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BOSTON MARATHON 2023

Polly Henderson

Bib: 17577•F

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0:00
0:00
/ mi
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Overall
#0 / 26622
Top 22%
Gender (Female)
#0 / 11423
Top 5%
Age Group (F18-39)
#0 / 4884
Top 10%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K· 3.11 mi
21:35
Rank: #5929
Start → 5K
21:35 | 6:57/mi
10K· 6.21 mi
43:13
Rank: #6245 (-316)
5K → 10K
21:38 | 6:58/mi
15K· 9.32 mi
1:05:00
Rank: #6348 (-103)
10K → 15K
21:47 | 7:01/mi
20K· 12.43 mi
1:26:37
Rank: #6159 (+189)
15K → 20K
21:37 | 6:57/mi
Half· 13.11 mi
1:31:21
Rank: #6166 (-7)
20K → Half
4:44 | 6:56/mi
25K· 15.53 mi
1:48:21
Rank: #6060 (+106)
Half → 25K
17:00 | 7:01/mi
30K· 18.64 mi
2:10:42
Rank: #5885 (+175)
25K → 30K
22:21 | 7:12/mi
20M
2:20:36
Rank: #5834 (+51)
30K → 20M
9:54 | 7:17/mi
21M
2:28:26
Rank: #5810 (+24)
20M → 21M
7:50 | 7:50/mi
35K· 21.75 mi
2:34:15
Rank: #5911 (-101)
21M → 35K
5:49 | 7:46/mi
23M
2:43:46
Rank: #5928 (-17)
35K → 23M
9:31 | 7:36/mi
24M
2:51:04
Rank: #5895 (+33)
23M → 24M
7:18 | 7:18/mi
40K· 24.85 mi
2:57:29
Rank: #5875 (+20)
24M → 40K
6:25 | 7:30/mi
25.2M
3:00:13
Rank: #5861 (+14)
40K → 25.2M
2:44 | 7:56/mi
Finish· 26.22 mi
3:07:24
Rank: #5793 (+68)
25.2M → Finish
7:11 | 7:03/mi
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Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via Half
Distance13.11 mi
Time1:31:21
Pace6:58 /mi
2nd Half
Distance13.11 mi
Time1:36:03
Pace7:20 /mi
📊Positive Split: 5.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:12:0021:356:5721:35
6:57
-
10K
6.21 mi11:33:3843:136:5721:38
6:58
+0:01
15K
9.32 mi11:55:251:05:006:5821:47
7:01
+0:03
20K
12.43 mi12:17:021:26:376:5821:37
6:57
-0:04
Half
13.11 mi12:21:461:31:216:584:44
6:56
-0:01
25K
15.53 mi12:38:461:48:216:5817:00
7:01
+0:05
30K
18.64 mi13:01:072:10:427:0122:21
7:12
+0:11
20M
20.00 mi13:11:012:20:367:029:54
7:17
+0:05
21M
21.00 mi13:18:512:28:267:047:50
7:50
+0:33
35K
21.75 mi13:24:402:34:157:065:49
7:46
-0:04
23M
23.00 mi13:34:112:43:467:079:31
7:36
-0:10
24M
24.00 mi13:41:292:51:047:087:18
7:18
-0:18
40K
24.85 mi13:47:542:57:297:086:25
7:30
+0:12
25.2M
25.20 mi13:50:383:00:137:092:44
7:56
+0:26
Finish
26.22 mi13:57:493:07:247:097:11
7:03
-0:53

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

6:56 /mi

Average Pace

7:09 /mi

Slowest Pace

7:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

2:51:01

91% of race

Time at Steady Pace

16:23

9% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:09 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:12:0021:356:5721:35
6:57
#5929
10K
6.21 mi11:33:3843:136:5721:38
6:58
#6245
15K
9.32 mi11:55:251:05:006:5821:47
7:01
#6348
20K
12.43 mi12:17:021:26:376:5821:37
6:57
#6159
Half
13.11 mi12:21:461:31:216:584:44
6:56
#6166
25K
15.53 mi12:38:461:48:216:5817:00
7:01
#6060
30K
18.64 mi13:01:072:10:427:0122:21
7:12
#5885
20M
20.00 mi13:11:012:20:367:029:54
7:17
#5834
21M
21.00 mi13:18:512:28:267:047:50
7:50
#5810
35K
21.75 mi13:24:402:34:157:065:49
7:46
#5911
23M
23.00 mi13:34:112:43:467:079:31
7:36
#5928
24M
24.00 mi13:41:292:51:047:087:18
7:18
#5895
40K
24.85 mi13:47:542:57:297:086:25
7:30
#5875
25.2M
25.20 mi13:50:383:00:137:092:44
7:56
#5861
Finish
26.22 mi13:57:493:07:247:097:11
7:03
#5793
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi59294914916637(Top 25%)662(Top 6%)662(Top 14%)
10K6.21 mi3.10 mi6245-316564-73564-736585(Top 25%)657(Top 6%)657(Top 13%)
15K9.32 mi3.11 mi6348-103594-30594-306637(Top 25%)662(Top 6%)662(Top 14%)
20K12.43 mi3.11 mi6159+189552+42552+425723(Top 21%)471(Top 4%)471(Top 10%)
Half13.11 mi0.68 mi6166-7550+2550+26264(Top 24%)564(Top 5%)564(Top 12%)
25K15.53 mi2.42 mi6060+106528+22528+225658(Top 21%)469(Top 4%)469(Top 10%)
30K18.64 mi3.11 mi5885+175504+24504+245467(Top 21%)494(Top 4%)494(Top 10%)
20M20.00 mi1.36 mi5834+51501+3501+35578(Top 21%)591(Top 5%)591(Top 12%)
21M21.00 mi1.00 mi5810+24507-6507-66356(Top 24%)894(Top 8%)894(Top 18%)
35K21.75 mi0.75 mi5911-101539-32539-3210483(Top 39%)2583(Top 23%)2583(Top 53%)
23M23.00 mi1.25 mi5928-17555-16555-167105(Top 27%)1202(Top 11%)1202(Top 25%)
24M24.00 mi1.00 mi5895+33562-7562-76398(Top 24%)1037(Top 9%)1037(Top 21%)
40K24.85 mi0.85 mi5875+20566-4566-46776(Top 25%)1261(Top 11%)1261(Top 26%)
25.2M25.20 mi0.35 mi5861+14567-1567-16131(Top 23%)1081(Top 9%)1081(Top 22%)
Finish26.22 mi1.02 mi5793+68568-1568-15532(Top 21%)911(Top 8%)911(Top 19%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 25%
×21stories
+97ft-345ft

Overall

6637

Females

662

F18-39

662

5K→10K

3.1 - 6.2 mi

Top 25%
×5stories
+79ft-138ft

Overall

6585

Females

657

F18-39

657

10K→15K

6.2 - 9.3 mi

Top 25%
×3stories
+67ft-78ft

Overall

6637

Females

662

F18-39

662

15K→20K

9.3 - 12.4 mi

Top 21%
×5stories
+106ft-86ft

Overall

5723

Females

471

F18-39

471

20K→Half

12.4 - 13.1 mi

Top 24%
×2stories
+19ft-37ft

Overall

6264

Females

564

F18-39

564

Half→25K

13.1 - 15.5 mi

Top 21%
×4stories
+66ft-88ft

Overall

5658

Females

469

F18-39

469

25K→30K

15.5 - 18.6 mi

Top 21%
×9stories
+181ft-148ft

Overall

5467

Females

494

F18-39

494

30K→20M

18.6 - 20.0 mi

Top 21%
×5stories
+64ft-50ft

Overall

5578

Females

591

F18-39

591

20M→21M

20.0 - 21.0 mi

Top 24%
×8stories
+106ft-24ft

Overall

6356

Females

894

F18-39

894

21M→35K

21.0 - 21.8 mi

Top 39%
×7stories
+17ft-86ft

Overall

10483

Females

2583

F18-39

2583

35K→23M

21.8 - 23.0 mi

Top 27%
×5stories
+23ft-63ft

Overall

7105

Females

1202

F18-39

1202

23M→24M

23.0 - 24.0 mi

Top 24%
×6stories
+12ft-82ft

Overall

6398

Females

1037

F18-39

1037

24M→40K

24.0 - 24.9 mi

Top 25%
×1story
+6ft-20ft

Overall

6776

Females

1261

F18-39

1261

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6131

Females

1081

F18-39

1081

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2stories
+22ft-21ft

Overall

5532

Females

911

F18-39

911

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1207
Passed By
1071
Net Change
+136
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5929
5K → 10K80396-316#5929#6245
10K → 15K78181-103#6245#6348
15K → 20K21021+189#6348#6159
20K → Half1623-7#6159#6166
Half → 25K13529+106#6166#6060
25K → 30K21742+175#6060#5885
30K → 20M8837+51#5885#5834
20M → 21M6440+24#5834#5810
21M → 35K14115-101#5810#5911
35K → 23M6178-17#5911#5928
23M → 24M6936+33#5928#5895
24M → 40K5535+20#5895#5875
40K → 25.2M2511+14#5875#5861
25.2M → Finish9527+68#5861#5793
TOTALS12071071+136
📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
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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Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing