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BOSTON MARATHON 2023

Caroline Lee

Bib: 4142•F

TN

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 8%
Gender (Female)
#0 / 11423
Top 0.8%
Division (F18-39)
#0 / 4884
Top 2%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:30
Rank: #2861
Start → 5K
20:30 | 6:36/mi
10K· 6.21 mi
40:55
Rank: #3055 (-194)
5K → 10K
20:25 | 6:34/mi
15K· 9.32 mi
1:01:19
Rank: #3045 (+10)
10K → 15K
20:24 | 6:34/mi
20K· 12.43 mi
1:21:49
Rank: #2967 (+78)
15K → 20K
20:30 | 6:36/mi
Half· 13.11 mi
1:26:17
Rank: #2966 (+1)
20K → Half
4:28 | 6:33/mi
25K· 15.53 mi
1:42:09
Rank: #2839 (+127)
Half → 25K
15:52 | 6:33/mi
30K· 18.64 mi
2:02:35
Rank: #2614 (+225)
25K → 30K
20:26 | 6:35/mi
20M
2:11:30
Rank: #2508 (+106)
30K → 20M
8:55 | 6:34/mi
21M
2:18:21
Rank: #2423 (+85)
20M → 21M
6:51 | 6:51/mi
35K· 21.75 mi
2:23:10
Rank: #2395 (+28)
21M → 35K
4:49 | 6:26/mi
23M
2:31:29
Rank: #2351 (+44)
35K → 23M
8:19 | 6:39/mi
24M
2:37:55
Rank: #2308 (+43)
23M → 24M
6:26 | 6:26/mi
40K· 24.85 mi
2:43:29
Rank: #2254 (+54)
24M → 40K
5:34 | 6:31/mi
25.2M
2:45:56
Rank: #2233 (+21)
40K → 25.2M
2:27 | 7:06/mi
Finish· 26.22 mi
2:52:32
Rank: #2204 (+29)
25.2M → Finish
6:36 | 6:29/mi

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:26:17
Pace6:35 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:26:15
Pace6:35 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:2820:306:3620:30
6:36
-
10K
6.21 mi10:42:5340:556:3520:25
6:34
-0:02
15K
9.32 mi11:03:171:01:196:3520:24
6:34
0:00
20K
12.43 mi11:23:471:21:496:3520:30
6:36
+0:02
Half
13.11 mi11:28:151:26:176:354:28
6:33
-0:03
25K
15.53 mi11:44:071:42:096:3515:52
6:33
0:00
30K
18.64 mi12:04:332:02:356:3520:26
6:35
+0:02
20M
20.00 mi12:13:282:11:306:348:55
6:34
-0:01
21M
21.00 mi12:20:192:18:216:356:51
6:51
+0:17
35K
21.75 mi12:25:082:23:106:354:49
6:26
-0:25
23M
23.00 mi12:33:272:31:296:358:19
6:39
+0:13
24M
24.00 mi12:39:532:37:556:356:26
6:26
-0:13
40K
24.85 mi12:45:272:43:296:355:34
6:31
+0:05
25.2M
25.20 mi12:47:542:45:566:352:27
7:06
+0:35
Finish
26.22 mi12:54:302:52:326:356:36
6:29
-0:37

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

6:26 /mi

Average Pace

6:35 /mi

Slowest Pace

7:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:05

99% of race

Time at Steady Pace

2:27

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:35 /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 mi10:22:2820:306:3620:30
6:36
#2861
10K
6.21 mi10:42:5340:556:3520:25
6:34
#3055
15K
9.32 mi11:03:171:01:196:3520:24
6:34
#3045
20K
12.43 mi11:23:471:21:496:3520:30
6:36
#2967
Half
13.11 mi11:28:151:26:176:354:28
6:33
#2966
25K
15.53 mi11:44:071:42:096:3515:52
6:33
#2839
30K
18.64 mi12:04:332:02:356:3520:26
6:35
#2614
20M
20.00 mi12:13:282:11:306:348:55
6:34
#2508
21M
21.00 mi12:20:192:18:216:356:51
6:51
#2423
35K
21.75 mi12:25:082:23:106:354:49
6:26
#2395
23M
23.00 mi12:33:272:31:296:358:19
6:39
#2351
24M
24.00 mi12:39:532:37:556:356:26
6:26
#2308
40K
24.85 mi12:45:272:43:296:355:34
6:31
#2254
25.2M
25.20 mi12:47:542:45:566:352:27
7:06
#2233
Finish
26.22 mi12:54:302:52:326:356:36
6:29
#2204
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi28611361363045(Top 11%)139(Top 1%)139(Top 3%)
10K6.21 mi3.10 mi3055-194143-7143-73305(Top 12%)156(Top 1%)156(Top 3%)
15K9.32 mi3.11 mi3045+10140+3140+33045(Top 11%)139(Top 1%)139(Top 3%)
20K12.43 mi3.11 mi2967+78132+8132+82847(Top 11%)125(Top 1%)125(Top 3%)
Half13.11 mi0.68 mi2966+1131+1131+13139(Top 12%)135(Top 1%)135(Top 3%)
25K15.53 mi2.42 mi2839+127123+8123+82410(Top 9%)101(Top 0.9%)101(Top 2%)
30K18.64 mi3.11 mi2614+225117+6117+61873(Top 7%)79(Top 0.7%)79(Top 2%)
20M20.00 mi1.36 mi2508+106107+10107+101707(Top 6%)79(Top 0.7%)79(Top 2%)
21M21.00 mi1.00 mi2423+85100+7100+71607(Top 6%)75(Top 0.7%)75(Top 2%)
35K21.75 mi0.75 mi2395+281001002175(Top 8%)109(Top 1.0%)109(Top 2%)
23M23.00 mi1.25 mi2351+4498+298+21954(Top 7%)101(Top 0.9%)101(Top 2%)
24M24.00 mi1.00 mi2308+4397+197+11845(Top 7%)106(Top 0.9%)106(Top 2%)
40K24.85 mi0.85 mi2254+5491+691+61607(Top 6%)93(Top 0.8%)93(Top 2%)
25.2M25.20 mi0.35 mi2233+2191912187(Top 8%)145(Top 1%)145(Top 3%)
Finish26.22 mi1.02 mi2204+2991912395(Top 9%)181(Top 2%)181(Top 4%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 11%
×21stories
+97ft-345ft

Overall

3045

Females

139

F18-39

139

5K→10K

3.1 - 6.2 mi

Top 12%
×5stories
+79ft-138ft

Overall

3305

Females

156

F18-39

156

10K→15K

6.2 - 9.3 mi

Top 11%
×3stories
+67ft-78ft

Overall

3045

Females

139

F18-39

139

15K→20K

9.3 - 12.4 mi

Top 11%
×5stories
+106ft-86ft

Overall

2847

Females

125

F18-39

125

20K→Half

12.4 - 13.1 mi

Top 12%
×2stories
+19ft-37ft

Overall

3139

Females

135

F18-39

135

Half→25K

13.1 - 15.5 mi

Top 9%
×4stories
+66ft-88ft

Overall

2410

Females

101

F18-39

101

25K→30K

15.5 - 18.6 mi

Top 7%
×9stories
+181ft-148ft

Overall

1873

Females

79

F18-39

79

30K→20M

18.6 - 20.0 mi

Top 6%
×5stories
+64ft-50ft

Overall

1707

Females

79

F18-39

79

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1607

Females

75

F18-39

75

21M→35K

21.0 - 21.8 mi

Top 8%
×7stories
+17ft-86ft

Overall

2175

Females

109

F18-39

109

35K→23M

21.8 - 23.0 mi

Top 7%
×5stories
+23ft-63ft

Overall

1954

Females

101

F18-39

101

23M→24M

23.0 - 24.0 mi

Top 7%
×6stories
+12ft-82ft

Overall

1845

Females

106

F18-39

106

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1607

Females

93

F18-39

93

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2187

Females

145

F18-39

145

25.2M→Finish

25.2 - 26.2 mi

Top 9%
×2stories
+22ft-21ft

Overall

2395

Females

181

F18-39

181

Passing Analysis

Category:
Athletes Passed
1171
Passed By
514
Net Change
+657
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2861
5K → 10K89283-194#2861#3055
10K → 15K9888+10#3055#3045
15K → 20K12345+78#3045#2967
20K → Half1918+1#2967#2966
Half → 25K13912+127#2966#2839
25K → 30K2294+225#2839#2614
30K → 20M1115+106#2614#2508
20M → 21M905+85#2508#2423
21M → 35K3911+28#2423#2395
35K → 23M6016+44#2395#2351
23M → 24M474+43#2351#2308
24M → 40K573+54#2308#2254
40K → 25.2M254+21#2254#2233
25.2M → Finish4516+29#2233#2204
TOTALS1171514+657
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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