Trail Running Calendar United States 2026-2027

Experience a technical trail race through the redwood groves of Joaquin Miller and Redwood Regional parks. Choose from multiple distances ranging from an 8K to a 50K ultra marathon on accurately measured courses.

Experience the mountain trails of Park City at the Twisted Fork Trail Festival. Choose between three distances featuring scenic ridgelines, aspen groves, and a lively finish at the Newpark Amphitheater.

Trail races at Giant City State Park include a new 5k, a half marathon loop, and a 40k two loop option on mostly single track with creek crossings, aid stations, cupless format, and optional t shirts.

Angry Cow Trail Run / Obstacle Race at Rockford Lake features an approximately 4 to 5 mile trail with on-course challenges, two-person team racing and a rucking option. Registration includes a shirt, awards, snacks and drinks.

An ultraloop on a hilly 7.7 mile circuit with a strict two hour lap cutoff and self supported format. Laps alternate direction and top finishers receive shoes and per lap cash prizes.

Trail running events at A.W. Marion State Park along Hargus Lake shoreline, featuring a half marathon, 10K, 5K, 6 Hours of Power and a 20K relay across 310 acres of woodlands and native landscapes.

San Mateo PAL's May 30, 2026 community event at Seal Point Park features a 5K run/walk, a 10K run, a free Wellness Fair, and a yoga option. Race entries include a t-shirt and finisher medal, and vendor booths are available.

Muddy Dash in Oklahoma City is a 5K mud run with obstacles and waist-deep mud pits, plus a pre-party and an after-party with music, food, and beer at Lost Lake Entertainment Complex on May 30, 2026. Kids are welcome under event rules.

A timed trail event in Laurens, SC offering 3 hour, 6 hour, 12 hour, 24 hour formats and a 6 hour ruck. The race uses a roughly 5 mile loop with varied trail footing and supports Project Hope Foundation.

Timed endurance event on a 1.70 mile paved loop around Lake Tye in Monroe, WA with 12 hour, 6 hour and 3 hour options, aid stations, chip timing, medals and post-race food. Proceeds support local trail maintenance.

A mountain trail event near Stockton, Utah offering a 50 mile, a 50K, and a half marathon across mining roads and ATV trails with substantial climbing and multiple aid stations.

Trail run at Brown County State Park on May 30, 2026 offering 5K and 15K routes with sustained climbs and long descents, online registration, GPX files, and a free kids race.

A 15 km summit climb in Havana, Arkansas, the Mount Magazine 15K includes a short dirt approach, a paved ascent to the top, and a shuttle back down. Run, walk, and virtual options come with a race shirt and custom medals.

A dog friendly 5K and 1 mile event at North Tahoe Regional Park with an expo, non competitive activities, and a fundraiser supporting local animal rescue and veterinary care.

A free community trail running festival in Crystal Lake, IL that gathers race directors, run clubs, brands, and vendors for a social run, expo, food, and a raffle. Two route options are offered and the event is cupless.

A multi discipline endurance festival in the White Mountains of northeastern Arizona offering triathlons, aquabikes, runs and relay options. Children ages 5 and up can enter a youth triathlon and all participants are timed with RFID chips.

A Backyard Ultra on May 30, 2026 in Durango: runners complete a repeated 4.17-mile loop each hour until one remains. The event raises funds for Durango Trails and requires an entry fee plus a per-yard pledge minimum.

A 5K style mud and obstacle course in East Fork State Park featuring more than 15 natural and man made obstacles, from crawls and climbs to cargo nets and a final sandy beach run. The route uses existing trails and is about 3.1 miles.

Trail races of 10 km and 5 km start at First Dam in Logan, Utah, following the Bonneville Shoreline toward Green Canyon. Registration includes a t-shirt, medal, SWAG bag, race bib and timed results.

A trail running event at Fausett Farms in the Georgia Mountains on May 30th, 2026, offering 10k and 15k courses with packet pick up the day before and before the race; registration is through UltraSignup and closes the morning of the event.