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BOSTON MARATHON 2023

Emily Kossmann

Bib: 24649•F

MO

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Division (F18-39)
#0 / 4884
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
32:26
Rank: #24569
Start → 5K
32:26 | 10:26/mi
10K· 6.21 mi
1:09:20
Rank: #25778 (-1209)
5K → 10K
36:54 | 11:53/mi
15K· 9.32 mi
1:49:24
Rank: #26134 (-356)
10K → 15K
40:04 | 12:54/mi
20K· 12.43 mi
2:32:46
Rank: #26319 (-185)
15K → 20K
43:22 | 13:58/mi
Half· 13.11 mi
2:41:39
Rank: #26327 (-8)
20K → Half
8:53 | 13:01/mi
25K· 15.53 mi
3:17:21
Rank: #26395 (-68)
Half → 25K
35:42 | 14:43/mi
30K· 18.64 mi
4:04:56
Rank: #26459 (-64)
25K → 30K
47:35 | 15:19/mi
20M
4:24:46
Rank: #26453 (+6)
30K → 20M
19:50 | 14:36/mi
21M
4:40:59
Rank: #26459 (-6)
20M → 21M
16:13 | 16:13/mi
35K· 21.75 mi
4:51:44
Rank: #26469 (-10)
21M → 35K
10:45 | 14:22/mi
23M
5:13:38
Rank: #26515 (-46)
35K → 23M
21:54 | 17:29/mi
24M
5:28:53
Rank: #26528 (-13)
23M → 24M
15:15 | 15:15/mi
40K· 24.85 mi
5:42:39
Rank: #26539 (-11)
24M → 40K
13:46 | 16:06/mi
25.2M
5:49:03
Rank: #26553 (-14)
40K → 25.2M
6:24 | 18:33/mi
Finish· 26.22 mi
6:03:49
Rank: #26564 (-11)
25.2M → Finish
14:46 | 14:29/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:41:39
Pace12:20 /mi
2nd Half
Distance13.11 mi
Time3:22:10
Pace15:25 /mi
📊Positive Split: 25.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:3632:2610:2632:26
10:26
-
10K
6.21 mi12:24:301:09:2011:0936:54
11:53
+1:27
15K
9.32 mi13:04:341:49:2411:4440:04
12:54
+1:01
20K
12.43 mi13:47:562:32:4612:1843:22
13:58
+1:04
Half
13.11 mi13:56:492:41:3912:208:53
13:01
-0:57
25K
15.53 mi14:32:313:17:2112:4235:42
14:43
+1:42
30K
18.64 mi15:20:064:04:5613:0847:35
15:19
+0:36
20M
20.00 mi15:39:564:24:4613:1419:50
14:36
-0:43
21M
21.00 mi15:56:094:40:5913:2316:13
16:13
+1:37
35K
21.75 mi16:06:544:51:4413:2510:45
14:22
-1:51
23M
23.00 mi16:28:485:13:3813:3821:54
17:29
+3:07
24M
24.00 mi16:44:035:28:5313:4215:15
15:15
-2:14
40K
24.85 mi16:57:495:42:3913:4713:46
16:06
+0:51
25.2M
25.20 mi17:04:135:49:0313:516:24
18:33
+2:27
Finish
26.22 mi17:18:596:03:4913:5314:46
14:29
-4:04

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

10:26 /mi

Average Pace

13:53 /mi

Slowest Pace

18:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:58:17

33% of race

Time at Steady Pace

3:07:15

51% of race

Time at Slower Pace

58:17

16% of race

Average Pace: 13:53 /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.

Loading...
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 mi11:47:3632:2610:2632:26
10:26
#24569
10K
6.21 mi12:24:301:09:2011:0936:54
11:53
#25778
15K
9.32 mi13:04:341:49:2411:4440:04
12:54
#26134
20K
12.43 mi13:47:562:32:4612:1843:22
13:58
#26319
Half
13.11 mi13:56:492:41:3912:208:53
13:01
#26327
25K
15.53 mi14:32:313:17:2112:4235:42
14:43
#26395
30K
18.64 mi15:20:064:04:5613:0847:35
15:19
#26459
20M
20.00 mi15:39:564:24:4613:1419:50
14:36
#26453
21M
21.00 mi15:56:094:40:5913:2316:13
16:13
#26459
35K
21.75 mi16:06:544:51:4413:2510:45
14:22
#26469
23M
23.00 mi16:28:485:13:3813:3821:54
17:29
#26515
24M
24.00 mi16:44:035:28:5313:4215:15
15:15
#26528
40K
24.85 mi16:57:495:42:3913:4713:46
16:06
#26539
25.2M
25.20 mi17:04:135:49:0313:516:24
18:33
#26553
Finish
26.22 mi17:18:596:03:4913:5314:46
14:29
#26564
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi24569102001020026455(Top 99%)11334(Top 99%)11334(Top 232%)
10K6.21 mi3.10 mi25778-120910910-71010910-71026213(Top 98%)11178(Top 98%)11178(Top 229%)
15K9.32 mi3.11 mi26134-35611123-21311123-21326455(Top 99%)11334(Top 99%)11334(Top 232%)
20K12.43 mi3.11 mi26319-18511239-11611239-11626517(Top 100%)11365(Top 99%)11365(Top 233%)
Half13.11 mi0.68 mi26327-811242-311242-326364(Top 99%)11285(Top 99%)11285(Top 231%)
25K15.53 mi2.42 mi26395-6811287-4511287-4526513(Top 100%)11363(Top 99%)11363(Top 233%)
30K18.64 mi3.11 mi26459-6411328-4111328-4126499(Top 100%)11360(Top 99%)11360(Top 233%)
20M20.00 mi1.36 mi26453+611326+211326+226148(Top 98%)11203(Top 98%)11203(Top 229%)
21M21.00 mi1.00 mi26459-611329-311329-326281(Top 99%)11262(Top 99%)11262(Top 231%)
35K21.75 mi0.75 mi26469-1011334-511334-526263(Top 99%)11258(Top 99%)11258(Top 231%)
23M23.00 mi1.25 mi26515-4611366-3211366-3226574(Top 100%)11405(Top 100%)11405(Top 234%)
24M24.00 mi1.00 mi26528-1311374-811374-826440(Top 99%)11351(Top 99%)11351(Top 232%)
40K24.85 mi0.85 mi26539-1111382-811382-826433(Top 99%)11353(Top 99%)11353(Top 232%)
25.2M25.20 mi0.35 mi26553-1411390-811390-826543(Top 100%)11393(Top 100%)11393(Top 233%)
Finish26.22 mi1.02 mi26564-1111396-611396-626446(Top 99%)11363(Top 99%)11363(Top 233%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 99%
×21stories
+97ft-345ft

Overall

26455

Females

11334

F18-39

11334

5K→10K

3.1 - 6.2 mi

Top 98%
×5stories
+79ft-138ft

Overall

26213

Females

11178

F18-39

11178

10K→15K

6.2 - 9.3 mi

Top 99%
×3stories
+67ft-78ft

Overall

26455

Females

11334

F18-39

11334

15K→20K

9.3 - 12.4 mi

Top 100%
×5stories
+106ft-86ft

Overall

26517

Females

11365

F18-39

11365

20K→Half

12.4 - 13.1 mi

Top 99%
×2stories
+19ft-37ft

Overall

26364

Females

11285

F18-39

11285

Half→25K

13.1 - 15.5 mi

Top 100%
×4stories
+66ft-88ft

Overall

26513

Females

11363

F18-39

11363

25K→30K

15.5 - 18.6 mi

Top 100%
×9stories
+181ft-148ft

Overall

26499

Females

11360

F18-39

11360

30K→20M

18.6 - 20.0 mi

Top 98%
×5stories
+64ft-50ft

Overall

26148

Females

11203

F18-39

11203

20M→21M

20.0 - 21.0 mi

Top 99%
×8stories
+106ft-24ft

Overall

26281

Females

11262

F18-39

11262

21M→35K

21.0 - 21.8 mi

Top 99%
×7stories
+17ft-86ft

Overall

26263

Females

11258

F18-39

11258

35K→23M

21.8 - 23.0 mi

Top 100%
×5stories
+23ft-63ft

Overall

26574

Females

11405

F18-39

11405

23M→24M

23.0 - 24.0 mi

Top 99%
×6stories
+12ft-82ft

Overall

26440

Females

11351

F18-39

11351

24M→40K

24.0 - 24.9 mi

Top 99%
×1story
+6ft-20ft

Overall

26433

Females

11353

F18-39

11353

40K→25.2M

24.9 - 25.2 mi

Top 100%
×1story
+13ft-16ft

Overall

26543

Females

11393

F18-39

11393

25.2M→Finish

25.2 - 26.2 mi

Top 99%
×2stories
+22ft-21ft

Overall

26446

Females

11363

F18-39

11363

Passing Analysis

Category:
Athletes Passed
59
Passed By
2054
Net Change
-1995
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24569
5K → 10K21211-1209#24569#25778
10K → 15K3359-356#25778#26134
15K → 20K8193-185#26134#26319
20K → Half715-8#26319#26327
Half → 25K674-68#26327#26395
25K → 30K872-64#26395#26459
30K → 20M1610+6#26459#26453
20M → 21M39-6#26453#26459
21M → 35K212-10#26459#26469
35K → 23M046-46#26469#26515
23M → 24M215-13#26515#26528
24M → 40K011-11#26528#26539
40K → 25.2M014-14#26539#26553
25.2M → Finish213-11#26553#26564
TOTALS592054-1995
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing