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BOSTON MARATHON 2023

Brittany Fletcher

MA

Bib: 29297 F

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

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:40/mi
26:57
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:41/mi
53:56
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
9:07/mi
1:22:16
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
10:33/mi
1:55:03
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
10:38/mi
2:02:18
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
12:05/mi
2:31:35
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
12:22/mi
3:09:59
↑ 181↓ 1480.2%
138 ft elev
20M
13:15/mi
3:28:00
↑ 64↓ 500.2%
148 ft elev
21M
17:24/mi
3:45:24
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
10:40/mi
3:53:23
↑ 17↓ 861.7%
156 ft elev
23M
11:56/mi
4:08:20
↑ 23↓ 630.6%
116 ft elev
24M
11:39/mi
4:19:59
↓ 821.3%
34 ft elev
40K· 24.85 mi
13:31/mi
4:31:32
↓ 200.3%
20 ft elev
25.2M
12:14/mi
4:35:45
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
10:35/mi
4:46:32
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
2:02:189:20 /mi⚡ faster
2nd Half
2:44:1412:32 /mi+34.3%
Positive split — 34.3% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:52:1526:578:4026:57
8:40
-
10K
6.21 mi12:19:1453:568:4126:59
8:41
+0:01
15K
9.32 mi12:47:341:22:168:5028:20
9:07
+0:26
20K
12.43 mi13:20:211:55:039:1532:47
10:33
+1:26
Half
13.11 mi13:27:362:02:189:207:15
10:38
+0:05
25K
15.53 mi13:56:532:31:359:4529:17
12:05
+1:27
30K
18.64 mi14:35:173:09:5910:1138:24
12:22
+0:17
20M
20.00 mi14:53:183:28:0010:2418:01
13:15
+0:53
21M
21.00 mi15:10:423:45:2410:4417:24
17:24
+4:09
35K
21.75 mi15:18:413:53:2310:447:59
10:40
-6:44
23M
23.00 mi15:33:384:08:2010:4814:57
11:56
+1:16
24M
24.00 mi15:45:174:19:5910:5011:39
11:39
-0:17
40K
24.85 mi15:56:504:31:3210:5511:33
13:31
+1:52
25.2M
25.20 mi16:01:034:35:4510:574:13
12:14
-1:17
Finish
26.22 mi16:11:504:46:3210:5610:47
10:35
-1:39

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

8:40 /mi

Average Pace

10:56 /mi

Slowest Pace

17:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Segment Time Comparison

Time at Faster Pace

1:55:03

40% of race

Time at Steady Pace

2:04:31

43% of race

Time at Slower Pace

46:58

16% of race

Average Pace: 10:56 /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 mi11:52:1526:578:4026:57
8:40
#18735
10K
6.21 mi12:19:1453:568:4126:59
8:41
#19001
15K
9.32 mi12:47:341:22:168:5028:20
9:07
#19741
20K
12.43 mi13:20:211:55:039:1532:47
10:33
#21380
Half
13.11 mi13:27:362:02:189:207:15
10:38
#21599
25K
15.53 mi13:56:532:31:359:4529:17
12:05
#22611
30K
18.64 mi14:35:173:09:5910:1138:24
12:22
#23230
20M
20.00 mi14:53:183:28:0010:2418:01
13:15
#23483
21M
21.00 mi15:10:423:45:2410:4417:24
17:24
#23920
35K
21.75 mi15:18:413:53:2310:447:59
10:40
#23885
23M
23.00 mi15:33:384:08:2010:4814:57
11:56
#23912
24M
24.00 mi15:45:174:19:5910:5011:39
11:39
#23931
40K
24.85 mi15:56:504:31:3210:5511:33
13:31
#24004
25.2M
25.20 mi16:01:034:35:4510:574:13
12:14
#23991
Finish
26.22 mi16:11:504:46:3210:5610:47
10:35
#23962
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi18735703170312102882528252
10K6.21 mi3.10 mi19001-2667151-1207151-1201935573017301
15K9.32 mi3.11 mi19741-7407588-4377588-4372102882528252
20K12.43 mi3.11 mi21380-16398483-8958483-8952392598579857
Half13.11 mi0.68 mi21599-2198607-1248607-124244271016510165
25K15.53 mi2.42 mi22611-10129157-5509157-550252201063810638
30K18.64 mi3.11 mi23230-6199501-3449501-344248691049310493
20M20.00 mi1.36 mi23483-2539651-1509651-150253671078810788
21M21.00 mi1.00 mi23920-4379895-2449895-244264991135711357
35K21.75 mi0.75 mi23885+359883+129883+122272094389438
23M23.00 mi1.25 mi23912-279903-209903-20239241007910079
24M24.00 mi1.00 mi23931-199926-239926-23240831020310203
40K24.85 mi0.85 mi24004-739975-499975-49253581084610846
25.2M25.20 mi0.35 mi23991+139970+59970+52289196049604
Finish26.22 mi1.02 mi23962+299962+89962+82318497449744

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21story building
+97ft-345ft

Overall

21028

Females

8252

F18-39

8252

5K→10K

3.1 - 6.2 mi

Top 73%
×5story building
+79ft-138ft

Overall

19355

Females

7301

F18-39

7301

10K→15K

6.2 - 9.3 mi

Top 79%
×3story building
+67ft-78ft

Overall

21028

Females

8252

F18-39

8252

15K→20K

9.3 - 12.4 mi

Top 90%
×5story building
+106ft-86ft

Overall

23925

Females

9857

F18-39

9857

20K→Half

12.4 - 13.1 mi

Top 92%
×2story building
+19ft-37ft

Overall

24427

Females

10165

F18-39

10165

Half→25K

13.1 - 15.5 mi

Top 95%
×4story building
+66ft-88ft

Overall

25220

Females

10638

F18-39

10638

25K→30K

15.5 - 18.6 mi

Top 93%
×9story building
+181ft-148ft

Overall

24869

Females

10493

F18-39

10493

30K→20M

18.6 - 20.0 mi

Top 95%
×5story building
+64ft-50ft

Overall

25367

Females

10788

F18-39

10788

20M→21M

20.0 - 21.0 mi

Top 100%
×8story building
+106ft-24ft

Overall

26499

Females

11357

F18-39

11357

21M→35K

21.0 - 21.8 mi

Top 85%
×7story building
+17ft-86ft

Overall

22720

Females

9438

F18-39

9438

35K→23M

21.8 - 23.0 mi

Top 90%
×5story building
+23ft-63ft

Overall

23924

Females

10079

F18-39

10079

23M→24M

23.0 - 24.0 mi

Top 90%
×6story building
+12ft-82ft

Overall

24083

Females

10203

F18-39

10203

24M→40K

24.0 - 24.9 mi

Top 95%
×1story
+6ft-20ft

Overall

25358

Females

10846

F18-39

10846

40K→25.2M

24.9 - 25.2 mi

Top 86%
×1story
+13ft-16ft

Overall

22891

Females

9604

F18-39

9604

25.2M→Finish

25.2 - 26.2 mi

Top 87%
×2story building
+22ft-21ft

Overall

23184

Females

9744

F18-39

9744

Passing Analysis

Category:
Athletes Passed
465
Passed By
5692
Net Change
-5227
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18735
5K → 10K225491-266#18735#19001
10K → 15K29769-740#19001#19741
15K → 20K81647-1639#19741#21380
20K → Half2221-219#21380#21599
Half → 25K61018-1012#21599#22611
25K → 30K17636-619#22611#23230
30K → 20M12265-253#23230#23483
20M → 21M0437-437#23483#23920
21M → 35K4510+35#23920#23885
35K → 23M3259-27#23885#23912
23M → 24M1938-19#23912#23931
24M → 40K1487-73#23931#24004
40K → 25.2M163+13#24004#23991
25.2M → Finish4011+29#23991#23962
TOTALS4655692-5227

Passing Charts

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