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BOSTON MARATHON 2023

Caroline Spicer

Bib: 25039•F

NH

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

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
10:48/mi
33:34
↑ 97↓ 3451.5%
10K· 6.21 mi
10:55/mi
1:07:28
↑ 79↓ 1380.4%
15K· 9.32 mi
10:41/mi
1:40:39
↑ 67↓ 78
20K· 12.43 mi
10:52/mi
2:14:25
↑ 106↓ 860.1%
Half· 13.11 mi
10:29/mi
2:21:34
↑ 19↓ 370.5%
25K· 15.53 mi
11:07/mi
2:48:30
↑ 66↓ 880.2%
30K· 18.64 mi
11:52/mi
3:25:23
↑ 181↓ 1480.2%
20M
11:26/mi
3:40:55
↑ 64↓ 500.2%
21M
12:01/mi
3:52:56
↑ 106↓ 241.6%
35K· 21.75 mi
11:18/mi
4:01:23
↑ 17↓ 861.7%
23M
11:25/mi
4:15:41
↑ 23↓ 630.6%
24M
11:29/mi
4:27:10
↓ 821.3%
40K· 24.85 mi
11:36/mi
4:37:05
↓ 200.3%
25.2M
12:11/mi
4:41:17
↑ 13↓ 160.2%
Finish· 26.22 mi
10:31/mi
4:52:00
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:21:34
Pace10:48 /mi
2nd Half
Distance13.11 mi
Time2:30:26
Pace11:29 /mi
📊Positive Split: 6.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:0933:3410:4833:34
10:48
-
10K
6.21 mi12:24:031:07:2810:5133:54
10:55
+0:07
15K
9.32 mi12:57:141:40:3910:4833:11
10:41
-0:14
20K
12.43 mi13:31:002:14:2510:4933:46
10:52
+0:11
Half
13.11 mi13:38:092:21:3410:487:09
10:29
-0:23
25K
15.53 mi14:05:052:48:3010:5126:56
11:07
+0:38
30K
18.64 mi14:41:583:25:2311:0136:53
11:52
+0:45
20M
20.00 mi14:57:303:40:5511:0315:32
11:26
-0:26
21M
21.00 mi15:09:313:52:5611:0612:01
12:01
+0:35
35K
21.75 mi15:17:584:01:2311:068:27
11:18
-0:43
23M
23.00 mi15:32:164:15:4111:0714:18
11:25
+0:07
24M
24.00 mi15:43:454:27:1011:0811:29
11:29
+0:04
40K
24.85 mi15:53:404:37:0511:099:55
11:36
+0:07
25.2M
25.20 mi15:57:524:41:1711:104:12
12:11
+0:35
Finish
26.22 mi16:08:354:52:0011:0910:43
10:31
-1:40

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

10:29 /mi

Average Pace

11:09 /mi

Slowest Pace

12:11 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:48:59

78% of race

Time at Steady Pace

1:03:01

22% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 11:08 /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 mi11:50:0933:3410:4833:34
10:48
#25374
10K
6.21 mi12:24:031:07:2810:5133:54
10:55
#25371
15K
9.32 mi12:57:141:40:3910:4833:11
10:41
#25141
20K
12.43 mi13:31:002:14:2510:4933:46
10:52
#24940
Half
13.11 mi13:38:092:21:3410:487:09
10:29
#24906
25K
15.53 mi14:05:052:48:3010:5126:56
11:07
#24774
30K
18.64 mi14:41:583:25:2311:0136:53
11:52
#24707
20M
20.00 mi14:57:303:40:5511:0315:32
11:26
#24600
21M
21.00 mi15:09:313:52:5611:0612:01
12:01
#24512
35K
21.75 mi15:17:584:01:2311:068:27
11:18
#24485
23M
23.00 mi15:32:164:15:4111:0714:18
11:25
#24403
24M
24.00 mi15:43:454:27:1011:0811:29
11:29
#24392
40K
24.85 mi15:53:404:37:0511:099:55
11:36
#24372
25.2M
25.20 mi15:57:524:41:1711:104:12
12:11
#24346
Finish
26.22 mi16:08:354:52:0011:0910:43
10:31
#24316
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25374106591065924776(Top 93%)10337(Top 90%)10337(Top 212%)
10K6.21 mi3.10 mi25371+310647+1210647+1225359(Top 95%)10642(Top 93%)10642(Top 218%)
15K9.32 mi3.11 mi25141+23010521+12610521+12624776(Top 93%)10337(Top 90%)10337(Top 212%)
20K12.43 mi3.11 mi24940+20110423+9810423+9824426(Top 92%)10162(Top 89%)10162(Top 208%)
Half13.11 mi0.68 mi24906+3410406+1710406+1724198(Top 91%)10035(Top 88%)10035(Top 205%)
25K15.53 mi2.42 mi24774+13210344+6210344+6224143(Top 91%)10027(Top 88%)10027(Top 205%)
30K18.64 mi3.11 mi24707+6710318+2610318+2624350(Top 91%)10191(Top 89%)10191(Top 209%)
20M20.00 mi1.36 mi24600+10710271+4710271+4723421(Top 88%)9749(Top 85%)9749(Top 200%)
21M21.00 mi1.00 mi24512+8810223+4810223+4822791(Top 86%)9438(Top 83%)9438(Top 193%)
35K21.75 mi0.75 mi24485+2710214+910214+923803(Top 89%)10041(Top 88%)10041(Top 206%)
23M23.00 mi1.25 mi24403+8210181+3310181+3323123(Top 87%)9656(Top 85%)9656(Top 198%)
24M24.00 mi1.00 mi24392+1110189-810189-823850(Top 90%)10079(Top 88%)10079(Top 206%)
40K24.85 mi0.85 mi24372+2010181+810181+823365(Top 88%)9861(Top 86%)9861(Top 202%)
25.2M25.20 mi0.35 mi24346+2610168+1310168+1322836(Top 86%)9574(Top 84%)9574(Top 196%)
Finish26.22 mi1.02 mi24316+3010158+1010158+1023046(Top 87%)9672(Top 85%)9672(Top 198%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 93%
×21story building
+97ft-345ft

Overall

24776

Females

10337

F18-39

10337

5K→10K

3.1 - 6.2 mi

Top 95%
×5story building
+79ft-138ft

Overall

25359

Females

10642

F18-39

10642

10K→15K

6.2 - 9.3 mi

Top 93%
×3story building
+67ft-78ft

Overall

24776

Females

10337

F18-39

10337

15K→20K

9.3 - 12.4 mi

Top 92%
×5story building
+106ft-86ft

Overall

24426

Females

10162

F18-39

10162

20K→Half

12.4 - 13.1 mi

Top 91%
×2story building
+19ft-37ft

Overall

24198

Females

10035

F18-39

10035

Half→25K

13.1 - 15.5 mi

Top 91%
×4story building
+66ft-88ft

Overall

24143

Females

10027

F18-39

10027

25K→30K

15.5 - 18.6 mi

Top 91%
×9story building
+181ft-148ft

Overall

24350

Females

10191

F18-39

10191

30K→20M

18.6 - 20.0 mi

Top 88%
×5story building
+64ft-50ft

Overall

23421

Females

9749

F18-39

9749

20M→21M

20.0 - 21.0 mi

Top 86%
×8story building
+106ft-24ft

Overall

22791

Females

9438

F18-39

9438

21M→35K

21.0 - 21.8 mi

Top 89%
×7story building
+17ft-86ft

Overall

23803

Females

10041

F18-39

10041

35K→23M

21.8 - 23.0 mi

Top 87%
×5story building
+23ft-63ft

Overall

23123

Females

9656

F18-39

9656

23M→24M

23.0 - 24.0 mi

Top 90%
×6story building
+12ft-82ft

Overall

23850

Females

10079

F18-39

10079

24M→40K

24.0 - 24.9 mi

Top 88%
×1story
+6ft-20ft

Overall

23365

Females

9861

F18-39

9861

40K→25.2M

24.9 - 25.2 mi

Top 86%
×1story
+13ft-16ft

Overall

22836

Females

9574

F18-39

9574

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2story building
+22ft-21ft

Overall

23046

Females

9672

F18-39

9672

Passing Analysis

Category:
Athletes Passed
1408
Passed By
350
Net Change
+1058
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25374
5K → 10K157154+3#25374#25371
10K → 15K24717+230#25371#25141
15K → 20K22726+201#25141#24940
20K → Half340+34#24940#24906
Half → 25K14816+132#24906#24774
25K → 30K12255+67#24774#24707
30K → 20M1147+107#24707#24600
20M → 21M935+88#24600#24512
21M → 35K369+27#24512#24485
35K → 23M908+82#24485#24403
23M → 24M3524+11#24403#24392
24M → 40K3717+20#24392#24372
40K → 25.2M282+26#24372#24346
25.2M → Finish4010+30#24346#24316
TOTALS1408350+1058
📊

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