About the RMRR Fall Marathon Training Series #2
The race is part of a training series held at the Riverdale Ballfields, a park setting that lends itself to the kind of steady, measured effort a marathon training run calls for. The registration area has covered space with tables and public restrooms nearby.
Parking is at the ballfields themselves, so there is no separate lot to find or shuttle to catch. The covered registration area means you have somewhere to wait and get ready before the start, whatever the weather is doing.
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Distances & Start Times
20K9/13/2026 07:00$20
30K9/13/2026 07:00$30
Going for a Time?
Set a goal and get a pace band: every mile split on a card sized for your phone lock screen, so race morning needs no math.
Where to Stay
Traveling for this race? The map shows hotels and rentals in and around Thornton — pan or zoom to compare what's nearby.
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