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BOSTON MARATHON 2023

Jennifer Jackson

Bib: 16887•F

DC

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 43%
Gender (Female)
#0 / 11423
Top 24%
Division (F18-39)
#0 / 4884
Top 41%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:51
Rank: #8490
Start → 5K
7:21/mi
22:51 split
10K· 6.21 mi
45:47
Rank: #8967 (-477)
5K → 10K
7:23/mi
22:56 split
15K· 9.32 mi
1:08:50
Rank: #9086 (-119)
10K → 15K
7:25/mi
23:03 split
20K· 12.43 mi
1:32:18
Rank: #9210 (-124)
15K → 20K
7:33/mi
23:28 split
Half· 13.11 mi
1:37:23
Rank: #9238 (-28)
20K → Half
7:27/mi
5:05 split
25K· 15.53 mi
1:56:11
Rank: #9475 (-237)
Half → 25K
7:45/mi
18:48 split
30K· 18.64 mi
2:20:57
Rank: #9675 (-200)
25K → 30K
7:58/mi
24:46 split
20M
2:32:32
Rank: #9950 (-275)
30K → 20M
8:32/mi
11:35 split
21M
2:41:04
Rank: #9981 (-31)
20M → 21M
8:32/mi
8:32 split
35K· 21.75 mi
2:47:12
Rank: #10098 (-117)
21M → 35K
8:12/mi
6:08 split
23M
2:58:35
Rank: #10523 (-425)
35K → 23M
9:05/mi
11:23 split
24M
3:07:47
Rank: #10924 (-401)
23M → 24M
9:12/mi
9:12 split
40K· 24.85 mi
3:15:36
Rank: #11212 (-288)
24M → 40K
9:09/mi
7:49 split
25.2M
3:18:47
Rank: #11260 (-48)
40K → 25.2M
9:14/mi
3:11 split
Finish· 26.22 mi
3:27:13
Rank: #11367 (-107)
25.2M → Finish
8:17/mi
8:26 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:23
Pace7:26 /mi
2nd Half
Distance13.11 mi
Time1:49:50
Pace8:23 /mi
📊Positive Split: 12.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:1122:517:2122:51
7:21
-
10K
6.21 mi11:36:0745:477:2222:56
7:23
+0:02
15K
9.32 mi11:59:101:08:507:2323:03
7:25
+0:02
20K
12.43 mi12:22:381:32:187:2623:28
7:33
+0:08
Half
13.11 mi12:27:431:37:237:265:05
7:27
-0:06
25K
15.53 mi12:46:311:56:117:2918:48
7:45
+0:18
30K
18.64 mi13:11:172:20:577:3424:46
7:58
+0:13
20M
20.00 mi13:22:522:32:327:3811:35
8:32
+0:34
21M
21.00 mi13:31:242:41:047:408:32
8:32
0:00
35K
21.75 mi13:37:322:47:127:416:08
8:12
-0:20
23M
23.00 mi13:48:552:58:357:4611:23
9:05
+0:53
24M
24.00 mi13:58:073:07:477:499:12
9:12
+0:07
40K
24.85 mi14:05:563:15:367:527:49
9:09
-0:03
25.2M
25.20 mi14:09:073:18:477:533:11
9:14
+0:05
Finish
26.22 mi14:17:333:27:137:558:26
8:17
-0:57

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

7:21 /mi

Average Pace

7:55 /mi

Slowest Pace

9:14 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:11

56% of race

Time at Steady Pace

59:27

29% of race

Time at Slower Pace

31:35

15% of race

Average Pace: 7:54 /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 mi11:13:1122:517:2122:51
7:21
#8490
10K
6.21 mi11:36:0745:477:2222:56
7:23
#8967
15K
9.32 mi11:59:101:08:507:2323:03
7:25
#9086
20K
12.43 mi12:22:381:32:187:2623:28
7:33
#9210
Half
13.11 mi12:27:431:37:237:265:05
7:27
#9238
25K
15.53 mi12:46:311:56:117:2918:48
7:45
#9475
30K
18.64 mi13:11:172:20:577:3424:46
7:58
#9675
20M
20.00 mi13:22:522:32:327:3811:35
8:32
#9950
21M
21.00 mi13:31:242:41:047:408:32
8:32
#9981
35K
21.75 mi13:37:322:47:127:416:08
8:12
#10098
23M
23.00 mi13:48:552:58:357:4611:23
9:05
#10523
24M
24.00 mi13:58:073:07:477:499:12
9:12
#10924
40K
24.85 mi14:05:563:15:367:527:49
9:09
#11212
25.2M
25.20 mi14:09:073:18:477:533:11
9:14
#11260
Finish
26.22 mi14:17:333:27:137:558:26
8:17
#11367
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8490118811889531(Top 36%)1637(Top 14%)1637(Top 34%)
10K6.21 mi3.10 mi8967-4771400-2121400-2129467(Top 36%)1614(Top 14%)1614(Top 33%)
15K9.32 mi3.11 mi9086-1191464-641464-649531(Top 36%)1637(Top 14%)1637(Top 34%)
20K12.43 mi3.11 mi9210-1241518-541518-549744(Top 37%)1807(Top 16%)1807(Top 37%)
Half13.11 mi0.68 mi9238-281538-201538-209911(Top 37%)1866(Top 16%)1866(Top 38%)
25K15.53 mi2.42 mi9475-2371635-971635-9710757(Top 40%)2370(Top 21%)2370(Top 49%)
30K18.64 mi3.11 mi9675-2001752-1171752-11710668(Top 40%)2478(Top 22%)2478(Top 51%)
20M20.00 mi1.36 mi9950-2751897-1451897-14513816(Top 52%)4315(Top 38%)4315(Top 88%)
21M21.00 mi1.00 mi9981-311941-441941-4410631(Top 40%)2702(Top 24%)2702(Top 55%)
35K21.75 mi0.75 mi10098-1172016-752016-7513415(Top 50%)4214(Top 37%)4214(Top 86%)
23M23.00 mi1.25 mi10523-4252260-2442260-24416497(Top 62%)6015(Top 53%)6015(Top 123%)
24M24.00 mi1.00 mi10924-4012486-2262486-22618059(Top 68%)6929(Top 61%)6929(Top 142%)
40K24.85 mi0.85 mi11212-2882662-1762662-17616830(Top 63%)6295(Top 55%)6295(Top 129%)
25.2M25.20 mi0.35 mi11260-482701-392701-3913813(Top 52%)4624(Top 40%)4624(Top 95%)
Finish26.22 mi1.02 mi11367-1072777-762777-7613949(Top 52%)4700(Top 41%)4700(Top 96%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 36%
×21story building
+97ft-345ft

Overall

9531

Females

1637

F18-39

1637

5K→10K

3.1 - 6.2 mi

Top 36%
×5story building
+79ft-138ft

Overall

9467

Females

1614

F18-39

1614

10K→15K

6.2 - 9.3 mi

Top 36%
×3story building
+67ft-78ft

Overall

9531

Females

1637

F18-39

1637

15K→20K

9.3 - 12.4 mi

Top 37%
×5story building
+106ft-86ft

Overall

9744

Females

1807

F18-39

1807

20K→Half

12.4 - 13.1 mi

Top 37%
×2story building
+19ft-37ft

Overall

9911

Females

1866

F18-39

1866

Half→25K

13.1 - 15.5 mi

Top 40%
×4story building
+66ft-88ft

Overall

10757

Females

2370

F18-39

2370

25K→30K

15.5 - 18.6 mi

Top 40%
×9story building
+181ft-148ft

Overall

10668

Females

2478

F18-39

2478

30K→20M

18.6 - 20.0 mi

Top 52%
×5story building
+64ft-50ft

Overall

13816

Females

4315

F18-39

4315

20M→21M

20.0 - 21.0 mi

Top 40%
×8story building
+106ft-24ft

Overall

10631

Females

2702

F18-39

2702

21M→35K

21.0 - 21.8 mi

Top 50%
×7story building
+17ft-86ft

Overall

13415

Females

4214

F18-39

4214

35K→23M

21.8 - 23.0 mi

Top 62%
×5story building
+23ft-63ft

Overall

16497

Females

6015

F18-39

6015

23M→24M

23.0 - 24.0 mi

Top 68%
×6story building
+12ft-82ft

Overall

18059

Females

6929

F18-39

6929

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

16830

Females

6295

F18-39

6295

40K→25.2M

24.9 - 25.2 mi

Top 52%
×1story
+13ft-16ft

Overall

13813

Females

4624

F18-39

4624

25.2M→Finish

25.2 - 26.2 mi

Top 52%
×2story building
+22ft-21ft

Overall

13949

Females

4700

F18-39

4700

Passing Analysis

Category:
Athletes Passed
737*
Passed By
3611
Net Change
-2877
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8490
5K → 10K101578-477#8490#8967
10K → 15K106225-119#8967#9086
15K → 20K94218-124#9086#9210
20K → Half1745-28#9210#9238
Half → 25K59296-237#9238#9475
25K → 30K115*315-200#9475#9675
30K → 20M35310-275#9675#9950
20M → 21M73103-31#9950#9981
21M → 35K18133-117#9981#10098
35K → 23M23448-425#10098#10523
23M → 24M16417-401#10523#10924
24M → 40K16304-288#10924#11212
40K → 25.2M1967-48#11212#11260
25.2M → Finish45152-107#11260#11367
TOTALS737*3611-2877

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

📊

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