The 4.5 boulder
- 5 routes
- V1 – V4-
- Bouldering
- Jun–Sep
- best months
The 4.5 boulder is a bouldering area on Bureau of Land Management land in Oregon, within the Nw Oregon Cascades Field Office. It sits among a cluster of climbing spots, with Redneck Rivierra just 0.2 miles away and Quartzville Scenic Byway about 1.7 miles off. The area is managed by the Bureau of Land Management. The climbing here is all bouldering, with five routes ranging from V1 to V4. Chicken Tendies is the easiest at V1, and Teenage libertarians is the hardest at V4. The routes are named with a mix of whimsy and practicality, including Falcon's reach and Step on my Beard. Summer is the most comfortable time to visit. Typical averages from the nearby Detroit Dam weather station show July and August highs around 80 to 81°F with only four or five wet days a month, while winter brings highs in the low 40s and rain on most days. Yellowbottom Recreation Site, about 2.1 miles away, offers camping, and Yellowstone Creek, about 1.7 miles away, is a canoeing option.
Best time to go · Jun–Sep
Best time to visit The 4.5 boulder
Best months: June–September. 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.
Jan
43° / 36°
20 wet · 2 snow
Feb
47° / 37°
18 wet · 1 snow
Mar
52° / 38°
21 wet · 1 snow
Apr
57° / 41°
20 wet
May
65° / 46°
16 wet
Jun
71° / 51°
11 wet
Jul
80° / 56°
5 wet
Aug
81° / 56°
4 wet
Sep
74° / 53°
8 wet
Oct
61° / 46°
14 wet
Nov
49° / 40°
19 wet
Dec
43° / 37°
21 wet · 1 snow
Typical high / low (°F) and days with rain or snow, 1991–2020. Measured at Detroit Dam, OR, 13.1 mi away at 1,220 ft. Source: NOAA NCEI U.S. Climate Normals 1991–2020.
Keep exploring — more climbs worth the drive
Photo: U.S. Forest Service- Pacific Northwest Region, Public domain (via Wikimedia Commons)Menagerie Wilderness
~19 min drive
Menagerie Wilderness in Oregon has 3 climbing routes with alpine no fixed protection.
Photo: Visitor7, CC BY-SA 3.0 (via Wikimedia Commons)Skinner Butte (aka The Columns)
~1h 24m drive
Skinner Butte (aka The Columns) in Oregon has 31 climbing routes.
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Redneck Rivierra
Next door
Redneck Rivierra is a 6-route climbing area in Oregon with bouldering pads.
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Quartzville Scenic Byway
~3 min drive
Quartzville Scenic Byway is a climbing area in Oregon with 2 routes.
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Lower Menagerie
~20 min drive
Lower Menagerie in Oregon has 5 routes with alpine no fixed protection.
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Garden Cliffs
~21 min drive
Garden Cliffs in Oregon has 49 climbing routes across 24 grades.
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Meth Lab Boulder
~21 min drive
Meth Lab Boulder in Oregon has 13 bouldering routes across 8 grades.
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Unknown Boulder
~21 min drive
5 bouldering routes in Oregon, grades span 4 difficulty levels.
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Azain Boulder
~21 min drive
Azain Boulder in Oregon has 16 climbing routes with 12 difficulty grades.
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Fight Club Boulder
~21 min drive
7 bouldering routes in Oregon spanning 6 grades.
