It's a Trail Day

Activities

By activity

Each activity has its own ideal temperature range and mud sensitivity. Trail conditions get scored separately per activity — a perfect mountain-bike day on dirt singletrack can still be a marginal day for a hot-weather dog walk.

All activities

Hiking

Ideal 48–75°F

On-foot travel with a day pack. Tolerant of moderate mud and a wide temp range. Sensitive to thunderstorms, heat indices above 95°F, and AQ degradation at altitude.

Comfort: 32–85°F Mud penalty: standard

Trail running

Ideal 42–65°F

Higher effort, higher heart rate — runners are more temp-sensitive than hikers and won't run in thunder. Slippery mud is a fall risk.

Comfort: 28–78°F Mud penalty: high

Mountain biking

Ideal 45–78°F

Wet trails get destroyed by tires. MTB-ers honor closures aggressively — a "muddy" rating here matters more than it does for hikers. Not permitted on all trails.

Comfort: 32–90°F Mud penalty: high

Dog walking

Ideal 40–72°F

Short-radius trail outings with a dog. Sensitive to paw-burning heat on exposed rock, very sensitive to thunderstorms, and always checks dog-rule compliance.

Comfort: 25–82°F Mud penalty: low