.

MITIGATION: Hold the installed ropes on the steepest sections. Do not hike the east side if you suffer from vertigo.

the log crossingPRIORITY 1

The first river crossing requires balancing on a single log suspended over fast, freezing water while holding a wire.

MITIGATION: Unbuckle your backpack chest and waist straps before crossing (so you can ditch the bag if you fall into the river).

Critical Loadout

Waterproof hiking boots with aggressive grip

Water shoes/sandals and a small towel (vital for the barefoot river wade at the top)

Waterproof jacket

A sense of balance

Target Base Weight

< 10 KGEXCL. CONSUMABLES

Water Logistics

SOURCE AVAILABILITYHIGH / FREQUENT

FILTRATION PROTOCOLMANDATORY (<2000M)

HIKING
PATHWAY

Hvalfjörður (West Iceland) // hiking

Start

Cave and Log Bridge

A flat walk through scrubland, passing through a stone cave, and arriving at the Botnsá river to execute the infamous log-bridge crossing.

Phase 1

The Rope Climb

A very steep, muddy, pant-inducing climb up the east side of the canyon, using the installed ropes for leverage, constantly peeking over the edge at the falls.

Finish

Top Crossing and Descent

Reaching the plateau above the waterfall, taking off boots to wade across the freezing, wide river, and hiking the more gradual, less-dramatic western side back to the car.

Topographical Ref / Area HVALFAUTO-GEN SYNC: 64.3916N -21.2505E

Mission Log: Stage-by-Stage Technical MetricsREF: GLYMUR-WATERFALL // DAT_TAB_01

Step	Sector / Waypoint	Dist.	Gain (↑m)	Duration	Assessment
1	Cave and Log Bridge A flat walk through scrubland, passing t...	45 min	---	45 min	Standard Segment
2	The Rope Climb A very steep, muddy, pant-inducing climb...	1 hour	---	1 hour	Standard Segment
3	Top Crossing and Descent Reaching the plateau above the waterfall...	1.5 hours	---	1.5 hours	Standard Segment

Technical Specifications

DOC_REF: GOLDEN_HIKING_IS_002

01 / LOG

Refuge Capacity

Predominantly a day-trip destination from Reykjavík or nearby Akranes. Local guesthouses are available in the Hvalfjörður region.

02 / REG

Regulatory

Permit NONE
Authority Local Landowners

No permits. Please respect the roped off areas near the cliff edges.

03 / CLI

Climatology

OptimalJun, Jul, Aug, Sep

The primary hiking window is June through September. Authorities remove the log bridge across the Botnsá river in the autumn to prevent damage from winter ice and runoff; without it, the lower river crossing is dangerous. Snow and ice make the canyon rim paths extremely hazardous in winter.

04 / COM

Emergency / Comms

Rescue (EU) 112 ACTIVE
Signal Partial

SAT-LINK STABLE

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