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BOSTON MARATHON 2023

Constance Bailey

Bib: 12818•F

TN

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 44%
Gender (Female)
#0 / 11423
Top 26%
Division (F18-39)
#0 / 4884
Top 44%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:05
Rank: #9080
Start → 5K
23:05 | 7:26/mi
10K· 6.21 mi
46:12
Rank: #9467 (-387)
5K → 10K
23:07 | 7:26/mi
15K· 9.32 mi
1:09:01
Rank: #9226 (+241)
10K → 15K
22:49 | 7:21/mi
20K· 12.43 mi
1:32:19
Rank: #9227 (-1)
15K → 20K
23:18 | 7:30/mi
Half· 13.11 mi
1:37:22
Rank: #9227
20K → Half
5:03 | 7:24/mi
25K· 15.53 mi
1:55:45
Rank: #9242 (-15)
Half → 25K
18:23 | 7:35/mi
30K· 18.64 mi
2:20:57
Rank: #9677 (-435)
25K → 30K
25:12 | 8:07/mi
20M
2:33:21
Rank: #10301 (-624)
30K → 20M
12:24 | 9:07/mi
21M
2:43:02
Rank: #10724 (-423)
20M → 21M
9:41 | 9:41/mi
35K· 21.75 mi
2:49:15
Rank: #10838 (-114)
21M → 35K
6:13 | 8:19/mi
23M
3:00:13
Rank: #11092 (-254)
35K → 23M
10:58 | 8:46/mi
24M
3:08:41
Rank: #11264 (-172)
23M → 24M
8:28 | 8:28/mi
40K· 24.85 mi
3:16:25
Rank: #11512 (-248)
24M → 40K
7:44 | 9:03/mi
25.2M
3:19:45
Rank: #11587 (-75)
40K → 25.2M
3:20 | 9:40/mi
Finish· 26.22 mi
3:28:35
Rank: #11812 (-225)
25.2M → Finish
8:50 | 8:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:22
Pace7:26 /mi
2nd Half
Distance13.11 mi
Time1:51:13
Pace8:29 /mi
📊Positive Split: 14.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:3023:057:2623:05
7:26
-
10K
6.21 mi11:13:3746:127:2623:07
7:26
0:00
15K
9.32 mi11:36:261:09:017:2422:49
7:21
-0:05
20K
12.43 mi11:59:441:32:197:2623:18
7:30
+0:09
Half
13.11 mi12:04:471:37:227:265:03
7:24
-0:06
25K
15.53 mi12:23:101:55:457:2718:23
7:35
+0:11
30K
18.64 mi12:48:222:20:577:3425:12
8:07
+0:32
20M
20.00 mi13:00:462:33:217:4012:24
9:07
+1:00
21M
21.00 mi13:10:272:43:027:469:41
9:41
+0:34
35K
21.75 mi13:16:402:49:157:476:13
8:19
-1:22
23M
23.00 mi13:27:383:00:137:5010:58
8:46
+0:27
24M
24.00 mi13:36:063:08:417:528:28
8:28
-0:18
40K
24.85 mi13:43:503:16:257:547:44
9:03
+0:35
25.2M
25.20 mi13:47:103:19:457:563:20
9:40
+0:37
Finish
26.22 mi13:56:003:28:357:588:50
8:40
-1:00

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

7:58 /mi

Slowest Pace

9:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:55:45

55% of race

Time at Steady Pace

48:43

23% of race

Time at Slower Pace

44:07

21% of race

Average Pace: 7:57 /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 mi10:50:3023:057:2623:05
7:26
#9080
10K
6.21 mi11:13:3746:127:2623:07
7:26
#9467
15K
9.32 mi11:36:261:09:017:2422:49
7:21
#9226
20K
12.43 mi11:59:441:32:197:2623:18
7:30
#9227
Half
13.11 mi12:04:471:37:227:265:03
7:24
#9227
25K
15.53 mi12:23:101:55:457:2718:23
7:35
#9242
30K
18.64 mi12:48:222:20:577:3425:12
8:07
#9677
20M
20.00 mi13:00:462:33:217:4012:24
9:07
#10301
21M
21.00 mi13:10:272:43:027:469:41
9:41
#10724
35K
21.75 mi13:16:402:49:157:476:13
8:19
#10838
23M
23.00 mi13:27:383:00:137:5010:58
8:46
#11092
24M
24.00 mi13:36:063:08:417:528:28
8:28
#11264
40K
24.85 mi13:43:503:16:257:547:44
9:03
#11512
25.2M
25.20 mi13:47:103:19:457:563:20
9:40
#11587
Finish
26.22 mi13:56:003:28:357:588:50
8:40
#11812
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi9080142714278909(Top 33%)1418(Top 12%)1418(Top 29%)
10K6.21 mi3.10 mi9467-3871599-1721599-17210001(Top 38%)1822(Top 16%)1822(Top 37%)
15K9.32 mi3.11 mi9226+2411512+871512+878909(Top 33%)1418(Top 12%)1418(Top 29%)
20K12.43 mi3.11 mi9227-11529-171529-179324(Top 35%)1616(Top 14%)1616(Top 33%)
Half13.11 mi0.68 mi92271533-41533-49516(Top 36%)1696(Top 15%)1696(Top 35%)
25K15.53 mi2.42 mi9242-151545-121545-129435(Top 35%)1755(Top 15%)1755(Top 36%)
30K18.64 mi3.11 mi9677-4351754-2091754-20911731(Top 44%)3032(Top 27%)3032(Top 62%)
20M20.00 mi1.36 mi10301-6242071-3172071-31717192(Top 65%)6273(Top 55%)6273(Top 128%)
21M21.00 mi1.00 mi10724-4232313-2422313-24216771(Top 63%)6047(Top 53%)6047(Top 124%)
35K21.75 mi0.75 mi10838-1142394-812394-8114151(Top 53%)4631(Top 41%)4631(Top 95%)
23M23.00 mi1.25 mi11092-2542540-1462540-14614757(Top 55%)5033(Top 44%)5033(Top 103%)
24M24.00 mi1.00 mi11264-1722659-1192659-11914283(Top 54%)4824(Top 42%)4824(Top 99%)
40K24.85 mi0.85 mi11512-2482822-1632822-16316387(Top 62%)6060(Top 53%)6060(Top 124%)
25.2M25.20 mi0.35 mi11587-752869-472869-4715956(Top 60%)5820(Top 51%)5820(Top 119%)
Finish26.22 mi1.02 mi11812-2253018-1493018-14916334(Top 61%)6003(Top 53%)6003(Top 123%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 33%
×21stories
+97ft-345ft

Overall

8909

Females

1418

F18-39

1418

5K→10K

3.1 - 6.2 mi

Top 38%
×5stories
+79ft-138ft

Overall

10001

Females

1822

F18-39

1822

10K→15K

6.2 - 9.3 mi

Top 33%
×3stories
+67ft-78ft

Overall

8909

Females

1418

F18-39

1418

15K→20K

9.3 - 12.4 mi

Top 35%
×5stories
+106ft-86ft

Overall

9324

Females

1616

F18-39

1616

20K→Half

12.4 - 13.1 mi

Top 36%
×2stories
+19ft-37ft

Overall

9516

Females

1696

F18-39

1696

Half→25K

13.1 - 15.5 mi

Top 35%
×4stories
+66ft-88ft

Overall

9435

Females

1755

F18-39

1755

25K→30K

15.5 - 18.6 mi

Top 44%
×9stories
+181ft-148ft

Overall

11731

Females

3032

F18-39

3032

30K→20M

18.6 - 20.0 mi

Top 65%
×5stories
+64ft-50ft

Overall

17192

Females

6273

F18-39

6273

20M→21M

20.0 - 21.0 mi

Top 63%
×8stories
+106ft-24ft

Overall

16771

Females

6047

F18-39

6047

21M→35K

21.0 - 21.8 mi

Top 53%
×7stories
+17ft-86ft

Overall

14151

Females

4631

F18-39

4631

35K→23M

21.8 - 23.0 mi

Top 55%
×5stories
+23ft-63ft

Overall

14757

Females

5033

F18-39

5033

23M→24M

23.0 - 24.0 mi

Top 54%
×6stories
+12ft-82ft

Overall

14283

Females

4824

F18-39

4824

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

16387

Females

6060

F18-39

6060

40K→25.2M

24.9 - 25.2 mi

Top 60%
×1story
+13ft-16ft

Overall

15956

Females

5820

F18-39

5820

25.2M→Finish

25.2 - 26.2 mi

Top 61%
×2stories
+22ft-21ft

Overall

16334

Females

6003

F18-39

6003

Passing Analysis

Category:
Athletes Passed
955
Passed By
3686
Net Change
-2732
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9080
5K → 10K138525-387#9080#9467
10K → 15K29958+241#9467#9226
15K → 20K138139-1#9226#9227
20K → Half26260#9227#9227
Half → 25K108123-15#9227#9242
25K → 30K70505-435#9242#9677
30K → 20M12635-624#9677#10301
20M → 21M17440-423#10301#10724
21M → 35K24138-114#10724#10838
35K → 23M35289-254#10838#11092
23M → 24M27199-172#11092#11264
24M → 40K19267-248#11264#11512
40K → 25.2M1590-75#11512#11587
25.2M → Finish27252-225#11587#11812
TOTALS9553686-2732
📊

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