PF Chang's Rock n' Roll Marathon
Tempe Town Lake
No impact on the lake at all. However access to Boat Beach will be totally compromised because of road closures. There will be no marina access impact, but look at the road closure grid to be sure your route to the marina is clear. The highway to the 202 will be your best marina access. You can check out the road closures at: http://runrocknroll.competitor.com/arizona/road-closures
(You may have to cut and paste it though).