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BOSTON MARATHON 2023

Alexandra Bailey

Bib: 27129•F

MA

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

Start
0:00:00
Race begins
5K· 3.11 mi
30:29
Rank: #22951
Start → 5K
30:29 | 9:49/mi
10K· 6.21 mi
1:00:01
Rank: #22773 (+178)
5K → 10K
29:32 | 9:30/mi
15K· 9.32 mi
1:29:05
Rank: #22483 (+290)
10K → 15K
29:04 | 9:21/mi
20K· 12.43 mi
1:58:24
Rank: #22202 (+281)
15K → 20K
29:19 | 9:26/mi
Half· 13.11 mi
2:04:55
Rank: #22199 (+3)
20K → Half
6:31 | 9:33/mi
25K· 15.53 mi
2:28:38
Rank: #22084 (+115)
Half → 25K
23:43 | 9:47/mi
30K· 18.64 mi
3:00:29
Rank: #22004 (+80)
25K → 30K
31:51 | 10:15/mi
20M
3:13:48
Rank: #21848 (+156)
30K → 20M
13:19 | 9:48/mi
21M
3:24:01
Rank: #21704 (+144)
20M → 21M
10:13 | 10:13/mi
35K· 21.75 mi
3:31:27
Rank: #21683 (+21)
21M → 35K
7:26 | 9:56/mi
23M
3:44:18
Rank: #21609 (+74)
35K → 23M
12:51 | 10:16/mi
24M
3:54:27
Rank: #21584 (+25)
23M → 24M
10:09 | 10:09/mi
40K· 24.85 mi
4:03:07
Rank: #21543 (+41)
24M → 40K
8:40 | 10:08/mi
25.2M
4:06:47
Rank: #21509 (+34)
40K → 25.2M
3:40 | 10:38/mi
Finish· 26.22 mi
4:16:05
Rank: #21399 (+110)
25.2M → Finish
9:18 | 9:08/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:04:55
Pace9:32 /mi
2nd Half
Distance13.11 mi
Time2:11:10
Pace10:00 /mi
📊Positive Split: 5.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:5930:299:4930:29
9:49
-
10K
6.21 mi12:17:311:00:019:4029:32
9:30
-0:19
15K
9.32 mi12:46:351:29:059:3329:04
9:21
-0:09
20K
12.43 mi13:15:541:58:249:3229:19
9:26
+0:05
Half
13.11 mi13:22:252:04:559:326:31
9:33
+0:07
25K
15.53 mi13:46:082:28:389:3423:43
9:47
+0:14
30K
18.64 mi14:17:593:00:299:4131:51
10:15
+0:28
20M
20.00 mi14:31:183:13:489:4113:19
9:48
-0:27
21M
21.00 mi14:41:313:24:019:4310:13
10:13
+0:25
35K
21.75 mi14:48:573:31:279:437:26
9:56
-0:17
23M
23.00 mi15:01:483:44:189:4512:51
10:16
+0:20
24M
24.00 mi15:11:573:54:279:4610:09
10:09
-0:07
40K
24.85 mi15:20:374:03:079:478:40
10:08
-0:01
25.2M
25.20 mi15:24:174:06:479:483:40
10:38
+0:30
Finish
26.22 mi15:33:354:16:059:469:18
9:08
-1:30

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

9:08 /mi

Average Pace

9:46 /mi

Slowest Pace

10:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:58:41

70% of race

Time at Steady Pace

1:17:24

30% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 9:46 /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 mi11:47:5930:299:4930:29
9:49
#22951
10K
6.21 mi12:17:311:00:019:4029:32
9:30
#22773
15K
9.32 mi12:46:351:29:059:3329:04
9:21
#22483
20K
12.43 mi13:15:541:58:249:3229:19
9:26
#22202
Half
13.11 mi13:22:252:04:559:326:31
9:33
#22199
25K
15.53 mi13:46:082:28:389:3423:43
9:47
#22084
30K
18.64 mi14:17:593:00:299:4131:51
10:15
#22004
20M
20.00 mi14:31:183:13:489:4113:19
9:48
#21848
21M
21.00 mi14:41:313:24:019:4310:13
10:13
#21704
35K
21.75 mi14:48:573:31:279:437:26
9:56
#21683
23M
23.00 mi15:01:483:44:189:4512:51
10:16
#21609
24M
24.00 mi15:11:573:54:279:4610:09
10:09
#21584
40K
24.85 mi15:20:374:03:079:478:40
10:08
#21543
25.2M
25.20 mi15:24:174:06:479:483:40
10:38
#21509
Finish
26.22 mi15:33:354:16:059:469:18
9:08
#21399
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi229519361936121829(Top 82%)8691(Top 76%)8691(Top 178%)
10K6.21 mi3.10 mi22773+1789239+1229239+12222538(Top 85%)9106(Top 80%)9106(Top 186%)
15K9.32 mi3.11 mi22483+2909082+1579082+15721829(Top 82%)8691(Top 76%)8691(Top 178%)
20K12.43 mi3.11 mi22202+2818937+1458937+14521351(Top 80%)8436(Top 74%)8436(Top 173%)
Half13.11 mi0.68 mi22199+38937893722272(Top 84%)8926(Top 78%)8926(Top 183%)
25K15.53 mi2.42 mi22084+1158870+678870+6721689(Top 81%)8664(Top 76%)8664(Top 177%)
30K18.64 mi3.11 mi22004+808837+338837+3321658(Top 81%)8713(Top 76%)8713(Top 178%)
20M20.00 mi1.36 mi21848+1568759+788759+7819868(Top 75%)7787(Top 68%)7787(Top 159%)
21M21.00 mi1.00 mi21704+1448687+728687+7218797(Top 71%)7229(Top 63%)7229(Top 148%)
35K21.75 mi0.75 mi21683+218688-18688-121126(Top 79%)8555(Top 75%)8555(Top 175%)
23M23.00 mi1.25 mi21609+748663+258663+2520758(Top 78%)8380(Top 73%)8380(Top 172%)
24M24.00 mi1.00 mi21584+258662+18662+121206(Top 80%)8673(Top 76%)8673(Top 178%)
40K24.85 mi0.85 mi21543+418652+108652+1020348(Top 76%)8253(Top 72%)8253(Top 169%)
25.2M25.20 mi0.35 mi21509+348633+198633+1919565(Top 73%)7830(Top 69%)7830(Top 160%)
Finish26.22 mi1.02 mi21399+1108588+458588+4518610(Top 70%)7240(Top 63%)7240(Top 148%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21stories
+97ft-345ft

Overall

21829

Females

8691

F18-39

8691

5K→10K

3.1 - 6.2 mi

Top 85%
×5stories
+79ft-138ft

Overall

22538

Females

9106

F18-39

9106

10K→15K

6.2 - 9.3 mi

Top 82%
×3stories
+67ft-78ft

Overall

21829

Females

8691

F18-39

8691

15K→20K

9.3 - 12.4 mi

Top 80%
×5stories
+106ft-86ft

Overall

21351

Females

8436

F18-39

8436

20K→Half

12.4 - 13.1 mi

Top 84%
×2stories
+19ft-37ft

Overall

22272

Females

8926

F18-39

8926

Half→25K

13.1 - 15.5 mi

Top 81%
×4stories
+66ft-88ft

Overall

21689

Females

8664

F18-39

8664

25K→30K

15.5 - 18.6 mi

Top 81%
×9stories
+181ft-148ft

Overall

21658

Females

8713

F18-39

8713

30K→20M

18.6 - 20.0 mi

Top 75%
×5stories
+64ft-50ft

Overall

19868

Females

7787

F18-39

7787

20M→21M

20.0 - 21.0 mi

Top 71%
×8stories
+106ft-24ft

Overall

18797

Females

7229

F18-39

7229

21M→35K

21.0 - 21.8 mi

Top 79%
×7stories
+17ft-86ft

Overall

21126

Females

8555

F18-39

8555

35K→23M

21.8 - 23.0 mi

Top 78%
×5stories
+23ft-63ft

Overall

20758

Females

8380

F18-39

8380

23M→24M

23.0 - 24.0 mi

Top 80%
×6stories
+12ft-82ft

Overall

21206

Females

8673

F18-39

8673

24M→40K

24.0 - 24.9 mi

Top 76%
×1story
+6ft-20ft

Overall

20348

Females

8253

F18-39

8253

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

19565

Females

7830

F18-39

7830

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2stories
+22ft-21ft

Overall

18610

Females

7240

F18-39

7240

Passing Analysis

Category:
Athletes Passed
2066
Passed By
514
Net Change
+1552
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22951
5K → 10K331153+178#22951#22773
10K → 15K33444+290#22773#22483
15K → 20K31029+281#22483#22202
20K → Half2421+3#22202#22199
Half → 25K16045+115#22199#22084
25K → 30K17696+80#22084#22004
30K → 20M16913+156#22004#21848
20M → 21M1484+144#21848#21704
21M → 35K4322+21#21704#21683
35K → 23M10026+74#21683#21609
23M → 24M5328+25#21609#21584
24M → 40K6221+41#21584#21543
40K → 25.2M384+34#21543#21509
25.2M → Finish1188+110#21509#21399
TOTALS2066514+1552
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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