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BOSTON MARATHON 2023

Siobhan Herr

Bib: 24804•F

NY

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

Start
0:00:00
Race begins
5K· 3.11 mi
34:42
Rank: #25906
Start → 5K
34:42 | 11:10/mi
10K· 6.21 mi
1:09:52
Rank: #25857 (+49)
5K → 10K
35:10 | 11:19/mi
15K· 9.32 mi
1:46:43
Rank: #25943 (-86)
10K → 15K
36:51 | 11:52/mi
20K· 12.43 mi
2:23:21
Rank: #25833 (+110)
15K → 20K
36:38 | 11:47/mi
Half· 13.11 mi
2:31:08
Rank: #25810 (+23)
20K → Half
7:47 | 11:24/mi
25K· 15.53 mi
2:59:46
Rank: #25669 (+141)
Half → 25K
28:38 | 11:49/mi
30K· 18.64 mi
3:37:41
Rank: #25501 (+168)
25K → 30K
37:55 | 12:12/mi
20M
3:53:28
Rank: #25409 (+92)
30K → 20M
15:47 | 11:37/mi
21M
4:07:46
Rank: #25413 (-4)
20M → 21M
14:18 | 14:18/mi
35K· 21.75 mi
4:16:34
Rank: #25389 (+24)
21M → 35K
8:48 | 11:46/mi
23M
4:32:17
Rank: #25362 (+27)
35K → 23M
15:43 | 12:33/mi
24M
4:45:40
Rank: #25399 (-37)
23M → 24M
13:23 | 13:23/mi
40K· 24.85 mi
4:57:56
Rank: #25421 (-22)
24M → 40K
12:16 | 14:21/mi
25.2M
5:02:33
Rank: #25415 (+6)
40K → 25.2M
4:37 | 13:23/mi
Finish· 26.22 mi
5:14:05
Rank: #25387 (+28)
25.2M → Finish
11:32 | 11:19/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:31:08
Pace11:32 /mi
2nd Half
Distance13.11 mi
Time2:42:57
Pace12:26 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:50:1434:4211:1034:42
11:10
-
10K
6.21 mi12:25:241:09:5211:1535:10
11:19
+0:09
15K
9.32 mi13:02:151:46:4311:2736:51
11:52
+0:33
20K
12.43 mi13:38:532:23:2111:3236:38
11:47
-0:05
Half
13.11 mi13:46:402:31:0811:327:47
11:24
-0:23
25K
15.53 mi14:15:182:59:4611:3428:38
11:49
+0:25
30K
18.64 mi14:53:133:37:4111:4137:55
12:12
+0:23
20M
20.00 mi15:09:003:53:2811:4015:47
11:37
-0:35
21M
21.00 mi15:23:184:07:4611:4814:18
14:18
+2:41
35K
21.75 mi15:32:064:16:3411:488:48
11:46
-2:32
23M
23.00 mi15:47:494:32:1711:5015:43
12:33
+0:47
24M
24.00 mi16:01:124:45:4011:5413:23
13:23
+0:50
40K
24.85 mi16:13:284:57:5611:5912:16
14:21
+0:58
25.2M
25.20 mi16:18:055:02:3312:004:37
13:23
-0:58
Finish
26.22 mi16:29:375:14:0511:5911:32
11:19
-2:04

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

11:10 /mi

Average Pace

11:59 /mi

Slowest Pace

14:21 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

34:42

11% of race

Time at Steady Pace

3:39:06

70% of race

Time at Slower Pace

1:00:17

19% of race

Average Pace: 11:59 /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 mi11:50:1434:4211:1034:42
11:10
#25906
10K
6.21 mi12:25:241:09:5211:1535:10
11:19
#25857
15K
9.32 mi13:02:151:46:4311:2736:51
11:52
#25943
20K
12.43 mi13:38:532:23:2111:3236:38
11:47
#25833
Half
13.11 mi13:46:402:31:0811:327:47
11:24
#25810
25K
15.53 mi14:15:182:59:4611:3428:38
11:49
#25669
30K
18.64 mi14:53:133:37:4111:4137:55
12:12
#25501
20M
20.00 mi15:09:003:53:2811:4015:47
11:37
#25409
21M
21.00 mi15:23:184:07:4611:4814:18
14:18
#25413
35K
21.75 mi15:32:064:16:3411:488:48
11:46
#25389
23M
23.00 mi15:47:494:32:1711:5015:43
12:33
#25362
24M
24.00 mi16:01:124:45:4011:5413:23
13:23
#25399
40K
24.85 mi16:13:284:57:5611:5912:16
14:21
#25421
25.2M
25.20 mi16:18:055:02:3312:004:37
13:23
#25415
Finish
26.22 mi16:29:375:14:0511:5911:32
11:19
#25387
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi25906109921099225975(Top 98%)11025(Top 97%)11025(Top 226%)
10K6.21 mi3.10 mi25857+4910952+4010952+4025813(Top 97%)10920(Top 96%)10920(Top 224%)
15K9.32 mi3.11 mi25943-8611008-5611008-5625975(Top 98%)11025(Top 97%)11025(Top 226%)
20K12.43 mi3.11 mi25833+11010941+6710941+6725521(Top 96%)10782(Top 94%)10782(Top 221%)
Half13.11 mi0.68 mi25810+2310930+1110930+1125400(Top 95%)10727(Top 94%)10727(Top 220%)
25K15.53 mi2.42 mi25669+14110859+7110859+7124996(Top 94%)10514(Top 92%)10514(Top 215%)
30K18.64 mi3.11 mi25501+16810777+8210777+8224717(Top 93%)10406(Top 91%)10406(Top 213%)
20M20.00 mi1.36 mi25409+9210733+4410733+4423706(Top 89%)9908(Top 87%)9908(Top 203%)
21M21.00 mi1.00 mi25413-410739-610739-625293(Top 95%)10755(Top 94%)10755(Top 220%)
35K21.75 mi0.75 mi25389+2410731+810731+824441(Top 92%)10367(Top 91%)10367(Top 212%)
23M23.00 mi1.25 mi25362+2710716+1510716+1524641(Top 93%)10459(Top 92%)10459(Top 214%)
24M24.00 mi1.00 mi25399-3710739-2310739-2325734(Top 97%)11040(Top 97%)11040(Top 226%)
40K24.85 mi0.85 mi25421-2210753-1410753-1425876(Top 97%)11115(Top 97%)11115(Top 228%)
25.2M25.20 mi0.35 mi25415+610754-110754-124432(Top 92%)10399(Top 91%)10399(Top 213%)
Finish26.22 mi1.02 mi25387+2810742+1210742+1224458(Top 92%)10385(Top 91%)10385(Top 213%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 98%
×21stories
+97ft-345ft

Overall

25975

Females

11025

F18-39

11025

5K→10K

3.1 - 6.2 mi

Top 97%
×5stories
+79ft-138ft

Overall

25813

Females

10920

F18-39

10920

10K→15K

6.2 - 9.3 mi

Top 98%
×3stories
+67ft-78ft

Overall

25975

Females

11025

F18-39

11025

15K→20K

9.3 - 12.4 mi

Top 96%
×5stories
+106ft-86ft

Overall

25521

Females

10782

F18-39

10782

20K→Half

12.4 - 13.1 mi

Top 95%
×2stories
+19ft-37ft

Overall

25400

Females

10727

F18-39

10727

Half→25K

13.1 - 15.5 mi

Top 94%
×4stories
+66ft-88ft

Overall

24996

Females

10514

F18-39

10514

25K→30K

15.5 - 18.6 mi

Top 93%
×9stories
+181ft-148ft

Overall

24717

Females

10406

F18-39

10406

30K→20M

18.6 - 20.0 mi

Top 89%
×5stories
+64ft-50ft

Overall

23706

Females

9908

F18-39

9908

20M→21M

20.0 - 21.0 mi

Top 95%
×8stories
+106ft-24ft

Overall

25293

Females

10755

F18-39

10755

21M→35K

21.0 - 21.8 mi

Top 92%
×7stories
+17ft-86ft

Overall

24441

Females

10367

F18-39

10367

35K→23M

21.8 - 23.0 mi

Top 93%
×5stories
+23ft-63ft

Overall

24641

Females

10459

F18-39

10459

23M→24M

23.0 - 24.0 mi

Top 97%
×6stories
+12ft-82ft

Overall

25734

Females

11040

F18-39

11040

24M→40K

24.0 - 24.9 mi

Top 97%
×1story
+6ft-20ft

Overall

25876

Females

11115

F18-39

11115

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1story
+13ft-16ft

Overall

24432

Females

10399

F18-39

10399

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2stories
+22ft-21ft

Overall

24458

Females

10385

F18-39

10385

Passing Analysis

Category:
Athletes Passed
927
Passed By
408
Net Change
+519
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25906
5K → 10K13990+49#25906#25857
10K → 15K45131-86#25857#25943
15K → 20K13020+110#25943#25833
20K → Half274+23#25833#25810
Half → 25K1498+141#25810#25669
25K → 30K1746+168#25669#25501
30K → 20M964+92#25501#25409
20M → 21M2428-4#25409#25413
21M → 35K295+24#25413#25389
35K → 23M4518+27#25389#25362
23M → 24M1148-37#25362#25399
24M → 40K1032-22#25399#25421
40K → 25.2M93+6#25421#25415
25.2M → Finish3911+28#25415#25387
TOTALS927408+519
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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