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View Event Details Oct 21 Crimson Classic 5K 3:00 PM - 5:00 PM University of Denver - Carnegie Green Lawn 2150 East Evans Ave, Denver Event Details Get Directions Event Details Get Directions Oct 24 Canyonlands Ultra 6:00 AM - 5:00 PM Behind the Rocks Trailhead Moab Event Details Get Directions Event Details Get Directions Oct 24 Bridge Runner Ultra 7:30 AM - 5:00 PM Centennial Park - Cañon City Cañon City Event Details Get Directions Event Details Get Directions Oct 24 Cowboy Half Marathon 8:00 AM - 5:00 PM Mancos Public Library 211 W. 1st, Mancos Event Details Get Directions Event Details Get Directions Oct 24 Race to Cure Sarcoma 5K 8:30 AM - 5:00 PM Berkeley Lake Park 4601 W 46th Ave, Denver Event Details Get Directions Event Details Get Directions Oct 24 Trick or Trot 5K 9:00 AM Apex Center 13150 W 72nd Ave, Arvada Event Details Get Directions Event Details Get Directions Oct 24 YMCA Creepy Crawl 5K 9:30 AM - 10:30 AM Palmer Lake Regional Park 199 County Line Road, Palmer Lake Event Details Get Directions Event Details Get Directions Oct 24 Quick Draw @ McGraw Trail Race 10:00 AM - 5:00 PM McGraw Memorial Park 39 Wellington Lake Rd, Bailey Event Details Get Directions Event Details Get Directions Oct 24 MonsterDASH 10:00 AM - 6:00 PM Sloan's Lake Park 1700 Utica Street, Denver Event Details Get Directions Event Details Get Directions Oct 24 Spooky Sprint 5K 4:00 PM - 5:00 PM Pueblo YMCA 3200 E. Spaulding Ave, Pueblo Event Details Get Directions Event Details Get Directions Oct 24 Hoofin’ It Through the Hollows 5K 5:30 PM - 7:30 PM deKoevend Park 6315 S. University Blvd., Centennial Event Details Get Directions Event Details Get Directions Oct 25 The Stride 5K/10K 8:30 AM - 10:30 AM Littleton Museum 6028 S. Gallup St., Littleton Event Details Get Directions Event Details Get Directions Oct 25 Beware the Bear Trail Races 8:30 AM - 11:30 AM Bear Creek Lake Park 15600 W Morrison Rd, Lakewood Event Details Get Directions Event Details Get Directions Oct 25 Ghosts & Goblins 5K/10K Featured 9:00 AM - 11:00 AM City Park - Denver 2001 Steele St, Denver Event Details Get Directions Event Details Get Directions Oct 25 Odyssey Odyssey 5K 9:00 AM - 5:00 PM Great Lawn Park 101 Yosemite St, Denver Event Details Get Directions Event Details Get Directions Oct 25 Five Alarm 5K 10:00 AM - 5:00 PM Bierstadt Lagerhaus 2875 Blake Street, Denver Event Details Get Directions Event Details Get Directions Oct 25 MonsterDASH 10:00 AM - 6:00 PM Louisville Community Park 955 Bella Vista Dr, Louisville Event Details Get Directions Event Details Get Directions Oct 31 Narrowleaf Lake Run 8:00 AM - 11:00 AM Boyd Lake State Park 3720 N Co Rd 11C, Loveland Event Details Get Directions Event Details Get Directions Oct 31 Spooky Sprint Half Marathon 8:00 AM - 5:00 PM Goose Gossege Park 3950 Mark Dabling Blvd, Colorado Springs Event Details Get Directions Event Details Get Directions Oct 31 Colorado 24 Hour Run 8:00 AM - 5:00 PM Colorado Youth Outdoors 4927 County Rd 36, Fort Collins Event Details Get Directions Event Details Get Directions Oct 31 Colleen De Reuck XC Classic 9:00 AM - 12:00 PM Harlow Platts Community Park 1360 Gillaspie Drive, Boulder Event Details Get Directions Event Details Get Directions Oct 31 HRCA Backcountry Wilderness Half 9:00 AM - 1:00 PM Rocky Heights Middle School 11033 Monarch Blvd, Highlands Ranch Event Details Get Directions Event Details Get Directions Oct 31 Foundry Halloween 5K 9:00 AM - 5:00 PM Soda Creek Elementary School 220 Park Avenue, Steamboat Springs Event Details Get Directions Event Details Get Directions Oct 31 Eerie Erie 5K/10K 9:30 AM - 5:00 PM Erie United Methodist Church 604 Holbrook St, Erie Event Details Get Directions Event Details Get Directions Oct 31 I Ain’t Scared (of 5K) 9:30 AM - 5:00 PM Carpenter Park 3498 E 112th Ave, Thornton Event Details Get Directions Event Details Get Directions Oct 31 Halloween Peach 5K 10:00 AM - 11:30 AM Cedar Mesa Clubhouse 15637 Peach Rd, Cedaredge Event Details Get Directions Event Details Get Directions Oct 31 EAPL Zombie Run 5K 10:00 AM - 12:00 PM Buchanan Park Recreation Center 32003 Ellingwood Trail, Evergreen Event Details Get Directions Event Details Get Directions Oct 31 Halloween Fun Run 10:00 AM - 5:00 PM Clear Creek Middle School 320 Chicago Creek Rd, Idaho Springs Event Details Get Directions Event Details Get Directions Nov 1 Rim Rock Marathon 6:00 AM - 11:59 PM Colorado National Monument 2328 Monument Road, Grand Junction Event Details Get Directions Event Details Get Directions Nov 1 Feet for Justice 5K/10K 8:30 AM - 5:00 PM City Park - Denver 2001 Steele St, Denver Event Details Get Directions Event Details Get Directions Previous Events Today Next Events 952 952
Oct 21 Crimson Classic 5K 3:00 PM - 5:00 PM University of Denver - Carnegie Green Lawn 2150 East Evans Ave, Denver Event Details Get Directions
Oct 24 Canyonlands Ultra 6:00 AM - 5:00 PM Behind the Rocks Trailhead Moab Event Details Get Directions
Oct 24 Bridge Runner Ultra 7:30 AM - 5:00 PM Centennial Park - Cañon City Cañon City Event Details Get Directions
Oct 24 Cowboy Half Marathon 8:00 AM - 5:00 PM Mancos Public Library 211 W. 1st, Mancos Event Details Get Directions
Oct 24 Race to Cure Sarcoma 5K 8:30 AM - 5:00 PM Berkeley Lake Park 4601 W 46th Ave, Denver Event Details Get Directions
Oct 24 YMCA Creepy Crawl 5K 9:30 AM - 10:30 AM Palmer Lake Regional Park 199 County Line Road, Palmer Lake Event Details Get Directions
Oct 24 Quick Draw @ McGraw Trail Race 10:00 AM - 5:00 PM McGraw Memorial Park 39 Wellington Lake Rd, Bailey Event Details Get Directions
Oct 24 MonsterDASH 10:00 AM - 6:00 PM Sloan's Lake Park 1700 Utica Street, Denver Event Details Get Directions
Oct 24 Spooky Sprint 5K 4:00 PM - 5:00 PM Pueblo YMCA 3200 E. Spaulding Ave, Pueblo Event Details Get Directions
Oct 24 Hoofin’ It Through the Hollows 5K 5:30 PM - 7:30 PM deKoevend Park 6315 S. University Blvd., Centennial Event Details Get Directions
Oct 25 The Stride 5K/10K 8:30 AM - 10:30 AM Littleton Museum 6028 S. Gallup St., Littleton Event Details Get Directions
Oct 25 Beware the Bear Trail Races 8:30 AM - 11:30 AM Bear Creek Lake Park 15600 W Morrison Rd, Lakewood Event Details Get Directions
Oct 25 Ghosts & Goblins 5K/10K Featured 9:00 AM - 11:00 AM City Park - Denver 2001 Steele St, Denver Event Details Get Directions
Oct 25 Odyssey Odyssey 5K 9:00 AM - 5:00 PM Great Lawn Park 101 Yosemite St, Denver Event Details Get Directions
Oct 25 Five Alarm 5K 10:00 AM - 5:00 PM Bierstadt Lagerhaus 2875 Blake Street, Denver Event Details Get Directions
Oct 25 MonsterDASH 10:00 AM - 6:00 PM Louisville Community Park 955 Bella Vista Dr, Louisville Event Details Get Directions
Oct 31 Narrowleaf Lake Run 8:00 AM - 11:00 AM Boyd Lake State Park 3720 N Co Rd 11C, Loveland Event Details Get Directions
Oct 31 Spooky Sprint Half Marathon 8:00 AM - 5:00 PM Goose Gossege Park 3950 Mark Dabling Blvd, Colorado Springs Event Details Get Directions
Oct 31 Colorado 24 Hour Run 8:00 AM - 5:00 PM Colorado Youth Outdoors 4927 County Rd 36, Fort Collins Event Details Get Directions
Oct 31 Colleen De Reuck XC Classic 9:00 AM - 12:00 PM Harlow Platts Community Park 1360 Gillaspie Drive, Boulder Event Details Get Directions
Oct 31 HRCA Backcountry Wilderness Half 9:00 AM - 1:00 PM Rocky Heights Middle School 11033 Monarch Blvd, Highlands Ranch Event Details Get Directions
Oct 31 Foundry Halloween 5K 9:00 AM - 5:00 PM Soda Creek Elementary School 220 Park Avenue, Steamboat Springs Event Details Get Directions
Oct 31 Eerie Erie 5K/10K 9:30 AM - 5:00 PM Erie United Methodist Church 604 Holbrook St, Erie Event Details Get Directions
Oct 31 I Ain’t Scared (of 5K) 9:30 AM - 5:00 PM Carpenter Park 3498 E 112th Ave, Thornton Event Details Get Directions
Oct 31 Halloween Peach 5K 10:00 AM - 11:30 AM Cedar Mesa Clubhouse 15637 Peach Rd, Cedaredge Event Details Get Directions
Oct 31 EAPL Zombie Run 5K 10:00 AM - 12:00 PM Buchanan Park Recreation Center 32003 Ellingwood Trail, Evergreen Event Details Get Directions
Oct 31 Halloween Fun Run 10:00 AM - 5:00 PM Clear Creek Middle School 320 Chicago Creek Rd, Idaho Springs Event Details Get Directions
Nov 1 Rim Rock Marathon 6:00 AM - 11:59 PM Colorado National Monument 2328 Monument Road, Grand Junction Event Details Get Directions
Nov 1 Feet for Justice 5K/10K 8:30 AM - 5:00 PM City Park - Denver 2001 Steele St, Denver Event Details Get Directions
