Spartan Race is running an offer code for 10% Off w/ Promo Code on Your Next Purchase at Spartan Race (Site-Wide), redeemable at their site. Click the blue button to reveal and copy this discount code. Enter this code in the promo code entry box during checkout at spartan.com. Your discount should be applied.
Tough Mudder has an offer code available for 15% Off All Tough Mudder 5k & Classic Events. Click the blue button to copy this promo code to your clipboard. Then, place your items in your shopping cart at toughmudder.com. Finally, enter the code in the coupon code box during the checkout process, and your savings will be applied.