Idaho · Rock climbing · Boise

Valley of the Trolls

14 climbing routes in Idaho spanning 9 difficulty grades.

14 routes
V0 – V6
Bouldering

Best time to visit Valley of the Trolls

Best months: April–June and September–October. Best months have typical highs of 55–85 °F, lows of 30 °F or warmer (32 °F where the station doesn't record snow), at most one snowy day and no more than 12 wet days.

  1. Jan

    39° / 26°

    11 wet · 5 snow

  2. Feb

    46° / 29°

    9 wet · 3 snow

  3. Mar

    55° / 35°

    10 wet · 2 snow

  4. Apr

    62° / 40°

    9 wet

  5. May

    72° / 48°

    8 wet

  6. Jun

    81° / 54°

    5 wet

  7. Jul

    93° / 62°

    3 wet

  8. Aug

    91° / 61°

    2 wet

  9. Sep

    80° / 53°

    4 wet

  10. Oct

    65° / 42°

    6 wet

  11. Nov

    49° / 32°

    10 wet · 2 snow

  12. Dec

    39° / 25°

    12 wet · 5 snow

Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Boise Air Terminal, ID, 4.5 mi away at 2,814 ft. Source: NOAA NCEI U.S. Climate Normals 1991–2020.

Valley of the Trolls is a bouldering area in Idaho, set within Mesa Reserve on city land. It sits among a cluster of climbing and mountain biking spots, with several other climbing areas and a mountain biking line just steps away. The area is a bouldering destination, with 14 routes all rated on the V scale from V0 to V6. The easiest is Warm-up Problem at V0, and the hardest is Erectile Dysfunction at V6. The routes are all boulders, and the area works well for a short session of climbing on a single day. Spring and fall are the most comfortable times to visit. Typical averages from the nearby Boise Air Terminal weather station show May highs around 72°F and September highs around 80°F, while July and August average in the low 90s. The closest neighbors are the #16B Rock Island mountain biking lines, about 0.1 to 0.2 miles away, and the Blasted Wall and Bob's Nose climbing areas, each about half a mile off. For fishing, the Boise River is roughly 1.7 miles away.

Routes (14)

Keep exploring — more climbs worth the drive

Bob's NosePhoto: Matt Lavin, CC BY-SA 2.0 (via Flickr)

Bob's Nose

~1 min drive

Bob's Nose in Idaho has 5 bouldering routes across 4 difficulty grades.

Table RockPhoto: Matt Lavin, CC BY-SA 2.0 (via Flickr)

Table Rock

~1 min drive

Table Rock in Idaho has 18 climbing routes with 16 difficulty grades, offering bouldering, mixed, and sport styles.

The FortressPhoto: Matt Lavin, CC BY-SA 2.0 (via Flickr)

The Fortress

~1 min drive

The Fortress is a climbing area in Idaho with 9 routes.

Green AcresPhoto: cifraser1, CC BY 2.0 (via Flickr)

Green Acres

~8 min drive

Green Acres in Idaho has 10 climbing routes across 6 grades, offering sport and trad options.

Populace WallPhoto: cifraser1, CC BY 2.0 (via Flickr)

Populace Wall

~9 min drive

Populace Wall in Idaho has 13 climbing routes across 6 grades in mixed, sport, and trad styles.

Scary CanyonPhoto: cifraser1, CC BY 2.0 (via Flickr)

Scary Canyon

~10 min drive

Scary Canyon in Idaho has 10 sport climbing routes across 6 grades.

Swan FallsPhoto: cifraser1, CC BY 2.0 (via Flickr)

Swan Falls

~45 min drive

Swan Falls is a bouldering crag in Idaho with 16 routes.

Blasted Wall

~1 min drive

Blasted Wall in Idaho has 11 bouldering routes across 5 difficulty grades.

Big Times Area

~1 min drive

Big Times Area in Idaho has 7 climbing routes on 6 difficulty grades.

Propeller Area

~1 min drive

Propeller Area in Idaho has 9 climbing routes with bouldering pads, mixed, and sport styles.