This study assessed the causes and extent of delays in road construction projects in Uganda, using selected road projects as a case study. A quantitative design was adopted, and a coded dataset of 120 road projects was analysed using descriptive statistics, Pearson correlations, multiple linear regression of schedule overrun and binary logistic regression of major delay, supported by diagnostic tests. The study results indicated that schedule overruns averaged 17.1% of the contract period and that right-of-way delays (B = 8.72 percentage points, p < 0.001), delays in the payment of certificates, variation orders, overlap with the wet season and longer road length increased overrun, while greater contractor experience reduced it. Right-of-way delays and wet-season overlap multiplied the odds of a major delay by factors of 14.3 and 15.3 respectively. Heteroscedasticity was detected and addressed through robust standard errors, which left the conclusions unchanged. The study concluded that delays were driven mainly by client-side and contractual factors, and it recommended timely land acquisition and compensation, prompt payment, disciplined variation management and contractor prequalification.