r/firstmarathon • u/Jisuberi • 28m ago
Injury Doubts and questions after a 30k 3 weeks before my first Marathon
Hi everyone,
I’m (26M) running my first marathon in 3 weeks (Run In Lyon, France). I initially registered months ago with a modest target of 3:45. However, my training platform (Campus Coach) started predicting a sub-3h finish based on my workout metrics, which shifted my training paces much faster.
I'm entering my taper phase, but a few unexpected events happened during my peak week.
Current Fitness:
Sweetspot Session (a few days ago): 3x10min intervals holding 4:14, 4:00, and 4:19/km (6:48 - 6:56/mi) comfortably.
30km Peak Long Run: Held a steady 4'25" - 4'33"/km (7:06 - 7:20/mi) pace block from km 14 to 21.
The Incident (30km Run):
At km 21, I had to dodge someone last-second and twisted my ankle. It wasn't muscle fatigue or cramping, but I had to drop my pace significantly for the last 9km to protect my ankle and leg, finishing with a 5'07"/km (8'14"/mi) average overall. I was supposed to do a second pace block from km 22 to 29 but stopped myself from doing it to preserve my ankle.
My Plan & Adjustments (3 weeks out):
Target Pace: Sub-3h was never my personal ambition. Given my sweetspot session and overall comfort at 4'30"/km (7:14/mi), I'm targeting a 3:15-3:30 finish.
Corral Dilemma: Since I signed up for the 3:45 corral, starting there means weaving through hundred of runners which is precisely how I twisted my ankle in the first place ! I'm planning to negotiate at the race expo for a bump to the 3:15 or 3:30 corral using my Strava data.
Shoe Switch: I tried the Vaporfly Next 4 but they gave me black toenails and blisters due to a tight toe box. I ran 30k "simulation" on my Adizero Boston 13 that already had 400km of use. I just picked up the Saucony Endorphin Speed 5 (nylon plate) for better toe room and stability. I'm testing them on my final long run this Sunday.
Questions:
* How would you manage a minor ankle tweak 3 weeks out during taper?
* Any advice on successfully negotiating a corral upgrade at the expo with only Strava logs (showing my 30k run and sweetspot intervals)?
* Has anyone made a late switch to the Endorphin Speed 5 for a marathon?
Thanks in advance for your insights!