Mainly Marathons Alaska Series

AUG
3-6
2027
Four days of multi loop races in Juneau with marathon, half, 50K, 10K and 5K options and a special medal for completing all four days.
3-6 Aug 2027
50 kilometers 26 miles 13 miles 10 kilometers 5 kilometers

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Alaska Series Mainly Marathons

The Mainly Marathons Alaska Series takes place over four consecutive days in Juneau, Alaska, and includes multiple race distances across two nearby course areas. Special medals are awarded to participants who complete all four days.

Packet pickup and race day registration are available each race morning at the start line. Entry fees vary by registration date; typical fees range from $150 to $195 for the full marathon, $135 to $175 for the half marathon, $160 to $205 for the 50K, $70 to $80 for the 10K, and $60 to $70 for the 5K.** Entry fees are non refundable and may not be transferred to another participant.

Most race days have no enforced time limit for the marathon and shorter distances, but the final day has a 10 hour time limit. Participants should plan to finish at least 30 minutes before park closing times. Pets are not allowed; strollers are permitted.

The event provides a single large aid station on the multi loop course, offering fruit, jelly beans, sandwiches, water, Gatorade, and hot chocolate milk.

Course details Savikko Park Treadwell Trail in Douglas features pavement, hard packed dirt, and crushed gravel with moderate shade and about 19 feet elevation gain per lap. Marathon tentatively requires 14 laps there.

Twin Lakes uses a smooth biking and walking path with small hills and about 27 feet elevation gain per lap. Marathon tentatively requires 14 laps there.

Organizers note a participant group is used to coordinate group dinners, lodging, and airport logistics. Discounts of $10 are available to active military and to members of clubs that list these events on their calendars. Visit the organization's website for the most recent information.

Events nearby

Thanksgiving morning 5 km or 1 mile run/walk on Juneau’s Airport Dike Trail with costumes encouraged and proceeds benefiting the local high school cross country team.
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