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BOSTON MARATHON 2023

Jennifer Blair

Bib: 26854•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 (F40-44)
#0 / 1878
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
9:26/mi
29:20
↑ 97↓ 3451.5%
10K· 6.21 mi
9:50/mi
59:52
↑ 79↓ 1380.4%
15K· 9.32 mi
10:16/mi
1:31:45
↑ 67↓ 78
20K· 12.43 mi
10:42/mi
2:05:01
↑ 106↓ 860.1%
Half· 13.11 mi
10:54/mi
2:12:27
↑ 19↓ 370.5%
25K· 15.53 mi
11:44/mi
2:40:54
↑ 66↓ 880.2%
30K· 18.64 mi
11:45/mi
3:17:23
↑ 181↓ 1480.2%
20M
12:28/mi
3:34:19
↑ 64↓ 500.2%
21M
13:04/mi
3:47:23
↑ 106↓ 241.6%
35K· 21.75 mi
12:18/mi
3:56:35
↑ 17↓ 861.7%
23M
11:28/mi
4:10:57
↑ 23↓ 630.6%
24M
11:22/mi
4:22:19
↓ 821.3%
40K· 24.85 mi
11:31/mi
4:32:10
↓ 200.3%
25.2M
11:59/mi
4:36:18
↑ 13↓ 160.2%
Finish· 26.22 mi
10:51/mi
4:47:21
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:12:27
Pace10:06 /mi
2nd Half
Distance13.11 mi
Time2:34:54
Pace11:49 /mi
📊Positive Split: 16.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:45:5229:209:2629:20
9:26
-
10K
6.21 mi12:16:2459:529:3830:32
9:50
+0:24
15K
9.32 mi12:48:171:31:459:5131:53
10:16
+0:26
20K
12.43 mi13:21:332:05:0110:0433:16
10:42
+0:26
Half
13.11 mi13:28:592:12:2710:067:26
10:54
+0:12
25K
15.53 mi13:57:262:40:5410:2128:27
11:44
+0:50
30K
18.64 mi14:33:553:17:2310:3536:29
11:45
+0:01
20M
20.00 mi14:50:513:34:1910:4316:56
12:28
+0:43
21M
21.00 mi15:03:553:47:2310:5013:04
13:04
+0:36
35K
21.75 mi15:13:073:56:3510:539:12
12:18
-0:46
23M
23.00 mi15:27:294:10:5710:5514:22
11:28
-0:50
24M
24.00 mi15:38:514:22:1910:5611:22
11:22
-0:06
40K
24.85 mi15:48:424:32:1010:579:51
11:31
+0:09
25.2M
25.20 mi15:52:504:36:1810:584:08
11:59
+0:28
Finish
26.22 mi16:03:534:47:2110:5811:03
10:51
-1:08

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

9:26 /mi

Average Pace

10:58 /mi

Slowest Pace

13:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23:30

50% of race

Time at Steady Pace

1:40:31

35% of race

Time at Slower Pace

43:20

15% of race

Average Pace: 10:58 /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 mi11:45:5229:209:2629:20
9:26
#21927
10K
6.21 mi12:16:2459:529:3830:32
9:50
#22712
15K
9.32 mi12:48:171:31:459:5131:53
10:16
#23250
20K
12.43 mi13:21:332:05:0110:0433:16
10:42
#23555
Half
13.11 mi13:28:592:12:2710:067:26
10:54
#23638
25K
15.53 mi13:57:262:40:5410:2128:27
11:44
#23883
30K
18.64 mi14:33:553:17:2310:3536:29
11:45
#23979
20M
20.00 mi14:50:513:34:1910:4316:56
12:28
#24054
21M
21.00 mi15:03:553:47:2310:5013:04
13:04
#24078
35K
21.75 mi15:13:073:56:3510:539:12
12:18
#24138
23M
23.00 mi15:27:294:10:5710:5514:22
11:28
#24085
24M
24.00 mi15:38:514:22:1910:5611:22
11:22
#24068
40K
24.85 mi15:48:424:32:1010:579:51
11:31
#24038
25.2M
25.20 mi15:52:504:36:1810:584:08
11:59
#24029
Finish
26.22 mi16:03:534:47:2110:5811:03
10:51
#24017
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi219278849884924009(Top 90%)9894(Top 87%)9894(Top 527%)
10K6.21 mi3.10 mi22712-7859206-3579206-35723337(Top 88%)9533(Top 83%)9533(Top 508%)
15K9.32 mi3.11 mi23250-5389486-2809486-28024009(Top 90%)9894(Top 87%)9894(Top 527%)
20K12.43 mi3.11 mi23555-3059636-1509636-15024190(Top 91%)10021(Top 88%)10021(Top 534%)
Half13.11 mi0.68 mi23638-839689-539689-5324798(Top 93%)10373(Top 91%)10373(Top 552%)
25K15.53 mi2.42 mi23883-2459840-1519840-15124923(Top 94%)10474(Top 92%)10474(Top 558%)
30K18.64 mi3.11 mi23979-969904-649904-6424185(Top 91%)10116(Top 89%)10116(Top 539%)
20M20.00 mi1.36 mi24054-759964-609964-6024703(Top 93%)10447(Top 91%)10447(Top 556%)
21M21.00 mi1.00 mi24078-249989-259989-2524168(Top 91%)10185(Top 89%)10185(Top 542%)
35K21.75 mi0.75 mi24138-6010029-4010029-4024976(Top 94%)10642(Top 93%)10642(Top 567%)
23M23.00 mi1.25 mi24085+5310009+2010009+2023212(Top 87%)9701(Top 85%)9701(Top 517%)
24M24.00 mi1.00 mi24068+1710007+210007+223694(Top 89%)9998(Top 88%)9998(Top 532%)
40K24.85 mi0.85 mi24038+309995+129995+1223246(Top 87%)9796(Top 86%)9796(Top 522%)
25.2M25.20 mi0.35 mi24029+99991+49991+422510(Top 85%)9410(Top 82%)9410(Top 501%)
Finish26.22 mi1.02 mi24017+129989+29989+223699(Top 89%)10010(Top 88%)10010(Top 533%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21story building
+97ft-345ft

Overall

24009

Females

9894

F40-44

9894

5K→10K

3.1 - 6.2 mi

Top 88%
×5story building
+79ft-138ft

Overall

23337

Females

9533

F40-44

9533

10K→15K

6.2 - 9.3 mi

Top 90%
×3story building
+67ft-78ft

Overall

24009

Females

9894

F40-44

9894

15K→20K

9.3 - 12.4 mi

Top 91%
×5story building
+106ft-86ft

Overall

24190

Females

10021

F40-44

10021

20K→Half

12.4 - 13.1 mi

Top 93%
×2story building
+19ft-37ft

Overall

24798

Females

10373

F40-44

10373

Half→25K

13.1 - 15.5 mi

Top 94%
×4story building
+66ft-88ft

Overall

24923

Females

10474

F40-44

10474

25K→30K

15.5 - 18.6 mi

Top 91%
×9story building
+181ft-148ft

Overall

24185

Females

10116

F40-44

10116

30K→20M

18.6 - 20.0 mi

Top 93%
×5story building
+64ft-50ft

Overall

24703

Females

10447

F40-44

10447

20M→21M

20.0 - 21.0 mi

Top 91%
×8story building
+106ft-24ft

Overall

24168

Females

10185

F40-44

10185

21M→35K

21.0 - 21.8 mi

Top 94%
×7story building
+17ft-86ft

Overall

24976

Females

10642

F40-44

10642

35K→23M

21.8 - 23.0 mi

Top 87%
×5story building
+23ft-63ft

Overall

23212

Females

9701

F40-44

9701

23M→24M

23.0 - 24.0 mi

Top 89%
×6story building
+12ft-82ft

Overall

23694

Females

9998

F40-44

9998

24M→40K

24.0 - 24.9 mi

Top 87%
×1story
+6ft-20ft

Overall

23246

Females

9796

F40-44

9796

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

22510

Females

9410

F40-44

9410

25.2M→Finish

25.2 - 26.2 mi

Top 89%
×2story building
+22ft-21ft

Overall

23699

Females

10010

F40-44

10010

Passing Analysis

Category:
Athletes Passed
470
Passed By
2560
Net Change
-2090
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21927
5K → 10K42827-785#21927#22712
10K → 15K25563-538#22712#23250
15K → 20K37342-305#23250#23555
20K → Half588-83#23555#23638
Half → 25K30275-245#23638#23883
25K → 30K74170-96#23883#23979
30K → 20M29104-75#23979#24054
20M → 21M2852-24#24054#24078
21M → 35K767-60#24078#24138
35K → 23M6714+53#24138#24085
23M → 24M4225+17#24085#24068
24M → 40K399+30#24068#24038
40K → 25.2M134+9#24038#24029
25.2M → Finish3220+12#24029#24017
TOTALS4702560-2090
📊

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