Idaho's most beautiful gravel race. 100 miles through the Pioneer Mountains. Not made to be easy.
4,200 miles from the Pacific to the Atlantic. The longest road ultra-race on earth. Self-supported across 10 states. Ame
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Trans Am Bike Race scores 10 points higher overall (90 vs 80), but the right choice depends on what you value most.
"The gravel pilgrimage that sells itself through pure experience."
"The longest self-supported bike race on earth—4,200+ miles from Pacific to Atlantic, crossing 10 states, no support crews, pure transcontinental adventure."
Trans Am Bike Race rates as the more demanding race based on our composite difficulty score (averaging length, technicality, elevation, climate, and altitude ratings). If you're looking for the bigger challenge, go with Trans Am Bike Race. If you want a more accessible race, Rebecca's Private Idaho is the better pick.
Trans Am Bike Race scores 90/100 compared to 80/100 in our 15-dimension Gravel God Rating. The overall score reflects course profile, prestige, race quality, community, and value.
Trans Am Bike Race is generally more accessible for first-time gravel racers, factoring in distance, technicality, and logistical ease. Check each race's full profile for distance options and beginner-specific advice.
Rebecca's Private Idaho takes place in September and Trans Am Bike Race in June. If your calendar allows, you could race both in the same season.
Rebecca's Private Idaho is held in Ketchum, Idaho. Trans Am Bike Race is held in Astoria, Oregon to Yorktown, Virginia. Consider travel logistics, especially if you're flying in — check our full race profiles for airport and lodging details.
Get a personalized training plan for either race — tailored to your fitness, schedule, and goals.
$15/week, capped at $249. One-time payment.