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BOSTON MARATHON 2023

Erica Kurowski

Bib: 13180•F

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 40%
Gender (Female)
#0 / 11423
Top 21%
Division (F18-39)
#0 / 4884
Top 37%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:26/mi
23:07
↑ 97↓ 3451.5%
10K· 6.21 mi
7:26/mi
46:13
↑ 79↓ 1380.4%
15K· 9.32 mi
7:26/mi
1:09:20
↑ 67↓ 78
20K· 12.43 mi
7:27/mi
1:32:27
↑ 106↓ 860.1%
Half· 13.11 mi
7:27/mi
1:37:32
↑ 19↓ 370.5%
25K· 15.53 mi
7:36/mi
1:55:57
↑ 66↓ 880.2%
30K· 18.64 mi
7:36/mi
2:19:32
↑ 181↓ 1480.2%
20M
8:23/mi
2:30:56
↑ 64↓ 500.2%
21M
9:10/mi
2:40:06
↑ 106↓ 241.6%
35K· 21.75 mi
7:56/mi
2:46:02
↑ 17↓ 861.7%
23M
8:49/mi
2:57:04
↑ 23↓ 630.6%
24M
8:49/mi
3:05:53
↓ 821.3%
40K· 24.85 mi
8:49/mi
3:13:25
↓ 200.3%
25.2M
8:32/mi
3:16:22
↑ 13↓ 160.2%
Finish· 26.22 mi
8:32/mi
3:25:04
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:32
Pace7:26 /mi
2nd Half
Distance13.11 mi
Time1:47:32
Pace8:12 /mi
📊Positive Split: 10.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:53:1823:077:2623:07
7:26
-
10K
6.21 mi11:16:2446:137:2623:07
7:26
0:00
15K
9.32 mi11:39:311:09:207:2623:07
7:26
0:00
20K
12.43 mi12:02:381:32:277:2623:07
7:27
+0:01
Half
13.11 mi12:07:431:37:327:265:05
7:27
0:00
25K
15.53 mi12:26:081:55:577:2818:25
7:36
+0:09
30K
18.64 mi12:49:432:19:327:2923:35
7:36
0:00
20M
20.00 mi13:01:072:30:567:3311:24
8:23
+0:47
21M
21.00 mi13:10:172:40:067:379:10
9:10
+0:47
35K
21.75 mi13:16:132:46:027:385:56
7:56
-1:14
23M
23.00 mi13:27:152:57:047:4211:02
8:49
+0:53
24M
24.00 mi13:36:043:05:537:458:49
8:49
0:00
40K
24.85 mi13:43:363:13:257:477:32
8:49
0:00
25.2M
25.20 mi13:46:333:16:227:482:57
8:32
-0:17
Finish
26.22 mi13:55:153:25:047:508:42
8:32
0:00

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

7:26 /mi

Average Pace

7:50 /mi

Slowest Pace

9:10 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:19:32

68% of race

Time at Steady Pace

5:56

3% of race

Time at Slower Pace

59:36

29% of race

Average Pace: 7:49 /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 mi10:53:1823:077:2623:07
7:26
#9121
10K
6.21 mi11:16:2446:137:2623:07
7:26
#9493
15K
9.32 mi11:39:311:09:207:2623:07
7:26
#9521
20K
12.43 mi12:02:381:32:277:2623:07
7:27
#9325
Half
13.11 mi12:07:431:37:327:265:05
7:27
#9348
25K
15.53 mi12:26:081:55:577:2818:25
7:36
#9337
30K
18.64 mi12:49:432:19:327:2923:35
7:36
#9059
20M
20.00 mi13:01:072:30:567:3311:24
8:23
#9333
21M
21.00 mi13:10:172:40:067:379:10
9:10
#9636
35K
21.75 mi13:16:132:46:027:385:56
7:56
#9683
23M
23.00 mi13:27:152:57:047:4211:02
8:49
#9991
24M
24.00 mi13:36:043:05:537:458:49
8:49
#10299
40K
24.85 mi13:43:363:13:257:477:32
8:49
#10496
25.2M
25.20 mi13:46:333:16:227:482:57
8:32
#10468
Finish
26.22 mi13:55:153:25:047:508:42
8:32
#10671
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9121144314439666(Top 36%)1699(Top 15%)1699(Top 35%)
10K6.21 mi3.10 mi9493-3721610-1671610-1679953(Top 37%)1803(Top 16%)1803(Top 37%)
15K9.32 mi3.11 mi9521-281627-171627-179666(Top 36%)1699(Top 15%)1699(Top 35%)
20K12.43 mi3.11 mi9325+1961570+571570+578857(Top 33%)1434(Top 13%)1434(Top 29%)
Half13.11 mi0.68 mi9348-231576-61576-69725(Top 37%)1792(Top 16%)1792(Top 37%)
25K15.53 mi2.42 mi9337+111581-51581-59486(Top 36%)1777(Top 16%)1777(Top 36%)
30K18.64 mi3.11 mi9059+2781512+691512+697897(Top 30%)1268(Top 11%)1268(Top 26%)
20M20.00 mi1.36 mi9333-2741649-1371649-13712949(Top 49%)3818(Top 33%)3818(Top 78%)
21M21.00 mi1.00 mi9636-3031780-1311780-13114302(Top 54%)4650(Top 41%)4650(Top 95%)
35K21.75 mi0.75 mi9683-471817-371817-3711625(Top 44%)3204(Top 28%)3204(Top 66%)
23M23.00 mi1.25 mi9991-3081984-1671984-16715097(Top 57%)5243(Top 46%)5243(Top 107%)
24M24.00 mi1.00 mi10299-3082173-1892173-18916243(Top 61%)5955(Top 52%)5955(Top 122%)
40K24.85 mi0.85 mi10496-1972312-1392312-13915185(Top 57%)5414(Top 47%)5414(Top 111%)
25.2M25.20 mi0.35 mi10468+282302+102302+109726(Top 37%)2601(Top 23%)2601(Top 53%)
Finish26.22 mi1.02 mi10671-2032424-1222424-12215686(Top 59%)5653(Top 49%)5653(Top 116%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

9666

Females

1699

F18-39

1699

5K→10K

3.1 - 6.2 mi

Top 37%
×5story building
+79ft-138ft

Overall

9953

Females

1803

F18-39

1803

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

9666

Females

1699

F18-39

1699

15K→20K

9.3 - 12.4 mi

Top 33%
×5story building
+106ft-86ft

Overall

8857

Females

1434

F18-39

1434

20K→Half

12.4 - 13.1 mi

Top 37%
×2story building
+19ft-37ft

Overall

9725

Females

1792

F18-39

1792

Half→25K

13.1 - 15.5 mi

Top 36%
×4story building
+66ft-88ft

Overall

9486

Females

1777

F18-39

1777

25K→30K

15.5 - 18.6 mi

Top 30%
×9story building
+181ft-148ft

Overall

7897

Females

1268

F18-39

1268

30K→20M

18.6 - 20.0 mi

Top 49%
×5story building
+64ft-50ft

Overall

12949

Females

3818

F18-39

3818

20M→21M

20.0 - 21.0 mi

Top 54%
×8story building
+106ft-24ft

Overall

14302

Females

4650

F18-39

4650

21M→35K

21.0 - 21.8 mi

Top 44%
×7story building
+17ft-86ft

Overall

11625

Females

3204

F18-39

3204

35K→23M

21.8 - 23.0 mi

Top 57%
×5story building
+23ft-63ft

Overall

15097

Females

5243

F18-39

5243

23M→24M

23.0 - 24.0 mi

Top 61%
×6story building
+12ft-82ft

Overall

16243

Females

5955

F18-39

5955

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

15185

Females

5414

F18-39

5414

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

9726

Females

2601

F18-39

2601

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

15686

Females

5653

F18-39

5653

Passing Analysis

Category:
Athletes Passed
1235*
Passed By
2783
Net Change
-1550
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9121
5K → 10K140512-372#9121#9493
10K → 15K154182-28#9493#9521
15K → 20K25458+196#9521#9325
20K → Half2043-23#9325#9348
Half → 25K120109+11#9348#9337
25K → 30K316*38+278#9337#9059
30K → 20M23297-274#9059#9333
20M → 21M29332-303#9333#9636
21M → 35K2875-47#9636#9683
35K → 23M27335-308#9683#9991
23M → 24M21327-308#9991#10299
24M → 40K30227-197#10299#10496
40K → 25.2M4214+28#10496#10468
25.2M → Finish31234-203#10468#10671
TOTALS1235*2783-1550

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

📊

Passing Visuals

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

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing