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BOSTON MARATHON 2023

Laura Bradford

Bib: 19337•F

NC

0:00
0:00
/ mi
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 47%
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
25:50
Rank: #16270
Start → 5K
25:50 | 8:19/mi
10K· 6.21 mi
50:58
Rank: #15850 (+420)
5K → 10K
25:08 | 8:05/mi
15K· 9.32 mi
1:16:45
Rank: #16079 (-229)
10K → 15K
25:47 | 8:18/mi
20K· 12.43 mi
1:43:13
Rank: #16324 (-245)
15K → 20K
26:28 | 8:31/mi
Half· 13.11 mi
1:48:59
Rank: #16389 (-65)
20K → Half
5:46 | 8:27/mi
25K· 15.53 mi
2:09:51
Rank: #16471 (-82)
Half → 25K
20:52 | 8:36/mi
30K· 18.64 mi
2:37:06
Rank: #16341 (+130)
25K → 30K
27:15 | 8:46/mi
20M
2:48:45
Rank: #16149 (+192)
30K → 20M
11:39 | 8:34/mi
21M
2:58:10
Rank: #16082 (+67)
20M → 21M
9:25 | 9:25/mi
35K· 21.75 mi
3:04:18
Rank: #15972 (+110)
21M → 35K
6:08 | 8:12/mi
23M
3:15:18
Rank: #15896 (+76)
35K → 23M
11:00 | 8:47/mi
24M
3:23:40
Rank: #15789 (+107)
23M → 24M
8:22 | 8:22/mi
40K· 24.85 mi
3:31:11
Rank: #15753 (+36)
24M → 40K
7:31 | 8:47/mi
25.2M
3:34:32
Rank: #15765 (-12)
40K → 25.2M
3:21 | 9:43/mi
Finish· 26.22 mi
3:43:26
Rank: #15785 (-20)
25.2M → Finish
8:54 | 8:44/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:48:59
Pace8:19 /mi
2nd Half
Distance13.11 mi
Time1:54:27
Pace8:44 /mi
📊Positive Split: 5.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:5025:508:1925:50
8:19
-
10K
6.21 mi11:42:5850:588:1225:08
8:05
-0:14
15K
9.32 mi12:08:451:16:458:1425:47
8:18
+0:13
20K
12.43 mi12:35:131:43:138:1826:28
8:31
+0:13
Half
13.11 mi12:40:591:48:598:195:46
8:27
-0:04
25K
15.53 mi13:01:512:09:518:2220:52
8:36
+0:09
30K
18.64 mi13:29:062:37:068:2627:15
8:46
+0:10
20M
20.00 mi13:40:452:48:458:2611:39
8:34
-0:12
21M
21.00 mi13:50:102:58:108:299:25
9:25
+0:51
35K
21.75 mi13:56:183:04:188:286:08
8:12
-1:13
23M
23.00 mi14:07:183:15:188:2911:00
8:47
+0:35
24M
24.00 mi14:15:403:23:408:298:22
8:22
-0:25
40K
24.85 mi14:23:113:31:118:307:31
8:47
+0:25
25.2M
25.20 mi14:26:323:34:328:313:21
9:43
+0:56
Finish
26.22 mi14:35:263:43:268:328:54
8:44
-0:59

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

8:05 /mi

Average Pace

8:32 /mi

Slowest Pace

9:43 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:22:53

37% of race

Time at Steady Pace

1:49:16

49% of race

Time at Slower Pace

31:17

14% of race

Average Pace: 8:31 /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 mi11:17:5025:508:1925:50
8:19
#16270
10K
6.21 mi11:42:5850:588:1225:08
8:05
#15850
15K
9.32 mi12:08:451:16:458:1425:47
8:18
#16079
20K
12.43 mi12:35:131:43:138:1826:28
8:31
#16324
Half
13.11 mi12:40:591:48:598:195:46
8:27
#16389
25K
15.53 mi13:01:512:09:518:2220:52
8:36
#16471
30K
18.64 mi13:29:062:37:068:2627:15
8:46
#16341
20M
20.00 mi13:40:452:48:458:2611:39
8:34
#16149
21M
21.00 mi13:50:102:58:108:299:25
9:25
#16082
35K
21.75 mi13:56:183:04:188:286:08
8:12
#15972
23M
23.00 mi14:07:183:15:188:2911:00
8:47
#15896
24M
24.00 mi14:15:403:23:408:298:22
8:22
#15789
40K
24.85 mi14:23:113:31:118:307:31
8:47
#15753
25.2M
25.20 mi14:26:323:34:328:313:21
9:43
#15765
Finish
26.22 mi14:35:263:43:268:328:54
8:44
#15785
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi162705451545116531(Top 62%)5610(Top 49%)5610(Top 115%)
10K6.21 mi3.10 mi15850+4205190+2615190+26115455(Top 58%)4941(Top 43%)4941(Top 101%)
15K9.32 mi3.11 mi16079-2295334-1445334-14416531(Top 62%)5610(Top 49%)5610(Top 115%)
20K12.43 mi3.11 mi16324-2455504-1705504-17016979(Top 64%)5913(Top 52%)5913(Top 121%)
Half13.11 mi0.68 mi16389-655544-405544-4017470(Top 66%)6153(Top 54%)6153(Top 126%)
25K15.53 mi2.42 mi16471-825622-785622-7816837(Top 63%)5910(Top 52%)5910(Top 121%)
30K18.64 mi3.11 mi16341+1305591+315591+3115889(Top 60%)5435(Top 48%)5435(Top 111%)
20M20.00 mi1.36 mi16149+1925484+1075484+10714122(Top 53%)4494(Top 39%)4494(Top 92%)
21M21.00 mi1.00 mi16082+675461+235461+2315574(Top 59%)5388(Top 47%)5388(Top 110%)
35K21.75 mi0.75 mi15972+1105417+445417+4413503(Top 51%)4302(Top 38%)4302(Top 88%)
23M23.00 mi1.25 mi15896+765398+195398+1914934(Top 56%)5134(Top 45%)5134(Top 105%)
24M24.00 mi1.00 mi15789+1075354+445354+4413687(Top 51%)4506(Top 39%)4506(Top 92%)
40K24.85 mi0.85 mi15753+365335+195335+1915069(Top 57%)5338(Top 47%)5338(Top 109%)
25.2M25.20 mi0.35 mi15765-125345-105345-1016219(Top 61%)5986(Top 52%)5986(Top 123%)
Finish26.22 mi1.02 mi15785-205367-225367-2216680(Top 63%)6193(Top 54%)6193(Top 127%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 62%
×21stories
+97ft-345ft

Overall

16531

Females

5610

F18-39

5610

5K→10K

3.1 - 6.2 mi

Top 58%
×5stories
+79ft-138ft

Overall

15455

Females

4941

F18-39

4941

10K→15K

6.2 - 9.3 mi

Top 62%
×3stories
+67ft-78ft

Overall

16531

Females

5610

F18-39

5610

15K→20K

9.3 - 12.4 mi

Top 64%
×5stories
+106ft-86ft

Overall

16979

Females

5913

F18-39

5913

20K→Half

12.4 - 13.1 mi

Top 66%
×2stories
+19ft-37ft

Overall

17470

Females

6153

F18-39

6153

Half→25K

13.1 - 15.5 mi

Top 63%
×4stories
+66ft-88ft

Overall

16837

Females

5910

F18-39

5910

25K→30K

15.5 - 18.6 mi

Top 60%
×9stories
+181ft-148ft

Overall

15889

Females

5435

F18-39

5435

30K→20M

18.6 - 20.0 mi

Top 53%
×5stories
+64ft-50ft

Overall

14122

Females

4494

F18-39

4494

20M→21M

20.0 - 21.0 mi

Top 59%
×8stories
+106ft-24ft

Overall

15574

Females

5388

F18-39

5388

21M→35K

21.0 - 21.8 mi

Top 51%
×7stories
+17ft-86ft

Overall

13503

Females

4302

F18-39

4302

35K→23M

21.8 - 23.0 mi

Top 56%
×5stories
+23ft-63ft

Overall

14934

Females

5134

F18-39

5134

23M→24M

23.0 - 24.0 mi

Top 51%
×6stories
+12ft-82ft

Overall

13687

Females

4506

F18-39

4506

24M→40K

24.0 - 24.9 mi

Top 57%
×1story
+6ft-20ft

Overall

15069

Females

5338

F18-39

5338

40K→25.2M

24.9 - 25.2 mi

Top 61%
×1story
+13ft-16ft

Overall

16219

Females

5986

F18-39

5986

25.2M→Finish

25.2 - 26.2 mi

Top 63%
×2stories
+22ft-21ft

Overall

16680

Females

6193

F18-39

6193

Passing Analysis

Category:
Athletes Passed
1976
Passed By
1491
Net Change
+485
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16270
5K → 10K556136+420#16270#15850
10K → 15K113342-229#15850#16079
15K → 20K105350-245#16079#16324
20K → Half2085-65#16324#16389
Half → 25K105187-82#16389#16471
25K → 30K245115+130#16471#16341
30K → 20M20210+192#16341#16149
20M → 21M10538+67#16149#16082
21M → 35K1199+110#16082#15972
35K → 23M12650+76#15972#15896
23M → 24M13427+107#15896#15789
24M → 40K7236+36#15789#15753
40K → 25.2M2638-12#15753#15765
25.2M → Finish4868-20#15765#15785
TOTALS19761491+485
📊

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