Gem Trail Review: Steepest Sustained Tech in 50 Year Network

Expert Descent with Big Bonus Lines

Every trail in the 50 Year / Golder Ranch network earns its reputation. The Gem Trail earns its in under a mile. The steepest sustained tech descent in the system, it drops over nearly 400 feet of granite rolls between Upper 50 Year and The Chutes — including an alternate line called Gem Slabs that ups the ante considerably.

Short enough to session, technical enough to demand respect every time. It’s a, wait for it… Gem.

Mountain biker dropping off granite rock feature beneath saguaro cactus on Gem Trail, Golder Ranch, Tucson Arizona — Saguaro witness. Gem Trail puts classic Sonoran Desert scenery directly in the consequence zone.

Stats (Gem Trail)

Distance: 0.88 miles
Elevation Gain (east to west): nominal
Elevation Loss: ~400 ft
Difficulty: Expert (main line), Expert+ (Gem Slabs alternate)
Surface: Granite, steep rock rolls
Connects: Upper 50 Year Trail → The Chutes Trail
Bail-out: Midway south to Upper 50 Year climb (not on map)
Trailhead: Golder Ranch (via network)
E-bike legal

Map of Gem trail in the 50 Year Golder Ranch network Tucson Arizona — Gem Trail drops fast off Upper 50 Year toward The Chutes. The red-rated Gem Slabs alternate is visible mid-trail — adds bigger, steeper, and significantly more committing features than the main black line.

The Trail

Gem Trail is the steepest sustained tech descent in the 50 Year network. It branches west off Upper 50 Year—before the rollover gate into the National Forest—and drops fast toward The Chutes.

About halfway down there’s a bail-out south that reconnects to the Upper 50 Year climb, if you want to run the top section (where the big features live) repeatedly or head up higher into the hills.

The features on Gem are all rock rolls, but the scale and steepness put this into black-rated territory. The gnarliest moves live on the red alternate line called Gem Slabs—big, steep, committing stuff that demands both skill and nerve. The main line stays black-rated and is standard business for most advanced riders, though it’s not exactly a cruise.

The trail is a hoot once you start putting it together—fast, tight, and unrelenting. A couple flat sections break it up; there are no real climbs.

Note 1: The spice on Gem Slabs (red) is real. Errors probably have consequences. But rest assured, riders are sending these features every day (after they’ve had a good look and know the lines).

Worth Riding?

Gem works when you want a short, steep climb paired with a short, steep descent. More intense and technical than Middlegate, but not as committing as Upper 50 Year or the trails higher up in the network.

Skip Gem if your technical chops aren’t dialed yet. The progression makes sense: once 50 Year Trail, The Chutes, and Middlegate flow without thought, Gem is the next step. For bigger rides and higher fitness objectives, Gem also serves as a solid warm-up before heading deeper into the system.

Silhouette of mountain bike front tire and saguaro cactus at sunset midway down Gem Trail, Golder Ranch, Tucson Arizona — Halfway down Gem. The desert doesn’t care what line you took to get here.

The best way to meet the big features that hide out around the Gem Trail (Gem Slabs) is with riders who know the lines. It’s faster, more fun, and saves you from hunting down alternates that aren’t obvious on first pass. For first-timers: the main line is plenty of fun initially.

Route

Most riders climb the start of Upper 50 Year, then descend Gem to The Chutes. If you’re continuing higher in the 50 Year network, one option to keep things shorter overall is to bail out midway on Gem (after the biggest features) and rejoin the Upper 50 climb.

Or just keep rolling downhill, and treat yourself at Miraval.

Note 2: If you descend full Gem to The Chutes, do not climb back up the primary Chutes descent. People bomb that line with speed and abandon. Instead, descend to the bottom of The Chutes, then climb back via Chutes Alt or the far side of the loop.