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BOSTON MARATHON 2023

Susan Hornstein

Bib: 22828•F

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0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F50-54)
#0 / 1207
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
30:08
Rank: #22661
Start → 5K
9:42/mi
30:08 split
10K· 6.21 mi
1:00:54
Rank: #23173 (-512)
5K → 10K
9:54/mi
30:46 split
15K· 9.32 mi
1:32:20
Rank: #23389 (-216)
10K → 15K
10:07/mi
31:26 split
20K· 12.43 mi
2:05:04
Rank: #23565 (-176)
15K → 20K
10:32/mi
32:44 split
Half· 13.11 mi
2:12:08
Rank: #23590 (-25)
20K → Half
10:21/mi
7:04 split
25K· 15.53 mi
2:38:30
Rank: #23612 (-22)
Half → 25K
10:52/mi
26:22 split
30K· 18.64 mi
3:11:58
Rank: #23441 (+171)
25K → 30K
10:46/mi
33:28 split
20M
3:27:13
Rank: #23405 (+36)
30K → 20M
11:13/mi
15:15 split
21M
3:40:02
Rank: #23452 (-47)
20M → 21M
12:49/mi
12:49 split
35K· 21.75 mi
3:47:45
Rank: #23409 (+43)
21M → 35K
10:19/mi
7:43 split
23M
4:01:27
Rank: #23340 (+69)
35K → 23M
10:57/mi
13:42 split
24M
4:12:26
Rank: #23336 (+4)
23M → 24M
10:59/mi
10:59 split
40K· 24.85 mi
4:21:28
Rank: #23267 (+69)
24M → 40K
10:34/mi
9:02 split
25.2M
4:25:20
Rank: #23218 (+49)
40K → 25.2M
11:13/mi
3:52 split
Finish· 26.22 mi
4:35:24
Rank: #23157 (+61)
25.2M → Finish
9:53/mi
10:04 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:12:08
Pace10:05 /mi
2nd Half
Distance13.11 mi
Time2:23:16
Pace10:56 /mi
📊Positive Split: 8.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:25:5030:089:4230:08
9:42
-
10K
6.21 mi11:56:361:00:549:4830:46
9:54
+0:12
15K
9.32 mi12:28:021:32:209:5431:26
10:07
+0:13
20K
12.43 mi13:00:462:05:0410:0432:44
10:32
+0:25
Half
13.11 mi13:07:502:12:0810:057:04
10:21
-0:11
25K
15.53 mi13:34:122:38:3010:1226:22
10:52
+0:31
30K
18.64 mi14:07:403:11:5810:1833:28
10:46
-0:06
20M
20.00 mi14:22:553:27:1310:2215:15
11:13
+0:27
21M
21.00 mi14:35:443:40:0210:2912:49
12:49
+1:36
35K
21.75 mi14:43:273:47:4510:287:43
10:19
-2:30
23M
23.00 mi14:57:094:01:2710:3013:42
10:57
+0:38
24M
24.00 mi15:08:084:12:2610:3110:59
10:59
+0:02
40K
24.85 mi15:17:104:21:2810:319:02
10:34
-0:25
25.2M
25.20 mi15:21:024:25:2010:323:52
11:13
+0:39
Finish
26.22 mi15:31:064:35:2410:3110:04
9:53
-1:20

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

9:42 /mi

Average Pace

10:31 /mi

Slowest Pace

12:49 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:42:24

37% of race

Time at Steady Pace

1:56:23

42% of race

Time at Slower Pace

56:37

21% of race

Average Pace: 10:30 /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 mi11:25:5030:089:4230:08
9:42
#22661
10K
6.21 mi11:56:361:00:549:4830:46
9:54
#23173
15K
9.32 mi12:28:021:32:209:5431:26
10:07
#23389
20K
12.43 mi13:00:462:05:0410:0432:44
10:32
#23565
Half
13.11 mi13:07:502:12:0810:057:04
10:21
#23590
25K
15.53 mi13:34:122:38:3010:1226:22
10:52
#23612
30K
18.64 mi14:07:403:11:5810:1833:28
10:46
#23441
20M
20.00 mi14:22:553:27:1310:2215:15
11:13
#23405
21M
21.00 mi14:35:443:40:0210:2912:49
12:49
#23452
35K
21.75 mi14:43:273:47:4510:287:43
10:19
#23409
23M
23.00 mi14:57:094:01:2710:3013:42
10:57
#23340
24M
24.00 mi15:08:084:12:2610:3110:59
10:59
#23336
40K
24.85 mi15:17:104:21:2810:319:02
10:34
#23267
25.2M
25.20 mi15:21:024:25:2010:323:52
11:13
#23218
Finish
26.22 mi15:31:064:35:2410:3110:04
9:53
#23157
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF50-54Seg. OverallSeg. FemalesSeg. F50-54
5K3.11 mi3.11 mi226619214921423730(Top 89%)9741(Top 85%)9741(Top 807%)
10K6.21 mi3.10 mi23173-5129455-2419455-24123495(Top 88%)9622(Top 84%)9622(Top 797%)
15K9.32 mi3.11 mi23389-2169551-969551-9623730(Top 89%)9741(Top 85%)9741(Top 807%)
20K12.43 mi3.11 mi23565-1769642-919642-9123895(Top 90%)9842(Top 86%)9842(Top 815%)
Half13.11 mi0.68 mi23590-259658-169658-1623937(Top 90%)9873(Top 86%)9873(Top 818%)
25K15.53 mi2.42 mi23612-229681-239681-2323780(Top 89%)9835(Top 86%)9835(Top 815%)
30K18.64 mi3.11 mi23441+1719610+719610+7122737(Top 85%)9319(Top 82%)9319(Top 772%)
20M20.00 mi1.36 mi23405+369610961023055(Top 87%)9544(Top 84%)9544(Top 791%)
21M21.00 mi1.00 mi23452-479639-299639-2923858(Top 90%)10012(Top 88%)10012(Top 829%)
35K21.75 mi0.75 mi23409+439625+149625+1422053(Top 83%)9084(Top 80%)9084(Top 753%)
23M23.00 mi1.25 mi23340+699597+289597+2822242(Top 84%)9191(Top 80%)9191(Top 761%)
24M24.00 mi1.00 mi23336+49607-109607-1023033(Top 87%)9653(Top 85%)9653(Top 800%)
40K24.85 mi0.85 mi23267+699574+339574+3321393(Top 80%)8838(Top 77%)8838(Top 732%)
25.2M25.20 mi0.35 mi23218+499554+209554+2020986(Top 79%)8592(Top 75%)8592(Top 712%)
Finish26.22 mi1.02 mi23157+619530+249530+2421437(Top 81%)8812(Top 77%)8812(Top 730%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 89%
×21story building
+97ft-345ft

Overall

23730

Females

9741

F50-54

9741

5K→10K

3.1 - 6.2 mi

Top 88%
×5story building
+79ft-138ft

Overall

23495

Females

9622

F50-54

9622

10K→15K

6.2 - 9.3 mi

Top 89%
×3story building
+67ft-78ft

Overall

23730

Females

9741

F50-54

9741

15K→20K

9.3 - 12.4 mi

Top 90%
×5story building
+106ft-86ft

Overall

23895

Females

9842

F50-54

9842

20K→Half

12.4 - 13.1 mi

Top 90%
×2story building
+19ft-37ft

Overall

23937

Females

9873

F50-54

9873

Half→25K

13.1 - 15.5 mi

Top 89%
×4story building
+66ft-88ft

Overall

23780

Females

9835

F50-54

9835

25K→30K

15.5 - 18.6 mi

Top 85%
×9story building
+181ft-148ft

Overall

22737

Females

9319

F50-54

9319

30K→20M

18.6 - 20.0 mi

Top 87%
×5story building
+64ft-50ft

Overall

23055

Females

9544

F50-54

9544

20M→21M

20.0 - 21.0 mi

Top 90%
×8story building
+106ft-24ft

Overall

23858

Females

10012

F50-54

10012

21M→35K

21.0 - 21.8 mi

Top 83%
×7story building
+17ft-86ft

Overall

22053

Females

9084

F50-54

9084

35K→23M

21.8 - 23.0 mi

Top 84%
×5story building
+23ft-63ft

Overall

22242

Females

9191

F50-54

9191

23M→24M

23.0 - 24.0 mi

Top 87%
×6story building
+12ft-82ft

Overall

23033

Females

9653

F50-54

9653

24M→40K

24.0 - 24.9 mi

Top 80%
×1story
+6ft-20ft

Overall

21393

Females

8838

F50-54

8838

40K→25.2M

24.9 - 25.2 mi

Top 79%
×1story
+13ft-16ft

Overall

20986

Females

8592

F50-54

8592

25.2M→Finish

25.2 - 26.2 mi

Top 81%
×2story building
+22ft-21ft

Overall

21437

Females

8812

F50-54

8812

Passing Analysis

Category:
Athletes Passed
936
Passed By
1432
Net Change
-496
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22661
5K → 10K58570-512#22661#23173
10K → 15K69285-216#23173#23389
15K → 20K62238-176#23389#23565
20K → Half1641-25#23565#23590
Half → 25K7496-22#23590#23612
25K → 30K19726+171#23612#23441
30K → 20M7337+36#23441#23405
20M → 21M2572-47#23405#23452
21M → 35K518+43#23452#23409
35K → 23M8213+69#23409#23340
23M → 24M3733+4#23340#23336
24M → 40K745+69#23336#23267
40K → 25.2M534+49#23267#23218
25.2M → Finish654+61#23218#23157
TOTALS9361432-496
📊

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