Levi's GranFondo Training Plan

Levi's GranFondo is the premier mass-participation road cycling event in the western United States — and the richest single-day road race in the world, with elite men and women competing alongside thousands of recreational riders on the same Sonoma County roads. The Gran route (103 mi / ~10,000 ft) and the flagship Growler (138.5 mi / ~13,000 ft) wind through wine country vineyard corridors, up exposed coastal ridge climbs on King Ridge Road, and into the remote Geysers before a bone-cracking return. There is no flat day in Sonoma County: the terrain is relentlessly rolling with punchy short steep climbs scattered between the big signature ascents. It rewards riders who have trained their legs to handle repeated surges and who know how to manage effort when their GPS tells them the climb never truly ends.

Course demands

The Gran and Growler courses pile climbing onto climbing in the Northern California coastal ranges — King Ridge Road is the defining 9-mile sustained ascent, but the Stewarts Point climbs and the Geysers (on the Growler) add another 3,000+ feet late in the ride when legs are already taxed. Coastal fog and variable spring temperatures can swing 20°F between morning and afternoon, while the exposed ridges accelerate dehydration. The key pacing trap is the fast opening miles through the valley, where competitive riders surge and recreational riders get swept along — burning glycogen they'll desperately need for King Ridge.

Who this plan is for

Motivated North American road cyclists targeting a high-profile California gran fondo with a professional race atmosphere and a course that punishes under-preparation.

What makes this plan unique

Repeated punchy short climbs (3–8 min VO2max efforts) mixed into long Zone 2 rides; back-to-back Saturday/Sunday long rides to simulate race weekend; sweet-spot intervals on moderate climbs to train sustainable climbing pace.

What the plan targets

• Punchy climb repeatability — handling short 4–12% surges after hours of riding
• Sustained climbing endurance on King Ridge–style 8–10 mile ascents
• Aerobic engine for 5–8 hour efforts on rolling terrain
• Variable-temperature fueling and hydration strategies
• Race-start pacing discipline — resisting early valley surges

What you will get

• Progressive long ride build from 3 hours to full Gran Fondo simulation days
• Punchy climbing interval sessions replicating Sonoma's rolling terrain
• Event-day pacing frameworks for rolling courses with repeated short climbs
• Nutrition and gear strategies for coastal variable-weather days