Jessica Griffiths

1 week ago | coloradorunnermag.com | Jessica Griffiths

The Flamingo Day 5K run and walk will return for a fifth year on Sunday, June 1, 2025 at Sloan’s Lake Park in Denver. With themed shirts and finisher’s medals, the race is a fun way to stay healthy, active and motivated in your fitness goals. Registration is open at https://www.coloradorunnerevents.com/Flamingo/Runners and walkers will receive a disposable timing chip on their bib number to time their race as they complete the 5k course. A course map is available online.

2 weeks ago | coloradorunnermag.com | Jessica Griffiths

After a one-year break, the Aspen Backcountry Marathon is officially making its comeback on Saturday, August 2, 2025. The event was a labor of love for the City of Aspen and produced directly by the City in the past. This year, the event is being brought to life by Aravaipa Running, in close collaboration with the City of Aspen and local trail runner Jeff Colt, who’s been instrumental in getting this classic mountain race back on its feet.

4 weeks ago | coloradorunnermag.com | Jessica Griffiths

The London Marathon has received more than 1.1 million applications for the 2026 race, breaking the world record of 840,318 set in last year‘s public ballot. A total of 1,133,813 people across the globe applied for a place in next year’s race on April 26. Nearly 870,000 people in the UK applied, split almost equally between men and women. Around 264,000 people from overseas entered the international ballot.

1 month ago | coloradorunnermag.com | Jessica Griffiths

The Denver Colfax Marathon, presented by Cigna Healthcare, is proud to announce their 2025 race season sponsor line up ahead of its spring race weekend in the Mile High. Denver’s only marathon weekend will take place May 16 – 18th, 2025. The marathon welcomes back several returning sponsors, and they are also bringing new partnerships to the race, taking the runner experience to the next level. “Our sponsors make this race weekend a reality,” said Andrea Dowdy, CEO of the Denver Colfax Marathon.

1 month ago | coloradorunnermag.com | Jessica Griffiths

Join us for the 21st anniversary of the Greenland Trail Races! The race is scheduled for May 3 in Larkspur, Colorado at the Greenland Open Space Park in southern Douglas County, south of Castle Rock, just off I-25. The Greenland Trail 50K has been awarded the Road Runners Club of America Western Region Championship. More details can be found online at www.greenland50k.com. The Greenland 50K is celebrating its 21st year of trail running at Greenland Open Space.