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BOSTON MARATHON 2023

Karalyn Spadaro

Bib: 18135•F

MA

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
7:53/mi
24:30
↑ 97↓ 3451.5%
10K· 6.21 mi
7:54/mi
49:04
↑ 79↓ 1380.4%
15K· 9.32 mi
7:56/mi
1:13:43
↑ 67↓ 78
20K· 12.43 mi
7:50/mi
1:38:04
↑ 106↓ 860.1%
Half· 13.11 mi
7:37/mi
1:43:16
↑ 19↓ 370.5%
25K· 15.53 mi
7:49/mi
2:02:13
↑ 66↓ 880.2%
30K· 18.64 mi
7:51/mi
2:26:37
↑ 181↓ 1480.2%
20M
7:50/mi
2:37:16
↑ 64↓ 500.2%
21M
8:10/mi
2:45:26
↑ 106↓ 241.6%
35K· 21.75 mi
7:25/mi
2:50:59
↑ 17↓ 861.7%
23M
7:39/mi
3:00:34
↑ 23↓ 630.6%
24M
7:27/mi
3:08:01
↓ 821.3%
40K· 24.85 mi
7:44/mi
3:14:38
↓ 200.3%
25.2M
8:19/mi
3:17:30
↑ 13↓ 160.2%
Finish· 26.22 mi
7:29/mi
3:25:08
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:43:16
Pace7:53 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:41:52
Pace7:46 /mi
📊Negative Split: 1.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:3424:307:5324:30
7:53
-
10K
6.21 mi11:41:0849:047:5424:34
7:54
+0:01
15K
9.32 mi12:05:471:13:437:5524:39
7:56
+0:02
20K
12.43 mi12:30:081:38:047:5324:21
7:50
-0:06
Half
13.11 mi12:35:201:43:167:535:12
7:37
-0:13
25K
15.53 mi12:54:172:02:137:5218:57
7:49
+0:12
30K
18.64 mi13:18:412:26:377:5224:24
7:51
+0:02
20M
20.00 mi13:29:202:37:167:5210:39
7:50
-0:01
21M
21.00 mi13:37:302:45:267:538:10
8:10
+0:20
35K
21.75 mi13:43:032:50:597:525:33
7:25
-0:45
23M
23.00 mi13:52:383:00:347:519:35
7:39
+0:14
24M
24.00 mi14:00:053:08:017:507:27
7:27
-0:12
40K
24.85 mi14:06:423:14:387:506:37
7:44
+0:17
25.2M
25.20 mi14:09:343:17:307:502:52
8:19
+0:35
Finish
26.22 mi14:17:123:25:087:507:38
7:29
-0:50

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

7:25 /mi

Average Pace

7:50 /mi

Slowest Pace

8:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:14:06

95% of race

Time at Steady Pace

11:02

5% of race

Time at Slower Pace

0:00

0% 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 mi11:16:3424:307:5324:30
7:53
#13125
10K
6.21 mi11:41:0849:047:5424:34
7:54
#13562
15K
9.32 mi12:05:471:13:437:5524:39
7:56
#13646
20K
12.43 mi12:30:081:38:047:5324:21
7:50
#13236
Half
13.11 mi12:35:201:43:167:535:12
7:37
#13103
25K
15.53 mi12:54:172:02:137:5218:57
7:49
#12761
30K
18.64 mi13:18:412:26:377:5224:24
7:51
#12169
20M
20.00 mi13:29:202:37:167:5210:39
7:50
#11897
21M
21.00 mi13:37:302:45:267:538:10
8:10
#11672
35K
21.75 mi13:43:032:50:597:525:33
7:25
#11500
23M
23.00 mi13:52:383:00:347:519:35
7:39
#11212
24M
24.00 mi14:00:053:08:017:507:27
7:27
#11017
40K
24.85 mi14:06:423:14:387:506:37
7:44
#10882
25.2M
25.20 mi14:09:343:17:307:502:52
8:19
#10831
Finish
26.22 mi14:17:123:25:087:507:38
7:29
#10694
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi131253510351013854(Top 52%)3994(Top 35%)3994(Top 82%)
10K6.21 mi3.10 mi13562-4373776-2663776-26614047(Top 53%)4071(Top 36%)4071(Top 83%)
15K9.32 mi3.11 mi13646-843847-713847-7113854(Top 52%)3994(Top 35%)3994(Top 82%)
20K12.43 mi3.11 mi13236+4103626+2213626+22112050(Top 45%)2993(Top 26%)2993(Top 61%)
Half13.11 mi0.68 mi13103+1333543+833543+8311264(Top 42%)2495(Top 22%)2495(Top 51%)
25K15.53 mi2.42 mi12761+3423373+1703373+17011231(Top 42%)2607(Top 23%)2607(Top 53%)
30K18.64 mi3.11 mi12169+5923073+3003073+3009783(Top 37%)2060(Top 18%)2060(Top 42%)
20M20.00 mi1.36 mi11897+2722935+1382935+1389175(Top 34%)1878(Top 16%)1878(Top 38%)
21M21.00 mi1.00 mi11672+2252826+1092826+1098459(Top 32%)1714(Top 15%)1714(Top 35%)
35K21.75 mi0.75 mi11500+1722749+772749+778007(Top 30%)1514(Top 13%)1514(Top 31%)
23M23.00 mi1.25 mi11212+2882609+1402609+1407493(Top 28%)1380(Top 12%)1380(Top 28%)
24M24.00 mi1.00 mi11017+1952535+742535+747411(Top 28%)1458(Top 13%)1458(Top 30%)
40K24.85 mi0.85 mi10882+1352494+412494+418290(Top 31%)1872(Top 16%)1872(Top 38%)
25.2M25.20 mi0.35 mi10831+512482+122482+128482(Top 32%)2033(Top 18%)2033(Top 42%)
Finish26.22 mi1.02 mi10694+1372441+412441+418516(Top 32%)2037(Top 18%)2037(Top 42%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21story building
+97ft-345ft

Overall

13854

Females

3994

F18-39

3994

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

14047

Females

4071

F18-39

4071

10K→15K

6.2 - 9.3 mi

Top 52%
×3story building
+67ft-78ft

Overall

13854

Females

3994

F18-39

3994

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

12050

Females

2993

F18-39

2993

20K→Half

12.4 - 13.1 mi

Top 42%
×2story building
+19ft-37ft

Overall

11264

Females

2495

F18-39

2495

Half→25K

13.1 - 15.5 mi

Top 42%
×4story building
+66ft-88ft

Overall

11231

Females

2607

F18-39

2607

25K→30K

15.5 - 18.6 mi

Top 37%
×9story building
+181ft-148ft

Overall

9783

Females

2060

F18-39

2060

30K→20M

18.6 - 20.0 mi

Top 34%
×5story building
+64ft-50ft

Overall

9175

Females

1878

F18-39

1878

20M→21M

20.0 - 21.0 mi

Top 32%
×8story building
+106ft-24ft

Overall

8459

Females

1714

F18-39

1714

21M→35K

21.0 - 21.8 mi

Top 30%
×7story building
+17ft-86ft

Overall

8007

Females

1514

F18-39

1514

35K→23M

21.8 - 23.0 mi

Top 28%
×5story building
+23ft-63ft

Overall

7493

Females

1380

F18-39

1380

23M→24M

23.0 - 24.0 mi

Top 28%
×6story building
+12ft-82ft

Overall

7411

Females

1458

F18-39

1458

24M→40K

24.0 - 24.9 mi

Top 31%
×1story
+6ft-20ft

Overall

8290

Females

1872

F18-39

1872

40K→25.2M

24.9 - 25.2 mi

Top 32%
×1story
+13ft-16ft

Overall

8482

Females

2033

F18-39

2033

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2story building
+22ft-21ft

Overall

8516

Females

2037

F18-39

2037

Passing Analysis

Category:
Athletes Passed
3375
Passed By
944
Net Change
+2431
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13125
5K → 10K143580-437#13125#13562
10K → 15K155239-84#13562#13646
15K → 20K43727+410#13646#13236
20K → Half1330+133#13236#13103
Half → 25K35311+342#13103#12761
25K → 30K5986+592#12761#12169
30K → 20M2819+272#12169#11897
20M → 21M2349+225#11897#11672
21M → 35K1753+172#11672#11500
35K → 23M2957+288#11500#11212
23M → 24M20510+195#11212#11017
24M → 40K1449+135#11017#10882
40K → 25.2M6110+51#10882#10831
25.2M → Finish16124+137#10831#10694
TOTALS3375944+2431
📊

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