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BOSTON MARATHON 2023

Laura Stevenson

Bib: 16192•F

MI

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 36%
Gender (Female)
#0 / 11423
Top 17%
Division (F18-39)
#0 / 4884
Top 30%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:03
Rank: #8997
Start → 5K
23:03 | 7:25/mi
10K· 6.21 mi
45:37
Rank: #8738 (+259)
5K → 10K
22:34 | 7:16/mi
15K· 9.32 mi
1:08:30
Rank: #8839 (-101)
10K → 15K
22:53 | 7:22/mi
20K· 12.43 mi
1:31:51
Rank: #8932 (-93)
15K → 20K
23:21 | 7:31/mi
Half· 13.11 mi
1:36:58
Rank: #9001 (-69)
20K → Half
5:07 | 7:30/mi
25K· 15.53 mi
1:55:32
Rank: #9127 (-126)
Half → 25K
18:34 | 7:39/mi
30K· 18.64 mi
2:20:07
Rank: #9287 (-160)
25K → 30K
24:35 | 7:55/mi
20M
2:31:02
Rank: #9376 (-89)
30K → 20M
10:55 | 8:02/mi
21M
2:39:30
Rank: #9396 (-20)
20M → 21M
8:28 | 8:28/mi
35K· 21.75 mi
2:45:18
Rank: #9410 (-14)
21M → 35K
5:48 | 7:45/mi
23M
2:55:33
Rank: #9475 (-65)
35K → 23M
10:15 | 8:11/mi
24M
3:03:31
Rank: #9534 (-59)
23M → 24M
7:58 | 7:58/mi
40K· 24.85 mi
3:10:28
Rank: #9536 (-2)
24M → 40K
6:57 | 8:08/mi
25.2M
3:13:28
Rank: #9533 (+3)
40K → 25.2M
3:00 | 8:42/mi
Finish· 26.22 mi
3:21:33
Rank: #9600 (-67)
25.2M → Finish
8:05 | 7:56/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:58
Pace7:24 /mi
2nd Half
Distance13.11 mi
Time1:44:35
Pace7:59 /mi
📊Positive Split: 7.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:2123:037:2523:03
7:25
-
10K
6.21 mi11:35:5545:377:2022:34
7:16
-0:09
15K
9.32 mi11:58:481:08:307:2122:53
7:22
+0:06
20K
12.43 mi12:22:091:31:517:2323:21
7:31
+0:09
Half
13.11 mi12:27:161:36:587:245:07
7:30
-0:01
25K
15.53 mi12:45:501:55:327:2618:34
7:39
+0:09
30K
18.64 mi13:10:252:20:077:3124:35
7:55
+0:16
20M
20.00 mi13:21:202:31:027:3310:55
8:02
+0:07
21M
21.00 mi13:29:482:39:307:368:28
8:28
+0:26
35K
21.75 mi13:35:362:45:187:365:48
7:45
-0:43
23M
23.00 mi13:45:512:55:337:3810:15
8:11
+0:26
24M
24.00 mi13:53:493:03:317:397:58
7:58
-0:13
40K
24.85 mi14:00:463:10:287:406:57
8:08
+0:10
25.2M
25.20 mi14:03:463:13:287:413:00
8:42
+0:34
Finish
26.22 mi14:11:513:21:337:428:05
7:56
-0:46

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

7:16 /mi

Average Pace

7:42 /mi

Slowest Pace

8:42 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:41:58

80% of race

Time at Steady Pace

36:35

18% of race

Time at Slower Pace

3:00

1% of race

Average Pace: 7:41 /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 mi11:13:2123:037:2523:03
7:25
#8997
10K
6.21 mi11:35:5545:377:2022:34
7:16
#8738
15K
9.32 mi11:58:481:08:307:2122:53
7:22
#8839
20K
12.43 mi12:22:091:31:517:2323:21
7:31
#8932
Half
13.11 mi12:27:161:36:587:245:07
7:30
#9001
25K
15.53 mi12:45:501:55:327:2618:34
7:39
#9127
30K
18.64 mi13:10:252:20:077:3124:35
7:55
#9287
20M
20.00 mi13:21:202:31:027:3310:55
8:02
#9376
21M
21.00 mi13:29:482:39:307:368:28
8:28
#9396
35K
21.75 mi13:35:362:45:187:365:48
7:45
#9410
23M
23.00 mi13:45:512:55:337:3810:15
8:11
#9475
24M
24.00 mi13:53:493:03:317:397:58
7:58
#9534
40K
24.85 mi14:00:463:10:287:406:57
8:08
#9536
25.2M
25.20 mi14:03:463:13:287:413:00
8:42
#9533
Finish
26.22 mi14:11:513:21:337:428:05
7:56
#9600
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8997139613969072(Top 34%)1478(Top 13%)1478(Top 30%)
10K6.21 mi3.10 mi8738+2591303+931303+938607(Top 32%)1268(Top 11%)1268(Top 26%)
15K9.32 mi3.11 mi8839-1011364-611364-619072(Top 34%)1478(Top 13%)1478(Top 30%)
20K12.43 mi3.11 mi8932-931413-491413-499447(Top 35%)1669(Top 15%)1669(Top 34%)
Half13.11 mi0.68 mi9001-691444-311444-3110285(Top 39%)2018(Top 18%)2018(Top 41%)
25K15.53 mi2.42 mi9127-1261490-461490-469978(Top 37%)1990(Top 17%)1990(Top 41%)
30K18.64 mi3.11 mi9287-1601601-1111601-11110233(Top 38%)2268(Top 20%)2268(Top 46%)
20M20.00 mi1.36 mi9376-891664-631664-6310523(Top 40%)2490(Top 22%)2490(Top 51%)
21M21.00 mi1.00 mi9396-201692-281692-2810300(Top 39%)2527(Top 22%)2527(Top 52%)
35K21.75 mi0.75 mi9410-141718-261718-2610314(Top 39%)2503(Top 22%)2503(Top 51%)
23M23.00 mi1.25 mi9475-651755-371755-3711107(Top 42%)3061(Top 27%)3061(Top 63%)
24M24.00 mi1.00 mi9534-591812-571812-5711015(Top 41%)3088(Top 27%)3088(Top 63%)
40K24.85 mi0.85 mi9536-21842-301842-3010901(Top 41%)3087(Top 27%)3087(Top 63%)
25.2M25.20 mi0.35 mi9533+31852-101852-1010780(Top 40%)3054(Top 27%)3054(Top 63%)
Finish26.22 mi1.02 mi9600-671916-641916-6411629(Top 44%)3500(Top 31%)3500(Top 72%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21stories
+97ft-345ft

Overall

9072

Females

1478

F18-39

1478

5K→10K

3.1 - 6.2 mi

Top 32%
×5stories
+79ft-138ft

Overall

8607

Females

1268

F18-39

1268

10K→15K

6.2 - 9.3 mi

Top 34%
×3stories
+67ft-78ft

Overall

9072

Females

1478

F18-39

1478

15K→20K

9.3 - 12.4 mi

Top 35%
×5stories
+106ft-86ft

Overall

9447

Females

1669

F18-39

1669

20K→Half

12.4 - 13.1 mi

Top 39%
×2stories
+19ft-37ft

Overall

10285

Females

2018

F18-39

2018

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

9978

Females

1990

F18-39

1990

25K→30K

15.5 - 18.6 mi

Top 38%
×9stories
+181ft-148ft

Overall

10233

Females

2268

F18-39

2268

30K→20M

18.6 - 20.0 mi

Top 40%
×5stories
+64ft-50ft

Overall

10523

Females

2490

F18-39

2490

20M→21M

20.0 - 21.0 mi

Top 39%
×8stories
+106ft-24ft

Overall

10300

Females

2527

F18-39

2527

21M→35K

21.0 - 21.8 mi

Top 39%
×7stories
+17ft-86ft

Overall

10314

Females

2503

F18-39

2503

35K→23M

21.8 - 23.0 mi

Top 42%
×5stories
+23ft-63ft

Overall

11107

Females

3061

F18-39

3061

23M→24M

23.0 - 24.0 mi

Top 41%
×6stories
+12ft-82ft

Overall

11015

Females

3088

F18-39

3088

24M→40K

24.0 - 24.9 mi

Top 41%
×1story
+6ft-20ft

Overall

10901

Females

3087

F18-39

3087

40K→25.2M

24.9 - 25.2 mi

Top 40%
×1story
+13ft-16ft

Overall

10780

Females

3054

F18-39

3054

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2stories
+22ft-21ft

Overall

11629

Females

3500

F18-39

3500

Passing Analysis

Category:
Athletes Passed
1237*
Passed By
1840
Net Change
-603
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8997
5K → 10K406147+259#8997#8738
10K → 15K105206-101#8738#8839
15K → 20K100193-93#8839#8932
20K → Half877-69#8932#9001
Half → 25K73199-126#9001#9127
25K → 30K114274-160#9127#9287
30K → 20M51140-89#9287#9376
20M → 21M83103-20#9376#9396
21M → 35K4357-14#9396#9410
35K → 23M68133-65#9410#9475
23M → 24M50109-59#9475#9534
24M → 40K56*58-2#9534#9536
40K → 25.2M3229+3#9536#9533
25.2M → Finish48115-67#9533#9600
TOTALS1237*1840-603

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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