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BOSTON MARATHON 2023

Anna Kosova

Bib: 11525•F

CA

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 34%
Gender (Female)
#0 / 11423
Top 14%
Division (F18-39)
#0 / 4884
Top 26%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:49
Rank: #6405
Start → 5K
21:49 | 7:01/mi
10K· 6.21 mi
43:38
Rank: #6640 (-235)
5K → 10K
21:49 | 7:01/mi
15K· 9.32 mi
1:05:56
Rank: #6947 (-307)
10K → 15K
22:18 | 7:11/mi
20K· 12.43 mi
1:29:02
Rank: #7308 (-361)
15K → 20K
23:06 | 7:26/mi
Half· 13.11 mi
1:34:00
Rank: #7354 (-46)
20K → Half
4:58 | 7:17/mi
25K· 15.53 mi
1:53:05
Rank: #7931 (-577)
Half → 25K
19:05 | 7:52/mi
30K· 18.64 mi
2:18:13
Rank: #8478 (-547)
25K → 30K
25:08 | 8:05/mi
20M
2:29:01
Rank: #8560 (-82)
30K → 20M
10:48 | 7:57/mi
21M
2:37:32
Rank: #8656 (-96)
20M → 21M
8:31 | 8:31/mi
35K· 21.75 mi
2:43:20
Rank: #8713 (-57)
21M → 35K
5:48 | 7:45/mi
23M
2:53:37
Rank: #8847 (-134)
35K → 23M
10:17 | 8:13/mi
24M
3:01:47
Rank: #8980 (-133)
23M → 24M
8:10 | 8:10/mi
40K· 24.85 mi
3:08:38
Rank: #9001 (-21)
24M → 40K
6:51 | 8:01/mi
25.2M
3:11:35
Rank: #8998 (+3)
40K → 25.2M
2:57 | 8:33/mi
Finish· 26.22 mi
3:19:18
Rank: #8978 (+20)
25.2M → Finish
7:43 | 7:34/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:00
Pace7:10 /mi
2nd Half
Distance13.11 mi
Time1:45:18
Pace8:02 /mi
📊Positive Split: 12.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:4921:497:0121:49
7:01
-
10K
6.21 mi11:10:3843:387:0121:49
7:01
0:00
15K
9.32 mi11:32:561:05:567:0422:18
7:11
+0:10
20K
12.43 mi11:56:021:29:027:1023:06
7:26
+0:15
Half
13.11 mi12:01:001:34:007:104:58
7:17
-0:09
25K
15.53 mi12:20:051:53:057:1719:05
7:52
+0:35
30K
18.64 mi12:45:132:18:137:2525:08
8:05
+0:13
20M
20.00 mi12:56:012:29:017:2710:48
7:57
-0:08
21M
21.00 mi13:04:322:37:327:308:31
8:31
+0:34
35K
21.75 mi13:10:202:43:207:315:48
7:45
-0:46
23M
23.00 mi13:20:372:53:377:3310:17
8:13
+0:28
24M
24.00 mi13:28:473:01:477:348:10
8:10
-0:03
40K
24.85 mi13:35:383:08:387:356:51
8:01
-0:09
25.2M
25.20 mi13:38:353:11:357:362:57
8:33
+0:32
Finish
26.22 mi13:46:183:19:187:367:43
7:34
-0:59

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

7:01 /mi

Average Pace

7:36 /mi

Slowest Pace

8:33 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:41:43

51% of race

Time at Steady Pace

1:07:40

34% of race

Time at Slower Pace

29:55

15% of race

Average Pace: 7:36 /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 mi10:48:4921:497:0121:49
7:01
#6405
10K
6.21 mi11:10:3843:387:0121:49
7:01
#6640
15K
9.32 mi11:32:561:05:567:0422:18
7:11
#6947
20K
12.43 mi11:56:021:29:027:1023:06
7:26
#7308
Half
13.11 mi12:01:001:34:007:104:58
7:17
#7354
25K
15.53 mi12:20:051:53:057:1719:05
7:52
#7931
30K
18.64 mi12:45:132:18:137:2525:08
8:05
#8478
20M
20.00 mi12:56:012:29:017:2710:48
7:57
#8560
21M
21.00 mi13:04:322:37:327:308:31
8:31
#8656
35K
21.75 mi13:10:202:43:207:315:48
7:45
#8713
23M
23.00 mi13:20:372:53:377:3310:17
8:13
#8847
24M
24.00 mi13:28:473:01:477:348:10
8:10
#8980
40K
24.85 mi13:35:383:08:387:356:51
8:01
#9001
25.2M
25.20 mi13:38:353:11:357:362:57
8:33
#8998
Finish
26.22 mi13:46:183:19:187:367:43
7:34
#8978
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi64055865867668(Top 29%)960(Top 8%)960(Top 20%)
10K6.21 mi3.10 mi6640-235646-60646-606986(Top 26%)747(Top 7%)747(Top 15%)
15K9.32 mi3.11 mi6947-307723-77723-777668(Top 29%)960(Top 8%)960(Top 20%)
20K12.43 mi3.11 mi7308-361829-106829-1068808(Top 33%)1414(Top 12%)1414(Top 29%)
Half13.11 mi0.68 mi7354-46839-10839-108524(Top 32%)1303(Top 11%)1303(Top 27%)
25K15.53 mi2.42 mi7931-5771051-2121051-21211690(Top 44%)2883(Top 25%)2883(Top 59%)
30K18.64 mi3.11 mi8478-5471293-2421293-24211575(Top 43%)2937(Top 26%)2937(Top 60%)
20M20.00 mi1.36 mi8560-821339-461339-469901(Top 37%)2181(Top 19%)2181(Top 45%)
21M21.00 mi1.00 mi8656-961395-561395-5610585(Top 40%)2658(Top 23%)2658(Top 54%)
35K21.75 mi0.75 mi8713-571428-331428-3310308(Top 39%)2497(Top 22%)2497(Top 51%)
23M23.00 mi1.25 mi8847-1341508-801508-8011277(Top 42%)3138(Top 27%)3138(Top 64%)
24M24.00 mi1.00 mi8980-1331589-811589-8112380(Top 47%)3777(Top 33%)3777(Top 77%)
40K24.85 mi0.85 mi9001-211612-231612-2310142(Top 38%)2714(Top 24%)2714(Top 56%)
25.2M25.20 mi0.35 mi8998+31618-61618-69903(Top 37%)2619(Top 23%)2619(Top 54%)
Finish26.22 mi1.02 mi8978+201634-161634-169117(Top 34%)2287(Top 20%)2287(Top 47%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21stories
+97ft-345ft

Overall

7668

Females

960

F18-39

960

5K→10K

3.1 - 6.2 mi

Top 26%
×5stories
+79ft-138ft

Overall

6986

Females

747

F18-39

747

10K→15K

6.2 - 9.3 mi

Top 29%
×3stories
+67ft-78ft

Overall

7668

Females

960

F18-39

960

15K→20K

9.3 - 12.4 mi

Top 33%
×5stories
+106ft-86ft

Overall

8808

Females

1414

F18-39

1414

20K→Half

12.4 - 13.1 mi

Top 32%
×2stories
+19ft-37ft

Overall

8524

Females

1303

F18-39

1303

Half→25K

13.1 - 15.5 mi

Top 44%
×4stories
+66ft-88ft

Overall

11690

Females

2883

F18-39

2883

25K→30K

15.5 - 18.6 mi

Top 43%
×9stories
+181ft-148ft

Overall

11575

Females

2937

F18-39

2937

30K→20M

18.6 - 20.0 mi

Top 37%
×5stories
+64ft-50ft

Overall

9901

Females

2181

F18-39

2181

20M→21M

20.0 - 21.0 mi

Top 40%
×8stories
+106ft-24ft

Overall

10585

Females

2658

F18-39

2658

21M→35K

21.0 - 21.8 mi

Top 39%
×7stories
+17ft-86ft

Overall

10308

Females

2497

F18-39

2497

35K→23M

21.8 - 23.0 mi

Top 42%
×5stories
+23ft-63ft

Overall

11277

Females

3138

F18-39

3138

23M→24M

23.0 - 24.0 mi

Top 47%
×6stories
+12ft-82ft

Overall

12380

Females

3777

F18-39

3777

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

10142

Females

2714

F18-39

2714

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

9903

Females

2619

F18-39

2619

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2stories
+22ft-21ft

Overall

9117

Females

2287

F18-39

2287

Passing Analysis

Category:
Athletes Passed
579
Passed By
3152
Net Change
-2573
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6405
5K → 10K100335-235#6405#6640
10K → 15K39346-307#6640#6947
15K → 20K33394-361#6947#7308
20K → Half1056-46#7308#7354
Half → 25K12589-577#7354#7931
25K → 30K38585-547#7931#8478
30K → 20M56138-82#8478#8560
20M → 21M45141-96#8560#8656
21M → 35K2885-57#8656#8713
35K → 23M41175-134#8713#8847
23M → 24M37170-133#8847#8980
24M → 40K4061-21#8980#9001
40K → 25.2M2825+3#9001#8998
25.2M → Finish7252+20#8998#8978
TOTALS5793152-2573
📊

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