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MARINE CORPS MARATHON 2024

Katrina Semelroth

Chicago, IL

Bib: 6244 F

0:00
0:00
/ mi
Masters
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Overall
#0 / 15907
Gender (Female)
#0 / 5973
Masters (Masters Women)
#0 / 2230
Top 43%
Division (F40-44)
#0 / 707
Race Day Weather
43°/33°F
overcast clouds

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
27 ft elev
5K· 3.11 mi
10:46/mi
33:26
↑ 279↓ 1640.7%
140 ft elev
10K· 6.21 mi
10:06/mi
1:04:48
↑ 103↓ 2170.7%
25 ft elev
15K· 9.32 mi
10:57/mi
1:38:49
↑ 51↓ 55
21 ft elev
21K· 13.05 mi
11:54/mi
2:23:12
↑ 20↓ 37
4 ft elev
25K· 15.53 mi
10:28/mi
2:49:14
↑ 350.2%
30 ft elev
30K· 18.64 mi
12:02/mi
3:26:36
↑ 58↓ 57
30 ft elev
35K· 21.75 mi
11:14/mi
4:01:30
↑ 98↓ 92
36 ft elev
40K· 24.85 mi
11:21/mi
4:36:45
↑ 36↓ 530.1%
18 ft elev
Finish· 26.22 mi
10:07/mi
4:50:33
↑ 80↓ 240.8%
74 ft elev
Course Elevation
3–237 ft
≈
×20story building
•▲ 764 ft climb · ▼ 717 ft descent

The Course

Half Splits

1st Half· via 21K
2:23:1210:58 /mi⚡ faster
2nd Half
2:27:2111:11 /mi+2.9%
Positive split — 2.9% slower in the second half
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Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi08:46:0933:2610:4633:26
10:46
-
10K
6.21 mi09:17:311:04:4810:2631:22
10:06
-0:40
15K
9.32 mi09:51:321:38:4910:3634:01
10:57
+0:51
21K
13.05 mi10:35:552:23:1210:5844:23
11:54
+0:57
25K
15.53 mi11:01:572:49:1410:5426:02
10:28
-1:26
30K
18.64 mi11:39:193:26:3611:0537:22
12:02
+1:34
35K
21.75 mi12:14:134:01:3011:0634:54
11:14
-0:48
40K
24.85 mi12:49:284:36:4511:0835:15
11:21
+0:07
Finish
26.22 mi13:03:164:50:3311:0513:48
10:07
-1:14

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

10:06 /mi

Average Pace

11:05 /mi

Slowest Pace

12:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:18:39

48% of race

Time at Steady Pace

1:54:32

39% of race

Time at Slower Pace

37:22

13% of race

Average Pace: 11:05 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi08:46:0933:2610:4633:26
10:46
#10636
10K
6.21 mi09:17:311:04:4810:2631:22
10:06
#10386
15K
9.32 mi09:51:321:38:4910:3634:01
10:57
#10899
21K
13.05 mi10:35:552:23:1210:5844:23
11:54
#11712
25K
15.53 mi11:01:572:49:1410:5426:02
10:28
#11314
30K
18.64 mi11:39:193:26:3611:0537:22
12:02
#11218
35K
21.75 mi12:14:134:01:3011:0634:54
11:14
#10686
40K
24.85 mi12:49:284:36:4511:0835:15
11:21
#10223
Finish
26.22 mi13:03:164:50:3311:0513:48
10:07
#9949
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi106363272359118833839425
10K6.21 mi3.10 mi10386+2503148+124347+12101623064344
15K9.32 mi3.11 mi10899-5133384-236371-24118833839425
21K13.05 mi3.73 mi11712-8133774-390418-47130674442510
25K15.53 mi2.48 mi11314+3983627+147400+1897453107337
30K18.64 mi3.11 mi11218+963660-33401-1110083773412
35K21.75 mi3.11 mi10686+5323485+175385+1685692919335
40K24.85 mi3.10 mi10223+4633337+148374+1176902695308
Finish26.22 mi1.37 mi9949+2743252+85362+1254361768186

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 75%
×18story building
+279ft-164ft

Overall

11883

Females

3839

F40-44

3839

5K→10K

3.1 - 6.2 mi

Top 64%
×11story building
+103ft-217ft

Overall

10162

Females

3064

F40-44

3064

10K→15K

6.2 - 9.3 mi

Top 75%
×3story building
+51ft-55ft

Overall

11883

Females

3839

F40-44

3839

15K→21K

9.3 - 13.1 mi

Top 82%
×1story
+20ft-37ft

Overall

13067

Females

4442

F40-44

4442

21K→25K

13.1 - 15.5 mi

Top 61%
×2story building
+35ft-8ft

Overall

9745

Females

3107

F40-44

3107

25K→30K

15.5 - 18.6 mi

Top 69%
×2story building
+58ft-57ft

Overall

11008

Females

3773

F40-44

3773

30K→35K

18.6 - 21.8 mi

Top 54%
×2story building
+98ft-92ft

Overall

8569

Females

2919

F40-44

2919

35K→40K

21.8 - 24.9 mi

Top 48%
×2story building
+36ft-53ft

Overall

7690

Females

2695

F40-44

2695

40K→Finish

24.9 - 26.2 mi

Top 34%
×5story building
+80ft-24ft

Overall

5436

Females

1768

F40-44

1768

Passing Analysis

Category:
Athletes Passed
2602*
Passed By
1915
Net Change
+687
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10636
5K → 10K397*147+250#10636#10386
10K → 15K99*612-513#10386#10899
15K → 21K70*883-813#10899#11712
21K → 25K425*27+398#11712#11314
25K → 30K290*194+96#11314#11218
30K → 35K553*21+532#11218#10686
35K → 40K489*26+463#10686#10223
40K → Finish279*5+274#10223#9949
TOTALS2602*1915+687

* Includes athletes who did not complete a segment (DNF/DNQ).

Passing Charts

Category:
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Passing Circle

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Position Flow

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Race Lanes

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Public Race Data

U.S. Marine Corps Community Services (MCCS)

Timing Productions