Western States 100 Finish Time Predictor

Western States is unusual among major 100-milers: it has more descent than gain (7,000m D- vs 5,600m D+), a predominantly runnable profile after the opening climb, and extreme heat in the middle canyon sections. The predictor accounts for the elevation profile but cannot model heat - which is frequently the decisive factor on race day.

Heat adjustment. Canyon temperatures regularly reach 38-42°C in June. For runners racing in those conditions, add 10-15% to the predictor's conservative estimate for a realistic finish time. Runners who have trained in heat and are physiologically acclimatised can stay closer to the model output.

Best reference races for Western States prediction. Other point-to-point or loop 100-milers with significant descent (Angeles Crest 100, Cascade Crest 100) give the most accurate transfers. Mountain ultras with heavy climb-to-descent asymmetry will underpredict your WS time because WS has fast runnable sections that reward road-speed capacity. The predictor normalises for effort, but individual strengths on descending vs climbing introduce additional variance.

Silver Buckle and sub-24 goals. The Silver Buckle is awarded for sub-24 hour finishes. This corresponds to roughly a 50-mile trail race in 9:30-10:30 or a 100km mountain ultra in 12-14 hours. Sub-24 at Western States is achievable for strong trail runners with good heat tolerance and smart pacing through the canyons.

Once you have a predicted finish time, use the Western States Aid Station Planner to build checkpoint splits and coordinate your crew.