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BOSTON MARATHON 2023

Jennifer Bailey

NY

Bib: 29139 F

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

⏱️ Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
9:58/mi
30:59
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
9:14/mi
59:39
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
9:21/mi
1:28:41
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
9:28/mi
1:58:06
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
9:24/mi
2:04:31
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
9:38/mi
2:27:52
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
10:05/mi
2:59:11
↑ 181↓ 1480.2%
138 ft elev
20M
10:18/mi
3:13:11
↑ 64↓ 500.2%
148 ft elev
21M
11:04/mi
3:24:15
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
10:18/mi
3:31:57
↑ 17↓ 861.7%
156 ft elev
23M
10:49/mi
3:45:30
↑ 23↓ 630.6%
116 ft elev
24M
10:50/mi
3:56:20
↓ 821.3%
34 ft elev
40K· 24.85 mi
10:53/mi
4:05:38
↓ 200.3%
20 ft elev
25.2M
11:24/mi
4:09:34
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
10:01/mi
4:19:46
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:04:31
Pace9:30 /mi
2nd Half
Distance13.11 mi
Time2:15:15
Pace10:19 /mi
📊Positive Split: 8.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:0130:599:5830:59
9:58
-
10K
6.21 mi12:17:4159:399:3628:40
9:14
-0:44
15K
9.32 mi12:46:431:28:419:3129:02
9:21
+0:07
20K
12.43 mi13:16:081:58:069:3029:25
9:28
+0:07
Half
13.11 mi13:22:332:04:319:306:25
9:24
-0:04
25K
15.53 mi13:45:542:27:529:3123:21
9:38
+0:14
30K
18.64 mi14:17:132:59:119:3731:19
10:05
+0:27
20M
20.00 mi14:31:133:13:119:4014:00
10:18
+0:13
21M
21.00 mi14:42:173:24:159:4411:04
11:04
+0:46
35K
21.75 mi14:49:593:31:579:457:42
10:18
-0:46
23M
23.00 mi15:03:323:45:309:4813:33
10:49
+0:31
24M
24.00 mi15:14:223:56:209:5110:50
10:50
+0:01
40K
24.85 mi15:23:404:05:389:539:18
10:53
+0:03
25.2M
25.20 mi15:27:364:09:349:543:56
11:24
+0:31
Finish
26.22 mi15:37:484:19:469:5510:12
10:01
-1:23

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

9:14 /mi

Average Pace

9:55 /mi

Slowest Pace

11:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:53

45% of race

Time at Steady Pace

1:34:12

36% of race

Time at Slower Pace

48:41

19% of race

Average Pace: 9:54 /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 mi11:49:0130:599:5830:59
9:58
#23374
10K
6.21 mi12:17:4159:399:3628:40
9:14
#22604
15K
9.32 mi12:46:431:28:419:3129:02
9:21
#22362
20K
12.43 mi13:16:081:58:069:3029:25
9:28
#22114
Half
13.11 mi13:22:332:04:319:306:25
9:24
#22100
25K
15.53 mi13:45:542:27:529:3123:21
9:38
#21949
30K
18.64 mi14:17:132:59:119:3731:19
10:05
#21791
20M
20.00 mi14:31:133:13:119:4014:00
10:18
#21762
21M
21.00 mi14:42:173:24:159:4411:04
11:04
#21731
35K
21.75 mi14:49:593:31:579:457:42
10:18
#21741
23M
23.00 mi15:03:323:45:309:4813:33
10:49
#21762
24M
24.00 mi15:14:223:56:209:5110:50
10:50
#21814
40K
24.85 mi15:23:404:05:389:539:18
10:53
#21828
25.2M
25.20 mi15:27:364:09:349:543:56
11:24
#21810
Finish
26.22 mi15:37:484:19:469:5510:12
10:01
#21815
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi233749588958821796(Top 82%)8670(Top 76%)8670(Top 178%)
10K6.21 mi3.10 mi22604+7709152+4369152+43621708(Top 82%)8661(Top 76%)8661(Top 177%)
15K9.32 mi3.11 mi22362+2429026+1269026+12621796(Top 82%)8670(Top 76%)8670(Top 178%)
20K12.43 mi3.11 mi22114+2488890+1368890+13621468(Top 81%)8510(Top 74%)8510(Top 174%)
Half13.11 mi0.68 mi22100+148886+48886+421849(Top 82%)8710(Top 76%)8710(Top 178%)
25K15.53 mi2.42 mi21949+1518798+888798+8821238(Top 80%)8406(Top 74%)8406(Top 172%)
30K18.64 mi3.11 mi21791+1588716+828716+8221244(Top 80%)8489(Top 74%)8489(Top 174%)
20M20.00 mi1.36 mi21762+298712+48712+421282(Top 80%)8571(Top 75%)8571(Top 175%)
21M21.00 mi1.00 mi21731+318706+68706+620976(Top 79%)8449(Top 74%)8449(Top 173%)
35K21.75 mi0.75 mi21741-108718-128718-1221979(Top 83%)9037(Top 79%)9037(Top 185%)
23M23.00 mi1.25 mi21762-218747-298747-2922013(Top 83%)9079(Top 79%)9079(Top 186%)
24M24.00 mi1.00 mi21814-528780-338780-3322727(Top 85%)9485(Top 83%)9485(Top 194%)
40K24.85 mi0.85 mi21828-148805-258805-2522108(Top 83%)9196(Top 81%)9196(Top 188%)
25.2M25.20 mi0.35 mi21810+188795+108795+1021385(Top 80%)8804(Top 77%)8804(Top 180%)
Finish26.22 mi1.02 mi21815-58804-98804-921793(Top 82%)9006(Top 79%)9006(Top 184%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21story building
+97ft-345ft

Overall

21796

Females

8670

F18-39

8670

5K→10K

3.1 - 6.2 mi

Top 82%
×5story building
+79ft-138ft

Overall

21708

Females

8661

F18-39

8661

10K→15K

6.2 - 9.3 mi

Top 82%
×3story building
+67ft-78ft

Overall

21796

Females

8670

F18-39

8670

15K→20K

9.3 - 12.4 mi

Top 81%
×5story building
+106ft-86ft

Overall

21468

Females

8510

F18-39

8510

20K→Half

12.4 - 13.1 mi

Top 82%
×2story building
+19ft-37ft

Overall

21849

Females

8710

F18-39

8710

Half→25K

13.1 - 15.5 mi

Top 80%
×4story building
+66ft-88ft

Overall

21238

Females

8406

F18-39

8406

25K→30K

15.5 - 18.6 mi

Top 80%
×9story building
+181ft-148ft

Overall

21244

Females

8489

F18-39

8489

30K→20M

18.6 - 20.0 mi

Top 80%
×5story building
+64ft-50ft

Overall

21282

Females

8571

F18-39

8571

20M→21M

20.0 - 21.0 mi

Top 79%
×8story building
+106ft-24ft

Overall

20976

Females

8449

F18-39

8449

21M→35K

21.0 - 21.8 mi

Top 83%
×7story building
+17ft-86ft

Overall

21979

Females

9037

F18-39

9037

35K→23M

21.8 - 23.0 mi

Top 83%
×5story building
+23ft-63ft

Overall

22013

Females

9079

F18-39

9079

23M→24M

23.0 - 24.0 mi

Top 85%
×6story building
+12ft-82ft

Overall

22727

Females

9485

F18-39

9485

24M→40K

24.0 - 24.9 mi

Top 83%
×1story
+6ft-20ft

Overall

22108

Females

9196

F18-39

9196

40K→25.2M

24.9 - 25.2 mi

Top 80%
×1story
+13ft-16ft

Overall

21385

Females

8804

F18-39

8804

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2story building
+22ft-21ft

Overall

21793

Females

9006

F18-39

9006

Passing Analysis

Category:
Athletes Passed
2146
Passed By
587
Net Change
+1559
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23374
5K → 10K79525+770#23374#22604
10K → 15K29149+242#22604#22362
15K → 20K28032+248#22362#22114
20K → Half3420+14#22114#22100
Half → 25K17625+151#22100#21949
25K → 30K22668+158#21949#21791
30K → 20M7950+29#21791#21762
20M → 21M6837+31#21762#21731
21M → 35K2838-10#21731#21741
35K → 23M5778-21#21741#21762
23M → 24M1870-52#21762#21814
24M → 40K3852-14#21814#21828
40K → 25.2M257+18#21828#21810
25.2M → Finish3136-5#21810#21815
TOTALS2146587+1559
📊

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