Castle Mountain is one of my favourite mountains in Banff National Park. It’s just so stately and majestic, my eyes are drawn to it any time I’m near. The Rockbound Lake hike is an excellent Banff hiking trail which takes you to two alpine lakes on the far side of Castle Mountain. The Rockbound Lake trail is enjoyable all hiking season long, but comes alive in September when the larch trees turn golden.
Rockbound Lake Hike – Quick Details
Trailhead: Rockbound Lake trailhead
Distance: 18 km out and back
Elevation: 934 m elevation gain
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Rockbound Lake Hike Highlights
The Rockbound Lake hiking trail begins in a lush evergreen forest, with a carpet of emerald green moss. The hiking trail is nice and wide, where two people can hike easily side-by-side, making it a good Banff hike with a group. The trail is well groomed as well, with hardly any rocks and roots to contend with.
After 400 m of hiking you’ll arrive at a trail junction. The trail for the short, but very enjoyable Silverton Falls hike goes to the right. If you have the time and energy after hiking to Rockbound Lake, we highly recommend adding on the short hike to Silverton Falls. For little extra effort, it’s a chance to see some of the nicest waterfalls in Banff.
Beyond the Silverton Falls trail junction, the Rockbound Lake trail starts uphill. The hiking trail snakes up the side of Castle Mountain, such that the trail is always on a side slope. I like hiking in side slope as you get nice vistas on the downward side, yet up close views of the forest floor on the uphill side.
At the 1.3 km mark of the Rockbound Lake hike, there’s a break in the trees, affording an excellent view of Copper Mountain (2,795 m). In late September you can see a stand of golden larch trees near her tree line.
400 m later, the alpine zone of Castle Mountain (2,766 m) makes her first appearance through the trees ahead. As mentioned, Castle Mountain is one of my favourite mountains in Banff National Park, so it’s always a thrill to see her dramatic vertical cliffs up close. As we stopped to enjoy the view, I could hear a busy woodpecker in the trees not far away.
After 2.7 km of hiking to Rockbound Lake, the hiking trail turns sharply towards the east. Although the forest is thick and remains mostly the same throughout this first section of the Rockbound Lake hike, I find it fun to focus on the small treasures in the forest. There’s many beautiful flowers, mushrooms, lichen etc. growing in the forest to enjoy.
The dense forest starts to open up a little bit at the 4 km mark of the Rockbound Lake hike. A few grey jays fly back and forth in between some pine trees, which start to appear along the trail.
Shortly after, the Rockbound Lake trail gets quite close to the eastern edge of the towering cliffs of Castle Mountain. Although you can’t really see the mountain through the trees, you’ll know you are close by the presence of giant boulders in the forest floor, which have fallen off the mountain over the millennia.
5.1 km into the Rockbound lake hike, the trail turns sharply to the left and begins marching straight towards the two Banff lakes at our destination – Tower Lake and Rockbound Lake.
As we begin this final stretch towards Rockbound Lake, it’s fun to watch ecosystem change as we enter the giant mountain amphitheater. The plants on the forest floor are different, with more shrubs, grasses and spindly plants than before.
The incredible views really start around the 5.5 km mark of the Rockbound Lake hike, when we get our first amazing view of the interior cliffs of Castle Mountain. In fall, the shrubs along the trail here are beautifully coloured.
Helene Ridge makes her first appearance through the trees on the right at the 5.7 km mark. We’re now truly entering this majestic mountain amphitheater in Banff National Park.
As you hike towards Tower Lake and Rockbound Lake, take a moment to appreciate all the hard work by the Parks Canada trails crew. There are flagstones and little wooden bridges over creeks and muddy parts – a significant amount of work to make your hike to Rockbound Lake more pleasant.
It was along this section of hiking trail that we got to witness a male Spruce Grouse perform a mating display for a seeming uninterested female nearby. It was like something out of a National Geographic documentary – amazing! We didn’t stay long as we didn’t want to kill the mood he was trying to create…
At 6.3 km of the Rockbound Lake hike, you’ll stand on a hill, where you can see 270° of mountains. You are almost surrounded by incredible Rocky Mountain scenery. All your hard work is starting to pay off. Castle Mountain really starts to become impressive along this stretch. Her black and copper coloured cliff walls shoot straight up in the air.
There’s a small spur trail at the 6.5 km mark where you can go see Silverton Creek, which is flowing way down in a valley below. It’s at this stage that the first larch tree appears next to the trail.
You’ll enter a large meadow at the 7 km mark of the Rockbound Lake trail. As you stand in the shadow of a massive cliff from Castle Mountain, you’ll notice that the number of larch trees is also starting to grow. (Larches aren’t just beautiful in fall – I really like their fluffy lime green needles in the summer too).
The open meadow filled with larch trees continues for several hundred meters. At the 8 km mark of the Rockbound Lake hike, Tower Lake comes into view.
We hiked to Tower Lake on a dreary day in mid-September and it was still a stunning sight. Sitting at the base of a towering Castle Mountain cliff, rocks from alluvial fans flow into the lake, while golden larches sit along the lakeshore.
As you hike along the shores of Tower Lake towards Rockbound Lake, you’ll notice that Helena Ridge is suddenly a lot taller, rockier and dramatic too.
The trail between Tower Lake and Rockbound Lake can be very steep, but it’s quite short. There’s a short break in the trees, due to a rockslide, which opens up incredible views of Tower Lake, Castle Mountain and countless peaks of the Canadian Rockies down the Bow Valley towards the Town of Banff.
When the steep trail from Tower Lake ends, you’ll see multiple hiking trails in many directions. Note that most of them have a fallen tree over them, signifying that they are closed. Take the unblocked trail to the right to continue hiking on to Rockbound Lake.
It doesn’t take long to emerge from the large stand of larch trees. When you do, prepare to be floored by some incredible Banff National Park scenery. The beautiful Rockbound Lake sits at the bottom of a massive amphitheater, with towering mountains hugging her on all sides.
If you are lucky enough to hike to Rockbound Lake in larch season, the fall colors of the golden larch trees just makes Rockbound Lake that much more special.
There’s a big meadow around Rockbound Lake, affording hikers amazing views all around. If you keep walking away from Castle Mountain, the hiking trail will reappear. If you have the energy, you can follow this trail up to a Rockbound Lake Viewpoint. The Rockbound viewpoint trail isn’t very long (~ 300-400 m), but it’s very, very steep gaining 100 m of elevation.
The views from the Rockbound Lake viewpoint are very impressive, but we don’t recommend you hike up to it unless you are a strong mountain hiker with experience hiking on loose scree.
As you can imagine, the views from the Rockbound Lake viewpoint are incredible. You can see both Rockbound Lake and Tower Lake, along with an amazing vista of the full length of Castle Mountain – it was just as impressive as I’d hoped. The views of the Canadian Rockies don’t end at Castle Mountain – they continue down the Bow Valley for miles. Pilot Mountain (2,935 m) is especially impressive, with its pyramid peak next to castle mountain.
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We like the Rockbound Lake Trail so much, we included it in our 7 Day Banff Itinerary for Hikers.
Rockbound Lake Trailhead
The Lake Louise parking lot is 25 minutes from Banff and 1 hour 45 minutes from downtown Calgary. Take the TransCanada Highway 1 west, then exit onto the Bow Valley Parkway just past the Town of Banff turnoff. You’ll pass the very popular Johnston Canyon hike along the way.
The small Rockbound Lake parking lot will fill up fast in the summer. If you are visiting Banff National Park in the summer, we recommend that you arrive before 9 am even on a weekday.
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The Bow Valley Parkway is one of the most scenic drives in Banff National Park. It’s also a vital wildlife corridor, so it is subject to many closures. Learn more in our post all about the Bow Valley Parkway.
Recommended App
This GPS activated Canadian Rockies Audio Driving Tour is the perfect companion to your Banff vacation. It’s both entertaining and educational and will greatly enhance any drive in Banff National Park.
Rockbound Lake Hike Stats
How Long is the Rockbound Lake Hike?
The round-trip distance of the Rockbound Lake trail is 18 km (one-way distance of 9 km) from the parking lot just off the Bow Valley Parkway.
It’s about 0.5 km less if you skip the steep hike up to the Rockbound Lake viewpoint at the end of the hike.
How Hard is the Hike to Rockbound Lake?
Due to the length and elevation gain, we rate the Rockbound Lake hike as “challenging”.
With a round-trip distance of 18 km and 934 m of elevation gain, not every hiker will be able to manage the Rockbound Lake hike.
It is a pretty consistent 10% grade on the way up, but if you are experienced enough to handle a difficult Banff hike like this, you probably won’t mind the uphill.
How Long Does the Rockbound Lake Hike Take?
It should take a typical adult 5-7 hours to hike to Rockbound Lake. We did this hike without our kids and it took us just under 5 hours including time at Tower Lake, Rockbound Lake, the viewpoint and stopping for pictures along the way.
Rockbound Lake Trail Map
The Rockbound Lake hike is easy to follow and is well marked. If you are feeling uncertain, you can use Rockbound Lake trail map on the Alltrails app, but the trail is well marked and popular enough that you’ll have plenty of people to follow.
A recent App of the Year winner, AllTrails is also one of the best apps for visiting Banff! Enjoy map downloads and many more premium features with a 7-day free trial of AllTrails+!
Where to Stop for Lunch or a Break
The best place to stop for lunch on this hike is along the shores of Rockbound Lake. There’s lot of flat rocks to sit on next to the lake where you can enjoy the amazing views you’ve earned.
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Rockbound Lake Hiking Safety
There are relatively few hiking hazards along the Rockbound Lake hiking trail. The trail is reasonably well maintained and easy to follow up all the way to the end.
Wildlife Safety
When hiking in Banff National Park, you are responsible for your own safety. Before hitting the hiking trails we highly recommend you read our Essential Banff Hiking Tips for information about bear safety, trail conditions, wildlife warnings and possible closures.
Rockbound Lake Trail Logistics
On-leash dogs are allowed on the Rockbound Lake hiking trail, but mountain bikes are not. There are toilets in the Rockbound Lake parking lot, but none on the hiking trail.
You won’t get cell service for the entirety of your hike, so don’t count on it for your safety.
What to Bring for Hiking to Rockbound Lake
This is a longer Banff hike so you should be prepared with layers and proper hiking gear. Check out our list of Banff hiking essentials with the hiking gear and clothing we recommend to get the most enjoyment out of your hike, regardless of the variable mountain weather and trail conditions.
A wonderful hike up the lower slopes of Castle Mountain to a natural amphitheater with two alpine lakes.
Dan Brewer, a life-long Alberta resident, calls Canmore home along with his wife and two kids. He is the co-owner of Travel Banff Canada, where he gets to share his passion for the Canadian Rocky Mountains. Dan, along with his family, love being outdoors doing one of the many activities they enjoy in the mountains: hiking, mountain biking, paddleboarding, skiing, snowshoeing and cross-country skiing.
When he's not in Canmore enjoying one of his favourite local hikes, you can find him hoping on a plane to explore a new country with his family or working on one of their other two travel sites: Family Can Travel and Baby Can Travel.