WRC

RMRR Spring Marathon Training Series #2

location_on

calendar_today 11 Apr, 2026

directions_run Running

language Official Website

sell $20 – $30

About the Event

RMRR provides consistent and individualized marathon training opportunities for runners of all abilities.

All races in the series are low cost, friendly, fully supported, and officially timed.The first two races, March 29 & April 11, are 10 Mile and 20 Mile races (runners choice for distance). The third race in the series is the Inaugural Blue Heron half marathon.  All you need to do is focus on your running!  Our races fit perfectly in training schedules for Boston, London, Colfax, and other spring full and half marathons.

Everyone is welcome to Marathon Training Series races:  RMRR members, guests, training team members, everyone!  The course is clearly marked, and mile markers will help you gauge your time. Aid stations will have water, sports drink, and gels. Winners of each distance will receive ribbons and running store gift certificates. We make it easy for you to work on your pace, your nutrition and drinking, and getting everything ready for your big race.

RMRR members get a 50% discount (automatically taken at registration check out). Race day registration will be available.

Please note that for everyone's safety dogs or running strollers are not permitted on our courses.  Thanks for understanding.

The  races begin at 8 am at the Platte River Trailhead Park in Thornton, at 88th and Colorado.

Races Offered

MTS#2 - 10 Mile

Apr 11, 2026

straighten

Distance — 10 Miles

terrain

Type — Running

timer

08:00

sell

$20.00

MTS#2 - 20 Mile

Apr 11, 2026

straighten

Distance — 20 Miles

terrain

Type — Running

timer

08:00

sell

$30.00

Weather Overview

These values represent the 3-year monthly averages for April in Thornton.

Temp (°C)
Feels Like (°C)
thermostat 1.7° / 18.0°
wb_sunny -2.8° / 13.4°
Wind (km/h)
Humidity (%)
air 10.4 /
water_drop 50.1%

About Thornton

Scenic view of

Thornton is a city of about 144,000 in the Denver Metropolitan Area of the western U.S. state of Colorado. The city lies northwest of Denver in Adams and Weld counties. It is a diverse community with a strong commitment to quality of life and environmental issues.

Read more launch

Hotels & Places to Stay

Nearby Races

Explore other exciting events happening in this same region.

RMRR Spring Marathon Training Series #1

RMRR Spring Marathon Training Series #1

location_on Thornton, Colorado, US

calendar_today Mar 29, 2026

Erin Go Bragh 7.77k

Erin Go Bragh 7.77k

location_on Westminster, Colorado, US

calendar_today Mar 14, 2026

All-Out Beat the Heat

All-Out Beat the Heat

location_on Westminster, Colorado, US

calendar_today Apr 18, 2026

Colorado Women's Classic - Westminster

Colorado Women's Classic - Westminster

location_on Westminster, Colorado, US

calendar_today May 10, 2026

Recommended for You

Hand-picked events we think you’ll love.

Run Manatee - Rye Preserve 5K -2026

Nov 21, 2026

Run Manatee - Rye Preserve 5K -2026

The RUN Manatee 5k series offers THREE adventures to celebrate ONE community. Participants will discover Manatee County…

Read more
Turkey Trails - Sioux Falls

Nov 28, 2026

Turkey Trails - Sioux Falls

Join us for the annual Turkey Trails 5k/10k!  A fun, Thanksgiving-themed event that is perfect for the whole family.The…

Read more
Candy Cane Course- Lincoln

Dec 13, 2026

Candy Cane Course- Lincoln

Join us for the annual Candy Cane Course 5k/12k!  A fun, Christmas-themed event that is perfect for the whole family.Th…

Read more
Space Coast Triathlon and Duathlon

Mar 21, 2027

Space Coast Triathlon and Duathlon

WE ARE NOW OFFERING AN AQUABIKE DIVISION! Triathlon Information:Join us for the annual Space Coast Triathlon, held in …

Read more

Get race deals & updates

Subscribe to our newsletter for curated race picks and discounts.