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BOSTON MARATHON 2023

Jacqueline James

Bib: 18143•F

NJ

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 38%
Gender (Female)
#0 / 11423
Top 19%
Division (F18-39)
#0 / 4884
Top 33%
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
8:00/mi
24:50
↑ 97↓ 3451.5%
10K· 6.21 mi
7:49/mi
49:07
↑ 79↓ 1380.4%
15K· 9.32 mi
7:50/mi
1:13:28
↑ 67↓ 78
20K· 12.43 mi
7:51/mi
1:37:52
↑ 106↓ 860.1%
Half· 13.11 mi
7:46/mi
1:43:10
↑ 19↓ 370.5%
25K· 15.53 mi
7:51/mi
2:02:12
↑ 66↓ 880.2%
30K· 18.64 mi
7:46/mi
2:26:21
↑ 181↓ 1480.2%
20M
7:41/mi
2:36:47
↑ 64↓ 500.2%
21M
7:57/mi
2:44:44
↑ 106↓ 241.6%
35K· 21.75 mi
7:17/mi
2:50:11
↑ 17↓ 861.7%
23M
7:36/mi
2:59:42
↑ 23↓ 630.6%
24M
7:14/mi
3:06:56
↓ 821.3%
40K· 24.85 mi
7:26/mi
3:13:17
↓ 200.3%
25.2M
7:50/mi
3:15:59
↑ 13↓ 160.2%
Finish· 26.22 mi
7:03/mi
3:23:10
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:43:10
Pace7:52 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:40:00
Pace7:38 /mi
📊Negative Split: 3.1% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:5924:508:0024:50
8:00
-
10K
6.21 mi11:40:1649:077:5424:17
7:49
-0:11
15K
9.32 mi12:04:371:13:287:5324:21
7:50
+0:01
20K
12.43 mi12:29:011:37:527:5324:24
7:51
+0:01
Half
13.11 mi12:34:191:43:107:525:18
7:46
-0:05
25K
15.53 mi12:53:212:02:127:5219:02
7:51
+0:05
30K
18.64 mi13:17:302:26:217:5124:09
7:46
-0:05
20M
20.00 mi13:27:562:36:477:5010:26
7:41
-0:05
21M
21.00 mi13:35:532:44:447:517:57
7:57
+0:16
35K
21.75 mi13:41:202:50:117:505:27
7:17
-0:40
23M
23.00 mi13:50:512:59:427:499:31
7:36
+0:19
24M
24.00 mi13:58:053:06:567:477:14
7:14
-0:22
40K
24.85 mi14:04:263:13:177:476:21
7:26
+0:12
25.2M
25.20 mi14:07:083:15:597:472:42
7:50
+0:24
Finish
26.22 mi14:14:193:23:107:457:11
7:03
-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

7:03 /mi

Average Pace

7:45 /mi

Slowest Pace

8:00 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

46:10

23% of race

Time at Steady Pace

2:37:00

77% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:45 /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 mi11:15:5924:508:0024:50
8:00
#13971
10K
6.21 mi11:40:1649:077:5424:17
7:49
#13634
15K
9.32 mi12:04:371:13:287:5324:21
7:50
#13420
20K
12.43 mi12:29:011:37:527:5324:24
7:51
#13082
Half
13.11 mi12:34:191:43:107:525:18
7:46
#13035
25K
15.53 mi12:53:212:02:127:5219:02
7:51
#12749
30K
18.64 mi13:17:302:26:217:5124:09
7:46
#12040
20M
20.00 mi13:27:562:36:477:5010:26
7:41
#11706
21M
21.00 mi13:35:532:44:447:517:57
7:57
#11368
35K
21.75 mi13:41:202:50:117:505:27
7:17
#11191
23M
23.00 mi13:50:512:59:427:499:31
7:36
#10900
24M
24.00 mi13:58:053:06:567:477:14
7:14
#10661
40K
24.85 mi14:04:263:13:177:476:21
7:26
#10453
25.2M
25.20 mi14:07:083:15:597:472:42
7:50
#10348
Finish
26.22 mi14:14:193:23:107:457:11
7:03
#10092
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi139714009400913032(Top 49%)3491(Top 31%)3491(Top 71%)
10K6.21 mi3.10 mi13634+3373825+1843825+18413269(Top 50%)3587(Top 31%)3587(Top 73%)
15K9.32 mi3.11 mi13420+2143700+1253700+12513032(Top 49%)3491(Top 31%)3491(Top 71%)
20K12.43 mi3.11 mi13082+3383531+1693531+16912196(Top 46%)3078(Top 27%)3078(Top 63%)
Half13.11 mi0.68 mi13035+473506+253506+2512453(Top 47%)3156(Top 28%)3156(Top 65%)
25K15.53 mi2.42 mi12749+2863364+1423364+14211516(Top 43%)2771(Top 24%)2771(Top 57%)
30K18.64 mi3.11 mi12040+7092994+3702994+3709174(Top 34%)1794(Top 16%)1794(Top 37%)
20M20.00 mi1.36 mi11706+3342830+1642830+1648056(Top 30%)1431(Top 13%)1431(Top 29%)
21M21.00 mi1.00 mi11368+3382655+1752655+1757079(Top 27%)1174(Top 10%)1174(Top 24%)
35K21.75 mi0.75 mi11191+1772565+902565+907098(Top 27%)1151(Top 10%)1151(Top 24%)
23M23.00 mi1.25 mi10900+2912448+1172448+1177136(Top 27%)1233(Top 11%)1233(Top 25%)
24M24.00 mi1.00 mi10661+2392354+942354+945989(Top 22%)897(Top 8%)897(Top 18%)
40K24.85 mi0.85 mi10453+2082286+682286+686296(Top 24%)1092(Top 10%)1092(Top 22%)
25.2M25.20 mi0.35 mi10348+1052242+442242+445655(Top 21%)968(Top 8%)968(Top 20%)
Finish26.22 mi1.02 mi10092+2562144+982144+985561(Top 21%)940(Top 8%)940(Top 19%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 49%
×21story building
+97ft-345ft

Overall

13032

Females

3491

F18-39

3491

5K→10K

3.1 - 6.2 mi

Top 50%
×5story building
+79ft-138ft

Overall

13269

Females

3587

F18-39

3587

10K→15K

6.2 - 9.3 mi

Top 49%
×3story building
+67ft-78ft

Overall

13032

Females

3491

F18-39

3491

15K→20K

9.3 - 12.4 mi

Top 46%
×5story building
+106ft-86ft

Overall

12196

Females

3078

F18-39

3078

20K→Half

12.4 - 13.1 mi

Top 47%
×2story building
+19ft-37ft

Overall

12453

Females

3156

F18-39

3156

Half→25K

13.1 - 15.5 mi

Top 43%
×4story building
+66ft-88ft

Overall

11516

Females

2771

F18-39

2771

25K→30K

15.5 - 18.6 mi

Top 34%
×9story building
+181ft-148ft

Overall

9174

Females

1794

F18-39

1794

30K→20M

18.6 - 20.0 mi

Top 30%
×5story building
+64ft-50ft

Overall

8056

Females

1431

F18-39

1431

20M→21M

20.0 - 21.0 mi

Top 27%
×8story building
+106ft-24ft

Overall

7079

Females

1174

F18-39

1174

21M→35K

21.0 - 21.8 mi

Top 27%
×7story building
+17ft-86ft

Overall

7098

Females

1151

F18-39

1151

35K→23M

21.8 - 23.0 mi

Top 27%
×5story building
+23ft-63ft

Overall

7136

Females

1233

F18-39

1233

23M→24M

23.0 - 24.0 mi

Top 22%
×6story building
+12ft-82ft

Overall

5989

Females

897

F18-39

897

24M→40K

24.0 - 24.9 mi

Top 24%
×1story
+6ft-20ft

Overall

6296

Females

1092

F18-39

1092

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1story
+13ft-16ft

Overall

5655

Females

968

F18-39

968

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2story building
+22ft-21ft

Overall

5561

Females

940

F18-39

940

Passing Analysis

Category:
Athletes Passed
4252
Passed By
373
Net Change
+3879
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#13971
5K → 10K503166+337#13971#13634
10K → 15K318104+214#13634#13420
15K → 20K38446+338#13420#13082
20K → Half6114+47#13082#13035
Half → 25K30519+286#13035#12749
25K → 30K7123+709#12749#12040
30K → 20M3362+334#12040#11706
20M → 21M3380+338#11706#11368
21M → 35K1792+177#11368#11191
35K → 23M2954+291#11191#10900
23M → 24M2434+239#10900#10661
24M → 40K2124+208#10661#10453
40K → 25.2M1083+105#10453#10348
25.2M → Finish2582+256#10348#10092
TOTALS4252373+3879
📊

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