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BOSTON MARATHON 2023

Jan Brett

Bib: 15848•F

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F70-74)
#0 / 62
Top 21%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:37/mi
29:54
↑ 97↓ 3451.5%
10K· 6.21 mi
9:59/mi
1:00:54
↑ 79↓ 1380.4%
15K· 9.32 mi
10:14/mi
1:32:43
↑ 67↓ 78
20K· 12.43 mi
10:17/mi
2:04:40
↑ 106↓ 860.1%
Half· 13.11 mi
9:42/mi
2:11:17
↑ 19↓ 370.5%
25K· 15.53 mi
10:11/mi
2:35:59
↑ 66↓ 880.2%
30K· 18.64 mi
10:22/mi
3:08:11
↑ 181↓ 1480.2%
20M
10:43/mi
3:22:45
↑ 64↓ 500.2%
21M
11:23/mi
3:34:08
↑ 106↓ 241.6%
35K· 21.75 mi
9:37/mi
3:41:20
↑ 17↓ 861.7%
23M
10:22/mi
3:54:19
↑ 23↓ 630.6%
24M
9:52/mi
4:04:11
↓ 821.3%
40K· 24.85 mi
10:09/mi
4:12:52
↓ 200.3%
25.2M
11:04/mi
4:16:41
↑ 13↓ 160.2%
Finish· 26.22 mi
10:17/mi
4:27:10
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:11:17
Pace10:01 /mi
2nd Half
Distance13.11 mi
Time2:15:53
Pace10:22 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:00:3129:549:3729:54
9:37
-
10K
6.21 mi11:31:311:00:549:4831:00
9:59
+0:22
15K
9.32 mi12:03:201:32:439:5731:49
10:14
+0:15
20K
12.43 mi12:35:172:04:4010:0231:57
10:17
+0:03
Half
13.11 mi12:41:542:11:1710:016:37
9:42
-0:35
25K
15.53 mi13:06:362:35:5910:0224:42
10:11
+0:29
30K
18.64 mi13:38:483:08:1110:0632:12
10:22
+0:11
20M
20.00 mi13:53:223:22:4510:0814:34
10:43
+0:21
21M
21.00 mi14:04:453:34:0810:1211:23
11:23
+0:40
35K
21.75 mi14:11:573:41:2010:117:12
9:37
-1:46
23M
23.00 mi14:24:563:54:1910:1112:59
10:22
+0:45
24M
24.00 mi14:34:484:04:1110:109:52
9:52
-0:30
40K
24.85 mi14:43:294:12:5210:108:41
10:09
+0:17
25.2M
25.20 mi14:47:184:16:4110:113:49
11:04
+0:55
Finish
26.22 mi14:57:474:27:1010:1210:29
10:17
-0:47

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

9:37 /mi

Average Pace

10:12 /mi

Slowest Pace

11:23 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:57:24

89% of race

Time at Steady Pace

18:23

7% of race

Time at Slower Pace

11:23

4% of race

Average Pace: 10:11 /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 mi11:00:3129:549:3729:54
9:37
#22449
10K
6.21 mi11:31:311:00:549:4831:00
9:59
#23172
15K
9.32 mi12:03:201:32:439:5731:49
10:14
#23482
20K
12.43 mi12:35:172:04:4010:0231:57
10:17
#23497
Half
13.11 mi12:41:542:11:1710:016:37
9:42
#23441
25K
15.53 mi13:06:362:35:5910:0224:42
10:11
#23299
30K
18.64 mi13:38:483:08:1110:0632:12
10:22
#23034
20M
20.00 mi13:53:223:22:4510:0814:34
10:43
#22948
21M
21.00 mi14:04:453:34:0810:1211:23
11:23
#22881
35K
21.75 mi14:11:573:41:2010:117:12
9:37
#22784
23M
23.00 mi14:24:563:54:1910:1112:59
10:22
#22679
24M
24.00 mi14:34:484:04:1110:109:52
9:52
#22581
40K
24.85 mi14:43:294:12:5210:108:41
10:09
#22512
25.2M
25.20 mi14:47:184:16:4110:113:49
11:04
#22486
Finish
26.22 mi14:57:474:27:1010:1210:29
10:17
#22486
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF70-74Seg. OverallSeg. FemalesSeg. F70-74
5K3.11 mi3.11 mi224499109910923969(Top 90%)9877(Top 86%)9877(Top 15931%)
10K6.21 mi3.10 mi23172-7239454-3459454-34523642(Top 89%)9699(Top 85%)9699(Top 15644%)
15K9.32 mi3.11 mi23482-3109602-1489602-14823969(Top 90%)9877(Top 86%)9877(Top 15931%)
20K12.43 mi3.11 mi23497-159602960223446(Top 88%)9593(Top 84%)9593(Top 15473%)
Half13.11 mi0.68 mi23441+569570+329570+3222657(Top 85%)9167(Top 80%)9167(Top 14785%)
25K15.53 mi2.42 mi23299+1429511+599511+5922587(Top 85%)9166(Top 80%)9166(Top 14784%)
30K18.64 mi3.11 mi23034+2659401+1109401+11021925(Top 82%)8865(Top 78%)8865(Top 14298%)
20M20.00 mi1.36 mi22948+869370+319370+3122201(Top 83%)9094(Top 80%)9094(Top 14668%)
21M21.00 mi1.00 mi22881+679343+279343+2721670(Top 81%)8816(Top 77%)8816(Top 14219%)
35K21.75 mi0.75 mi22784+979303+409303+4020260(Top 76%)8098(Top 71%)8098(Top 13061%)
23M23.00 mi1.25 mi22679+1059248+559248+5521013(Top 79%)8535(Top 75%)8535(Top 13766%)
24M24.00 mi1.00 mi22581+989210+389210+3820441(Top 77%)8234(Top 72%)8234(Top 13281%)
40K24.85 mi0.85 mi22512+699176+349176+3420405(Top 77%)8286(Top 73%)8286(Top 13365%)
25.2M25.20 mi0.35 mi22486+269164+129164+1220648(Top 78%)8409(Top 74%)8409(Top 13563%)
Finish26.22 mi1.02 mi224869175-119175-1122533(Top 85%)9408(Top 82%)9408(Top 15174%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21story building
+97ft-345ft

Overall

23969

Females

9877

F70-74

9877

5K→10K

3.1 - 6.2 mi

Top 89%
×5story building
+79ft-138ft

Overall

23642

Females

9699

F70-74

9699

10K→15K

6.2 - 9.3 mi

Top 90%
×3story building
+67ft-78ft

Overall

23969

Females

9877

F70-74

9877

15K→20K

9.3 - 12.4 mi

Top 88%
×5story building
+106ft-86ft

Overall

23446

Females

9593

F70-74

9593

20K→Half

12.4 - 13.1 mi

Top 85%
×2story building
+19ft-37ft

Overall

22657

Females

9167

F70-74

9167

Half→25K

13.1 - 15.5 mi

Top 85%
×4story building
+66ft-88ft

Overall

22587

Females

9166

F70-74

9166

25K→30K

15.5 - 18.6 mi

Top 82%
×9story building
+181ft-148ft

Overall

21925

Females

8865

F70-74

8865

30K→20M

18.6 - 20.0 mi

Top 83%
×5story building
+64ft-50ft

Overall

22201

Females

9094

F70-74

9094

20M→21M

20.0 - 21.0 mi

Top 81%
×8story building
+106ft-24ft

Overall

21670

Females

8816

F70-74

8816

21M→35K

21.0 - 21.8 mi

Top 76%
×7story building
+17ft-86ft

Overall

20260

Females

8098

F70-74

8098

35K→23M

21.8 - 23.0 mi

Top 79%
×5story building
+23ft-63ft

Overall

21013

Females

8535

F70-74

8535

23M→24M

23.0 - 24.0 mi

Top 77%
×6story building
+12ft-82ft

Overall

20441

Females

8234

F70-74

8234

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

20405

Females

8286

F70-74

8286

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

20648

Females

8409

F70-74

8409

25.2M→Finish

25.2 - 26.2 mi

Top 85%
×2story building
+22ft-21ft

Overall

22533

Females

9408

F70-74

9408

Passing Analysis

Category:
Athletes Passed
1368
Passed By
1405
Net Change
-37
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22449
5K → 10K37760-723#22449#23172
10K → 15K41351-310#23172#23482
15K → 20K126141-15#23482#23497
20K → Half637+56#23497#23441
Half → 25K16927+142#23441#23299
25K → 30K28823+265#23299#23034
30K → 20M10721+86#23034#22948
20M → 21M8316+67#22948#22881
21M → 35K1036+97#22881#22784
35K → 23M1094+105#22784#22679
23M → 24M1013+98#22679#22581
24M → 40K712+69#22581#22512
40K → 25.2M293+26#22512#22486
25.2M → Finish41410#22486#22486
TOTALS13681405-37
📊

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