4 laps (6.4 mi-ish). Laps are 1.6 miles-ish.

Three ways to start: MIDNIGHT (the main event), the 8AM GROUP START (the sunrise crew), or OPEN START (roll in whenever you want). Whichever you pick, your distance has to be done by 4:20PM.

8 laps (12.8 mi-ish). Laps are 1.6 miles-ish.

Three ways to start: MIDNIGHT (the main event), the 8AM GROUP START (the sunrise crew), or OPEN START (roll in whenever you want). Whichever you pick, your distance has to be done by 4:20PM.

16 laps (25.6 mi-ish). Laps are 1.6 miles-ish.

Three ways to start: MIDNIGHT (the main event), the 8AM GROUP START (the sunrise crew), or OPEN START (roll in whenever you want). Whichever you pick, your distance has to be done by 4:20PM.

19 laps (30.4 mi-ish). Laps are 1.6 miles-ish.

Three ways to start: MIDNIGHT (the main event), the 8AM GROUP START (the sunrise crew), or OPEN START (roll in whenever you want). Whichever you pick, your distance has to be done by 4:20PM.

24 laps (38.4 mi-ish). The equivalent of all 12 weeks of FSX 5ks in one day. Laps are 1.6 miles-ish.

MIDNIGHT START REQUIRED. You must be on course for a lap at 12:00AM. After that, it's your day. Finish by 4:20PM.

63 laps (100 mi-ish). Laps are 1.6 miles-ish.

MIDNIGHT START REQUIRED. You must be on course for a lap at 12:00AM. After that, it's your day. Finish by 4:20PM.

39 laps (62 mi-ish). Laps are 1.6 miles-ish.

Three ways to start: MIDNIGHT (the main event), the 8AM GROUP START (the sunrise crew), or OPEN START (roll in whenever you want). Whichever you pick, your distance has to be done by 4:20PM.

31 laps (50 mi-ish). Laps are 1.6 miles-ish.

Three ways to start: MIDNIGHT (the main event), the 8AM GROUP START (the sunrise crew), or OPEN START (roll in whenever you want). Whichever you pick, your distance has to be done by 4:20PM.

19 laps (30.4 mi-ish). Laps are 1.6 miles-ish.

Three ways to start: MIDNIGHT (the main event), the 8AM GROUP START (the sunrise crew), or OPEN START (roll in whenever you want). Whichever you pick, your distance has to be done by 4:20PM.

Run 50k-ish (19 laps) and ride 50k-ish (19 laps), in either order. We've had ONE finisher in six years. Will you be next? Laps are 1.6 miles-ish.

MIDNIGHT START REQUIRED. You must be on course for a lap at 12:00AM. After that, it's your day. Finish by 4:20PM.

Run a Half Marathon-ish (8 laps) and ride 50k-ish (19 laps), in either order. The Double Cross for mere mortals. Laps are 1.6 miles-ish.

Three ways to start: MIDNIGHT (the main event), the 8AM GROUP START (the sunrise crew), or OPEN START (roll in whenever you want). Whichever you pick, your distance has to be done by 4:20PM.

Run 50k-ish (19 laps) and ride 50 miles-ish (31 laps), in either order. About 80 miles total. Solo if you're brave, or split it as a relay team. Laps are 1.6 miles-ish.

MIDNIGHT START REQUIRED. You must be on course for a lap at 12:00AM. After that, it's your day. Finish by 4:20PM.

Inspired by the FSX Rock Monster Ultra Rock Relay in the spring. Teams of three race as one, but two members of the team have to run together every lap. The team races 19 laps total.

MIDNIGHT START REQUIRED. You must be on course for a lap at 12:00AM. After that, it's your day. Finish by 4:20PM. Part of the strategy is racing the other teams.

How far can you go from midnight to 4:20PM? Most laps wins.

Pick ONE: run or ride. No mixing, no Double Cross. Tell us which when you register. The prize gets split between the runners and the riders.

MIDNIGHT START REQUIRED. You must be on course for a lap at 12:00AM. After that, it's your day. Finish by 4:20PM. You could do a lap and then go sleep for a few hours, but you have to do at least one lap at midnight.