Montara Mountain 20 Mile
Race Day Weather
Cool start — fast day potential
A cool 47°F at the start line is ideal for fast times — expect to warm up quickly once you're moving. Light winds shouldn't be a major factor for pacing. Moderate humidity at 73% is worth noting for effort level, especially in later miles.
Pace Calculator
Enter a finish time to see what race day does to it.
Get forecast alerts for Montara Mountain 20 Mile
We'll text or email you when the forecast shifts — so you can adjust gear, pacing, and strategy. Max one per day.
Get your personalized Montara Mountain 20 Mile race plan
A mile-by-mile breakdown of where your time goes, weather-adjusted splits, fueling timeline with aid stations, packing checklist, carb tracker, spectator guide, all built around your goal and race-day conditions.
Race Info
The 20 mile is a mid-distance trail option that begins and ends at San Pedro Valley Park in Pacifica. Roughly two thirds of it is single track, with the rest on dirt roads and a small amount of pavement, and it climbs about 4,640 feet on Montara Mountain. The route passes through coastal scrub and groves of manzanita with views toward the Pacific.