Established highlines at Smith are a bit elusive. HERE's the latest info on currently bolted ones for you.
Things change quickly, so if you don't see what you're looking for or need more info reach out to the local slackline community on Central Oregon Slackline.
In the meantime, here are the ones we know of:
(please be sure to check on all seasonal closures due to raptor nesting)
Walking with Woodstock- 140' CLOSED
The Awl- 50' (very off-level)
4th Horseman Ridge:
Peekaboo Jefferson- 130' (very windy)
The Flying Zafu- 114'
Tears of Dust- 120' CLOSED (extreme rockfall hazard over popular climbs)
Windy Daze- 115' (very windy)
Jedi Crimbo Training Line- 81'
Aggro Gully Line- 156'
Blue Dream- 207' (Cocaine Gully)
Cold Turkey- 160' (Cocaine Gully)
Earn Your Stripes- 40'
Little Cocaine Gully- 73'
Lower Gorge Rim:
GYEO- 262' CLOSED
Advanced Meditation- 80' (top of Brogan Spire)
Advanced Retardation- 525'
Monkey Face Area:
Classic Monkey- 30' (first highline at Smith Rock)
Long Monkey- 123'
Monkey Boy- 230'
Grant's Line- 80'
Jason's 220- 220' (top of Staender Ridge)
New Beginnings- 120' (top of the Dinosaur)
Temple of the Wind- 230' (top of the Monument)
Picnic Lunch Wall:
Brian's River Midline- 200' CLOSED
Fight or Flight- 102'
Phoenix Midline- 150' CLOSED
Free Your Mind- 91'
Race Condition- 98'
Wizard's Cap- 34'
Where Swallows Fly- 126'
Smith Rock Group:
King Line- 200'
Machiavelli's Throne- n/a
The Bishop- 236'
The Gift- 70'
The King's Mistress- 170'