diff --git a/common/router1.cc b/common/router1.cc
index de5caa5a..e9a9bc4b 100644
--- a/common/router1.cc
+++ b/common/router1.cc
@@ -143,12 +143,12 @@ struct Router
                 thisVisitCntLimit = (thisVisitCnt * 3) / 2;
 
             for (auto pip : ctx->getPipsDownhill(qw.wire)) {
-                delay_t next_delay = qw.delay + ctx->getPipDelay(pip).avgDelay();
+                delay_t next_delay = qw.delay + ctx->getPipDelay(pip).maxDelay();
                 WireId next_wire = ctx->getPipDstWire(pip);
                 bool foundRipupNet = false;
                 thisVisitCnt++;
 
-                next_delay += ctx->getWireDelay(next_wire).avgDelay();
+                next_delay += ctx->getWireDelay(next_wire).maxDelay();
 
                 if (!ctx->checkWireAvail(next_wire)) {
                     if (!ripup)
@@ -228,7 +228,7 @@ struct Router
             : ctx(ctx), scores(scores), ripup(ripup), ripup_penalty(ripup_penalty)
     {
         std::unordered_map<WireId, delay_t> src_wires;
-        src_wires[src_wire] = ctx->getWireDelay(src_wire).avgDelay();
+        src_wires[src_wire] = ctx->getWireDelay(src_wire).maxDelay();
         route(src_wires, dst_wire);
         routedOkay = visited.count(dst_wire);
 
@@ -286,7 +286,7 @@ struct Router
             log("    Source wire: %s\n", ctx->getWireName(src_wire).c_str(ctx));
 
         std::unordered_map<WireId, delay_t> src_wires;
-        src_wires[src_wire] = ctx->getWireDelay(src_wire).avgDelay();
+        src_wires[src_wire] = ctx->getWireDelay(src_wire).maxDelay();
 
         ripup_net(ctx, net_name);
         ctx->bindWire(src_wire, net_name, STRENGTH_WEAK);
diff --git a/ecp5/archdefs.h b/ecp5/archdefs.h
index 941607ba..40442e1b 100644
--- a/ecp5/archdefs.h
+++ b/ecp5/archdefs.h
@@ -32,9 +32,14 @@ struct DelayInfo
 {
     delay_t delay = 0;
 
-    delay_t raiseDelay() const { return delay; }
-    delay_t fallDelay() const { return delay; }
-    delay_t avgDelay() const { return delay; }
+    delay_t minRaiseDelay() const { return delay; }
+    delay_t maxRaiseDelay() const { return delay; }
+
+    delay_t minFallDelay() const { return delay; }
+    delay_t maxFallDelay() const { return delay; }
+
+    delay_t minDelay() const { return delay; }
+    delay_t maxDelay() const { return delay; }
 
     DelayInfo operator+(const DelayInfo &other) const
     {
diff --git a/generic/archdefs.h b/generic/archdefs.h
index 06d4ec6e..b318d5af 100644
--- a/generic/archdefs.h
+++ b/generic/archdefs.h
@@ -29,11 +29,14 @@ struct DelayInfo
 {
     delay_t delay = 0;
 
-    delay_t raiseDelay() const { return delay; }
+    delay_t minRaiseDelay() const { return delay; }
+    delay_t maxRaiseDelay() const { return delay; }
 
-    delay_t fallDelay() const { return delay; }
+    delay_t minFallDelay() const { return delay; }
+    delay_t maxFallDelay() const { return delay; }
 
-    delay_t avgDelay() const { return delay; }
+    delay_t minDelay() const { return delay; }
+    delay_t maxDelay() const { return delay; }
 
     DelayInfo operator+(const DelayInfo &other) const
     {
diff --git a/gui/designwidget.cc b/gui/designwidget.cc
index f7ae82f5..c40e58d3 100644
--- a/gui/designwidget.cc
+++ b/gui/designwidget.cc
@@ -507,6 +507,14 @@ void DesignWidget::onItemSelectionChanged()
         addProperty(topItem, QVariant::String, "Conflicting Net", ctx->getConflictingWireNet(wire).c_str(ctx),
                     ElementType::NET);
 
+        DelayInfo delay = ctx->getWireDelay(wire);
+
+        QtProperty *delayItem = addSubGroup(topItem, "Delay");
+        addProperty(delayItem, QVariant::Double, "Min Raise", delay.minRaiseDelay());
+        addProperty(delayItem, QVariant::Double, "Max Raise", delay.maxRaiseDelay());
+        addProperty(delayItem, QVariant::Double, "Min Fall", delay.minFallDelay());
+        addProperty(delayItem, QVariant::Double, "Max Fall", delay.maxFallDelay());
+
         QtProperty *belpinItem = addSubGroup(topItem, "BelPin Uphill");
         BelPin uphill = ctx->getBelPinUphill(wire);
         if (uphill.bel != BelId())
@@ -566,9 +574,10 @@ void DesignWidget::onItemSelectionChanged()
         DelayInfo delay = ctx->getPipDelay(pip);
 
         QtProperty *delayItem = addSubGroup(topItem, "Delay");
-        addProperty(delayItem, QVariant::Double, "Raise", delay.raiseDelay());
-        addProperty(delayItem, QVariant::Double, "Fall", delay.fallDelay());
-        addProperty(delayItem, QVariant::Double, "Average", delay.avgDelay());
+        addProperty(delayItem, QVariant::Double, "Min Raise", delay.minRaiseDelay());
+        addProperty(delayItem, QVariant::Double, "Max Raise", delay.maxRaiseDelay());
+        addProperty(delayItem, QVariant::Double, "Min Fall", delay.minFallDelay());
+        addProperty(delayItem, QVariant::Double, "Max Fall", delay.maxFallDelay());
     } else if (type == ElementType::NET) {
         NetInfo *net = ctx->nets.at(c).get();
 
diff --git a/ice40/archdefs.h b/ice40/archdefs.h
index dec6f702..8a7449a8 100644
--- a/ice40/archdefs.h
+++ b/ice40/archdefs.h
@@ -29,9 +29,14 @@ struct DelayInfo
 {
     delay_t delay = 0;
 
-    delay_t raiseDelay() const { return delay; }
-    delay_t fallDelay() const { return delay; }
-    delay_t avgDelay() const { return delay; }
+    delay_t minRaiseDelay() const { return delay; }
+    delay_t maxRaiseDelay() const { return delay; }
+
+    delay_t minFallDelay() const { return delay; }
+    delay_t maxFallDelay() const { return delay; }
+
+    delay_t minDelay() const { return delay; }
+    delay_t maxDelay() const { return delay; }
 
     DelayInfo operator+(const DelayInfo &other) const
     {