Old Man Winter Bike Rally & Run
Lyons, Colorado9:00 AM start
from $49
RegisterRaces near Longmont
Triathlons near Longmont, Colorado
10 upcoming triathlons, duathlons and aquabikes within 100 miles of Longmont, 6 of them within 50. Most triathletes drive to race, so this page lists everything in reach, nearest first by band, with the distance from Longmont on each race.
10
within 100 miles
6
within 50 miles
4
within 25 miles
0
with a pool swim
In reach of Longmont, by kind
Within 25 miles of Longmont (4)
Colorado Triathlon
Boulder, ColoradoOpen water swim
from $105
RegisterSummer Vibes Bike Rally & Run Festival
Lyons, Colorado8:00 AM start
from $59
RegisterBoulder Peak Triathlon
Boulder, Colorado7:15 AM startOpen water swim
from $115
Register25 to 50 miles away (2)
50 to 100 miles away (4)
from $40
RegisterALMAGEDDON Winter Triathlon presented by the Alma Foundation
Alma, Colorado9:00 AM startOpen water swim
Sprint Triathlon80 mi away
from $90
RegisterRace in the Clouds - Alma Dirt Festival 2027
Alma, Colorado1:30 PM startTrail
from Free
RegisterStagecoach Gravel Triathlon
Oak Creek, Colorado8:05 AM startTrailOpen water swim
from $110
RegisterBike races and rides within 100 miles
from Free
Register
from $30
RegisterChasing Santa 5k/Cycling Santa Toy Drive Presented by: Springs Law Group
Colorado Springs, Colorado9:00 AM start
from Free
RegisterOld Man Winter Bike Rally & Run
Lyons, Colorado9:00 AM start
from $49
RegisterSummer Vibes Bike Rally & Run Festival
Lyons, Colorado8:00 AM start
from $59
Register
from $85
RegisterRace in the Clouds - Alma Dirt Festival 2027
Alma, Colorado1:30 PM startTrail
from Free
Registerfrom $25
Register
from Free
RegisterDistances are straight lines from the center of Longmontto each race's listed start; the drive is longer. Races with no listed location are left out.