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BOSTON MARATHON 2023

Samantha Bradley

Bib: 12499•F

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0:00
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Overall
#0 / 26622
Top 49%
Gender (Female)
#0 / 11423
Top 33%
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
24:12
Rank: #12272
Start → 5K
24:12 | 7:47/mi
10K· 6.21 mi
48:33
Rank: #12830 (-558)
5K → 10K
24:21 | 7:50/mi
15K· 9.32 mi
1:13:11
Rank: #13157 (-327)
10K → 15K
24:38 | 7:56/mi
20K· 12.43 mi
1:38:24
Rank: #13458 (-301)
15K → 20K
25:13 | 8:07/mi
Half· 13.11 mi
1:43:45
Rank: #13436 (+22)
20K → Half
5:21 | 7:50/mi
25K· 15.53 mi
2:03:36
Rank: #13523 (-87)
Half → 25K
19:51 | 8:11/mi
30K· 18.64 mi
2:29:29
Rank: #13440 (+83)
25K → 30K
25:53 | 8:20/mi
20M
2:40:51
Rank: #13364 (+76)
30K → 20M
11:22 | 8:22/mi
21M
2:49:51
Rank: #13357 (+7)
20M → 21M
9:00 | 9:00/mi
35K· 21.75 mi
2:55:51
Rank: #13301 (+56)
21M → 35K
6:00 | 8:01/mi
23M
3:06:26
Rank: #13245 (+56)
35K → 23M
10:35 | 8:27/mi
24M
3:14:38
Rank: #13194 (+51)
23M → 24M
8:12 | 8:12/mi
40K· 24.85 mi
3:21:50
Rank: #13166 (+28)
24M → 40K
7:12 | 8:25/mi
25.2M
3:24:55
Rank: #13119 (+47)
40K → 25.2M
3:05 | 8:56/mi
Finish· 26.22 mi
3:33:07
Rank: #13086 (+33)
25.2M → Finish
8:12 | 8:03/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:43:45
Pace7:55 /mi
2nd Half
Distance13.11 mi
Time1:49:22
Pace8:21 /mi
📊Positive Split: 5.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:52:3924:127:4724:12
7:47
-
10K
6.21 mi11:17:0048:337:4924:21
7:50
+0:03
15K
9.32 mi11:41:381:13:117:5124:38
7:56
+0:06
20K
12.43 mi12:06:511:38:247:5525:13
8:07
+0:11
Half
13.11 mi12:12:121:43:457:555:21
7:50
-0:17
25K
15.53 mi12:32:032:03:367:5719:51
8:11
+0:21
30K
18.64 mi12:57:562:29:298:0125:53
8:20
+0:09
20M
20.00 mi13:09:182:40:518:0311:22
8:22
+0:02
21M
21.00 mi13:18:182:49:518:059:00
9:00
+0:38
35K
21.75 mi13:24:182:55:518:056:00
8:01
-0:59
23M
23.00 mi13:34:533:06:268:0610:35
8:27
+0:26
24M
24.00 mi13:43:053:14:388:078:12
8:12
-0:15
40K
24.85 mi13:50:173:21:508:077:12
8:25
+0:13
25.2M
25.20 mi13:53:223:24:558:083:05
8:56
+0:31
Finish
26.22 mi14:01:343:33:078:088:12
8:03
-0:53

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

7:47 /mi

Average Pace

8:08 /mi

Slowest Pace

9:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:21:02

94% of race

Time at Steady Pace

12:05

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:08 /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 mi10:52:3924:127:4724:12
7:47
#12272
10K
6.21 mi11:17:0048:337:4924:21
7:50
#12830
15K
9.32 mi11:41:381:13:117:5124:38
7:56
#13157
20K
12.43 mi12:06:511:38:247:5525:13
8:07
#13458
Half
13.11 mi12:12:121:43:457:555:21
7:50
#13436
25K
15.53 mi12:32:032:03:367:5719:51
8:11
#13523
30K
18.64 mi12:57:562:29:298:0125:53
8:20
#13440
20M
20.00 mi13:09:182:40:518:0311:22
8:22
#13364
21M
21.00 mi13:18:182:49:518:059:00
9:00
#13357
35K
21.75 mi13:24:182:55:518:056:00
8:01
#13301
23M
23.00 mi13:34:533:06:268:0610:35
8:27
#13245
24M
24.00 mi13:43:053:14:388:078:12
8:12
#13194
40K
24.85 mi13:50:173:21:508:077:12
8:25
#13166
25.2M
25.20 mi13:53:223:24:558:083:05
8:56
#13119
Finish
26.22 mi14:01:343:33:078:088:12
8:03
#13086
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi122723023302313815(Top 52%)3974(Top 35%)3974(Top 81%)
10K6.21 mi3.10 mi12830-5583336-3133336-31313463(Top 51%)3696(Top 32%)3696(Top 76%)
15K9.32 mi3.11 mi13157-3273558-2223558-22213815(Top 52%)3974(Top 35%)3974(Top 81%)
20K12.43 mi3.11 mi13458-3013756-1983756-19814330(Top 54%)4301(Top 38%)4301(Top 88%)
Half13.11 mi0.68 mi13436+223745+113745+1113163(Top 49%)3597(Top 31%)3597(Top 74%)
25K15.53 mi2.42 mi13523-873821-763821-7614145(Top 53%)4307(Top 38%)4307(Top 88%)
30K18.64 mi3.11 mi13440+833808+133808+1313231(Top 50%)3884(Top 34%)3884(Top 80%)
20M20.00 mi1.36 mi13364+763777+313777+3112804(Top 48%)3745(Top 33%)3745(Top 77%)
21M21.00 mi1.00 mi13357+73787-103787-1013420(Top 50%)4165(Top 36%)4165(Top 85%)
35K21.75 mi0.75 mi13301+563772+153772+1512324(Top 46%)3615(Top 32%)3615(Top 74%)
23M23.00 mi1.25 mi13245+563761+113761+1112936(Top 49%)4032(Top 35%)4032(Top 83%)
24M24.00 mi1.00 mi13194+513763-23763-212626(Top 47%)3926(Top 34%)3926(Top 80%)
40K24.85 mi0.85 mi13166+283764-13764-112862(Top 48%)4135(Top 36%)4135(Top 85%)
25.2M25.20 mi0.35 mi13119+473752+123752+1212231(Top 46%)3844(Top 34%)3844(Top 79%)
Finish26.22 mi1.02 mi13086+333751+13751+112463(Top 47%)3940(Top 34%)3940(Top 81%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 52%
×21stories
+97ft-345ft

Overall

13815

Females

3974

F18-39

3974

5K→10K

3.1 - 6.2 mi

Top 51%
×5stories
+79ft-138ft

Overall

13463

Females

3696

F18-39

3696

10K→15K

6.2 - 9.3 mi

Top 52%
×3stories
+67ft-78ft

Overall

13815

Females

3974

F18-39

3974

15K→20K

9.3 - 12.4 mi

Top 54%
×5stories
+106ft-86ft

Overall

14330

Females

4301

F18-39

4301

20K→Half

12.4 - 13.1 mi

Top 49%
×2stories
+19ft-37ft

Overall

13163

Females

3597

F18-39

3597

Half→25K

13.1 - 15.5 mi

Top 53%
×4stories
+66ft-88ft

Overall

14145

Females

4307

F18-39

4307

25K→30K

15.5 - 18.6 mi

Top 50%
×9stories
+181ft-148ft

Overall

13231

Females

3884

F18-39

3884

30K→20M

18.6 - 20.0 mi

Top 48%
×5stories
+64ft-50ft

Overall

12804

Females

3745

F18-39

3745

20M→21M

20.0 - 21.0 mi

Top 50%
×8stories
+106ft-24ft

Overall

13420

Females

4165

F18-39

4165

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

12324

Females

3615

F18-39

3615

35K→23M

21.8 - 23.0 mi

Top 49%
×5stories
+23ft-63ft

Overall

12936

Females

4032

F18-39

4032

23M→24M

23.0 - 24.0 mi

Top 47%
×6stories
+12ft-82ft

Overall

12626

Females

3926

F18-39

3926

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

12862

Females

4135

F18-39

4135

40K→25.2M

24.9 - 25.2 mi

Top 46%
×1story
+13ft-16ft

Overall

12231

Females

3844

F18-39

3844

25.2M→Finish

25.2 - 26.2 mi

Top 47%
×2stories
+22ft-21ft

Overall

12463

Females

3940

F18-39

3940

Passing Analysis

Category:
Athletes Passed
1407
Passed By
2221
Net Change
-814
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12272
5K → 10K114672-558#12272#12830
10K → 15K101428-327#12830#13157
15K → 20K103404-301#13157#13458
20K → Half4018+22#13458#13436
Half → 25K105192-87#13436#13523
25K → 30K234151+83#13523#13440
30K → 20M11741+76#13440#13364
20M → 21M9386+7#13364#13357
21M → 35K8226+56#13357#13301
35K → 23M12064+56#13301#13245
23M → 24M9544+51#13245#13194
24M → 40K7345+28#13194#13166
40K → 25.2M5912+47#13166#13119
25.2M → Finish7138+33#13119#13086
TOTALS14072221-814
📊

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