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BOSTON MARATHON 2023

Kerry Jackson

Bib: 21693•F

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F45-49)
#0 / 1817
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
9:18/mi
28:55
↑ 97↓ 3451.5%
10K· 6.21 mi
9:27/mi
58:18
↑ 79↓ 1380.4%
15K· 9.32 mi
10:15/mi
1:30:09
↑ 67↓ 78
20K· 12.43 mi
10:45/mi
2:03:34
↑ 106↓ 860.1%
Half· 13.11 mi
10:19/mi
2:10:36
↑ 19↓ 370.5%
25K· 15.53 mi
10:43/mi
2:36:35
↑ 66↓ 880.2%
30K· 18.64 mi
11:18/mi
3:11:41
↑ 181↓ 1480.2%
20M
11:21/mi
3:27:06
↑ 64↓ 500.2%
21M
12:49/mi
3:39:55
↑ 106↓ 241.6%
35K· 21.75 mi
13:42/mi
3:50:10
↑ 17↓ 861.7%
23M
14:03/mi
4:07:45
↑ 23↓ 630.6%
24M
14:59/mi
4:22:44
↓ 821.3%
40K· 24.85 mi
11:58/mi
4:32:58
↓ 200.3%
25.2M
12:08/mi
4:37:09
↑ 13↓ 160.2%
Finish· 26.22 mi
11:14/mi
4:48:36
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:10:36
Pace9:58 /mi
2nd Half
Distance13.11 mi
Time2:38:00
Pace12:03 /mi
📊Positive Split: 21.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:2628:559:1828:55
9:18
-
10K
6.21 mi11:53:4958:189:2329:23
9:27
+0:09
15K
9.32 mi12:25:401:30:099:4031:51
10:15
+0:48
20K
12.43 mi12:59:052:03:349:5733:25
10:45
+0:30
Half
13.11 mi13:06:072:10:369:587:02
10:19
-0:26
25K
15.53 mi13:32:062:36:3510:0525:59
10:43
+0:24
30K
18.64 mi14:07:123:11:4110:1735:06
11:18
+0:35
20M
20.00 mi14:22:373:27:0610:2115:25
11:21
+0:03
21M
21.00 mi14:35:263:39:5510:2812:49
12:49
+1:28
35K
21.75 mi14:45:413:50:1010:3510:15
13:42
+0:53
23M
23.00 mi15:03:164:07:4510:4617:35
14:03
+0:21
24M
24.00 mi15:18:154:22:4410:5714:59
14:59
+0:56
40K
24.85 mi15:28:294:32:5810:5910:14
11:58
-3:01
25.2M
25.20 mi15:32:404:37:0911:004:11
12:08
+0:10
Finish
26.22 mi15:44:074:48:3611:0111:27
11:14
-0:54

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

9:18 /mi

Average Pace

11:01 /mi

Slowest Pace

14:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:37:11

34% of race

Time at Steady Pace

2:11:36

46% of race

Time at Slower Pace

59:49

21% of race

Average Pace: 11:00 /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 mi11:24:2628:559:1828:55
9:18
#21558
10K
6.21 mi11:53:4958:189:2329:23
9:27
#22005
15K
9.32 mi12:25:401:30:099:4031:51
10:15
#22794
20K
12.43 mi12:59:052:03:349:5733:25
10:45
#23306
Half
13.11 mi13:06:072:10:369:587:02
10:19
#23334
25K
15.53 mi13:32:062:36:3510:0525:59
10:43
#23387
30K
18.64 mi14:07:123:11:4110:1735:06
11:18
#23407
20M
20.00 mi14:22:373:27:0610:2115:25
11:21
#23390
21M
21.00 mi14:35:263:39:5510:2812:49
12:49
#23436
35K
21.75 mi14:45:413:50:1010:3510:15
13:42
#23599
23M
23.00 mi15:03:164:07:4510:4617:35
14:03
#23856
24M
24.00 mi15:18:154:22:4410:5714:59
14:59
#24096
40K
24.85 mi15:28:294:32:5810:5910:14
11:58
#24078
25.2M
25.20 mi15:32:404:37:0911:004:11
12:08
#24068
Finish
26.22 mi15:44:074:48:3611:0111:27
11:14
#24087
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi215588673867323992(Top 90%)9886(Top 87%)9886(Top 544%)
10K6.21 mi3.10 mi22005-4478857-1848857-18422398(Top 84%)9033(Top 79%)9033(Top 497%)
15K9.32 mi3.11 mi22794-7899230-3739230-37323992(Top 90%)9886(Top 87%)9886(Top 544%)
20K12.43 mi3.11 mi23306-5129511-2819511-28124261(Top 91%)10069(Top 88%)10069(Top 554%)
Half13.11 mi0.68 mi23334-289524-139524-1323879(Top 90%)9852(Top 86%)9852(Top 542%)
25K15.53 mi2.42 mi23387-539557-339557-3323546(Top 88%)9700(Top 85%)9700(Top 534%)
30K18.64 mi3.11 mi23407-209593-369593-3623582(Top 89%)9774(Top 86%)9774(Top 538%)
20M20.00 mi1.36 mi23390+179599-69599-623265(Top 87%)9663(Top 85%)9663(Top 532%)
21M21.00 mi1.00 mi23436-469632-339632-3323862(Top 90%)10016(Top 88%)10016(Top 551%)
35K21.75 mi0.75 mi23599-1639721-899721-8926017(Top 98%)11142(Top 98%)11142(Top 613%)
23M23.00 mi1.25 mi23856-2579875-1549875-15425854(Top 97%)11069(Top 97%)11069(Top 609%)
24M24.00 mi1.00 mi24096-24010023-14810023-14826383(Top 99%)11327(Top 99%)11327(Top 623%)
40K24.85 mi0.85 mi24078+18100231002323864(Top 90%)10113(Top 89%)10113(Top 557%)
25.2M25.20 mi0.35 mi24068+1010017+610017+622760(Top 85%)9537(Top 83%)9537(Top 525%)
Finish26.22 mi1.02 mi24087-1910033-1610033-1624349(Top 91%)10332(Top 90%)10332(Top 569%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 90%
×21story building
+97ft-345ft

Overall

23992

Females

9886

F45-49

9886

5K→10K

3.1 - 6.2 mi

Top 84%
×5story building
+79ft-138ft

Overall

22398

Females

9033

F45-49

9033

10K→15K

6.2 - 9.3 mi

Top 90%
×3story building
+67ft-78ft

Overall

23992

Females

9886

F45-49

9886

15K→20K

9.3 - 12.4 mi

Top 91%
×5story building
+106ft-86ft

Overall

24261

Females

10069

F45-49

10069

20K→Half

12.4 - 13.1 mi

Top 90%
×2story building
+19ft-37ft

Overall

23879

Females

9852

F45-49

9852

Half→25K

13.1 - 15.5 mi

Top 88%
×4story building
+66ft-88ft

Overall

23546

Females

9700

F45-49

9700

25K→30K

15.5 - 18.6 mi

Top 89%
×9story building
+181ft-148ft

Overall

23582

Females

9774

F45-49

9774

30K→20M

18.6 - 20.0 mi

Top 87%
×5story building
+64ft-50ft

Overall

23265

Females

9663

F45-49

9663

20M→21M

20.0 - 21.0 mi

Top 90%
×8story building
+106ft-24ft

Overall

23862

Females

10016

F45-49

10016

21M→35K

21.0 - 21.8 mi

Top 98%
×7story building
+17ft-86ft

Overall

26017

Females

11142

F45-49

11142

35K→23M

21.8 - 23.0 mi

Top 97%
×5story building
+23ft-63ft

Overall

25854

Females

11069

F45-49

11069

23M→24M

23.0 - 24.0 mi

Top 99%
×6story building
+12ft-82ft

Overall

26383

Females

11327

F45-49

11327

24M→40K

24.0 - 24.9 mi

Top 90%
×1story
+6ft-20ft

Overall

23864

Females

10113

F45-49

10113

40K→25.2M

24.9 - 25.2 mi

Top 85%
×1story
+13ft-16ft

Overall

22760

Females

9537

F45-49

9537

25.2M→Finish

25.2 - 26.2 mi

Top 91%
×2story building
+22ft-21ft

Overall

24349

Females

10332

F45-49

10332

Passing Analysis

Category:
Athletes Passed
503
Passed By
3032
Net Change
-2529
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21558
5K → 10K106553-447#21558#22005
10K → 15K19808-789#22005#22794
15K → 20K26538-512#22794#23306
20K → Half1139-28#23306#23334
Half → 25K71124-53#23334#23387
25K → 30K107127-20#23387#23407
30K → 20M5740+17#23407#23390
20M → 21M2874-46#23390#23436
21M → 35K3166-163#23436#23599
35K → 23M6263-257#23599#23856
23M → 24M0240-240#23856#24096
24M → 40K3719+18#24096#24078
40K → 25.2M144+10#24078#24068
25.2M → Finish1837-19#24068#24087
TOTALS5033032-2529
📊

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