The route runs through forested areas with some fields across a gap in Clear Ridge, curving to the north into a narrow agricultural valley.

After descending Sideling Hill, the route enters the Trough Creek Valley and heads north into the borough of Cassville and becomes Walnut Street, passing homes.

PA 829 curves to then north-northeast and runs through more areas of farms and woods with occasional homes.

Past here, PA 829 becomes Trough Creek Valley Road and heads into forests, crossing Sideling Hill again.

At this point, PA 829 heads into Henderson Township and runs through rural areas of homes, crossing Norfolk Southern's Pittsburgh Line before ending at US 22.