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BOSTON MARATHON 2023

Miah Chambers

Bib: 14070•F

CO

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 28%
Gender (Female)
#0 / 11423
Top 10%
Division (F18-39)
#0 / 4884
Top 18%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:03
Rank: #8991
Start → 5K
23:03 | 7:25/mi
10K· 6.21 mi
46:58
Rank: #10551 (-1560)
5K → 10K
23:55 | 7:42/mi
15K· 9.32 mi
1:09:53
Rank: #10022 (+529)
10K → 15K
22:55 | 7:23/mi
20K· 12.43 mi
1:32:52
Rank: #9595 (+427)
15K → 20K
22:59 | 7:24/mi
Half· 13.11 mi
1:37:52
Rank: #9552 (+43)
20K → Half
5:00 | 7:20/mi
25K· 15.53 mi
1:55:45
Rank: #9237 (+315)
Half → 25K
17:53 | 7:23/mi
30K· 18.64 mi
2:19:12
Rank: #8893 (+344)
25K → 30K
23:27 | 7:33/mi
20M
2:29:22
Rank: #8703 (+190)
30K → 20M
10:10 | 7:29/mi
21M
2:37:09
Rank: #8527 (+176)
20M → 21M
7:47 | 7:47/mi
35K· 21.75 mi
2:42:22
Rank: #8388 (+139)
21M → 35K
5:13 | 6:58/mi
23M
2:51:35
Rank: #8153 (+235)
35K → 23M
9:13 | 7:22/mi
24M
2:58:43
Rank: #7989 (+164)
23M → 24M
7:08 | 7:08/mi
40K· 24.85 mi
3:04:59
Rank: #7877 (+112)
24M → 40K
6:16 | 7:20/mi
25.2M
3:07:39
Rank: #7822 (+55)
40K → 25.2M
2:40 | 7:44/mi
Finish· 26.22 mi
3:14:19
Rank: #7534 (+288)
25.2M → Finish
6:40 | 6:33/mi

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:37:52
Pace7:28 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:36:27
Pace7:21 /mi
📊Negative Split: 1.4% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:13:2023:037:2523:03
7:25
-
10K
6.21 mi11:37:1546:587:3423:55
7:42
+0:17
15K
9.32 mi12:00:101:09:537:3022:55
7:23
-0:19
20K
12.43 mi12:23:091:32:527:2822:59
7:24
+0:01
Half
13.11 mi12:28:091:37:527:285:00
7:20
-0:04
25K
15.53 mi12:46:021:55:457:2717:53
7:23
+0:03
30K
18.64 mi13:09:292:19:127:2823:27
7:33
+0:10
20M
20.00 mi13:19:392:29:227:2810:10
7:29
-0:04
21M
21.00 mi13:27:262:37:097:297:47
7:47
+0:18
35K
21.75 mi13:32:392:42:227:285:13
6:58
-0:49
23M
23.00 mi13:41:522:51:357:289:13
7:22
+0:24
24M
24.00 mi13:49:002:58:437:277:08
7:08
-0:14
40K
24.85 mi13:55:163:04:597:276:16
7:20
+0:12
25.2M
25.20 mi13:57:563:07:397:272:40
7:44
+0:24
Finish
26.22 mi14:04:363:14:197:256:40
6:33
-1:11

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

6:33 /mi

Average Pace

7:25 /mi

Slowest Pace

7:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

19:01

10% of race

Time at Steady Pace

2:44:51

85% of race

Time at Slower Pace

10:27

5% of race

Average Pace: 7:25 /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 mi11:13:2023:037:2523:03
7:25
#8991
10K
6.21 mi11:37:1546:587:3423:55
7:42
#10551
15K
9.32 mi12:00:101:09:537:3022:55
7:23
#10022
20K
12.43 mi12:23:091:32:527:2822:59
7:24
#9595
Half
13.11 mi12:28:091:37:527:285:00
7:20
#9552
25K
15.53 mi12:46:021:55:457:2717:53
7:23
#9237
30K
18.64 mi13:09:292:19:127:2823:27
7:33
#8893
20M
20.00 mi13:19:392:29:227:2810:10
7:29
#8703
21M
21.00 mi13:27:262:37:097:297:47
7:47
#8527
35K
21.75 mi13:32:392:42:227:285:13
6:58
#8388
23M
23.00 mi13:41:522:51:357:289:13
7:22
#8153
24M
24.00 mi13:49:002:58:437:277:08
7:08
#7989
40K
24.85 mi13:55:163:04:597:276:16
7:20
#7877
25.2M
25.20 mi13:57:563:07:397:272:40
7:44
#7822
Finish
26.22 mi14:04:363:14:197:256:40
6:33
#7534
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8991139013909148(Top 34%)1500(Top 13%)1500(Top 31%)
10K6.21 mi3.10 mi10551-15602094-7042094-70412221(Top 46%)2990(Top 26%)2990(Top 61%)
15K9.32 mi3.11 mi10022+5291839+2551839+2559148(Top 34%)1500(Top 13%)1500(Top 31%)
20K12.43 mi3.11 mi9595+4271665+1741665+1748504(Top 32%)1296(Top 11%)1296(Top 27%)
Half13.11 mi0.68 mi9552+431646+191646+198855(Top 33%)1405(Top 12%)1405(Top 29%)
25K15.53 mi2.42 mi9237+3151540+1061540+1067829(Top 29%)1128(Top 10%)1128(Top 23%)
30K18.64 mi3.11 mi8893+3441442+981442+987571(Top 28%)1130(Top 10%)1130(Top 23%)
20M20.00 mi1.36 mi8703+1901392+501392+506698(Top 25%)924(Top 8%)924(Top 19%)
21M21.00 mi1.00 mi8527+1761349+431349+436111(Top 23%)838(Top 7%)838(Top 17%)
35K21.75 mi0.75 mi8388+1391306+431306+435246(Top 20%)567(Top 5%)567(Top 12%)
23M23.00 mi1.25 mi8153+2351243+631243+635673(Top 21%)711(Top 6%)711(Top 15%)
24M24.00 mi1.00 mi7989+1641202+411202+415414(Top 20%)694(Top 6%)694(Top 14%)
40K24.85 mi0.85 mi7877+1121178+241178+245675(Top 21%)865(Top 8%)865(Top 18%)
25.2M25.20 mi0.35 mi7822+551164+141164+145131(Top 19%)776(Top 7%)776(Top 16%)
Finish26.22 mi1.02 mi7534+2881090+741090+742717(Top 10%)238(Top 2%)238(Top 5%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 34%
×21stories
+97ft-345ft

Overall

9148

Females

1500

F18-39

1500

5K→10K

3.1 - 6.2 mi

Top 46%
×5stories
+79ft-138ft

Overall

12221

Females

2990

F18-39

2990

10K→15K

6.2 - 9.3 mi

Top 34%
×3stories
+67ft-78ft

Overall

9148

Females

1500

F18-39

1500

15K→20K

9.3 - 12.4 mi

Top 32%
×5stories
+106ft-86ft

Overall

8504

Females

1296

F18-39

1296

20K→Half

12.4 - 13.1 mi

Top 33%
×2stories
+19ft-37ft

Overall

8855

Females

1405

F18-39

1405

Half→25K

13.1 - 15.5 mi

Top 29%
×4stories
+66ft-88ft

Overall

7829

Females

1128

F18-39

1128

25K→30K

15.5 - 18.6 mi

Top 28%
×9stories
+181ft-148ft

Overall

7571

Females

1130

F18-39

1130

30K→20M

18.6 - 20.0 mi

Top 25%
×5stories
+64ft-50ft

Overall

6698

Females

924

F18-39

924

20M→21M

20.0 - 21.0 mi

Top 23%
×8stories
+106ft-24ft

Overall

6111

Females

838

F18-39

838

21M→35K

21.0 - 21.8 mi

Top 20%
×7stories
+17ft-86ft

Overall

5246

Females

567

F18-39

567

35K→23M

21.8 - 23.0 mi

Top 21%
×5stories
+23ft-63ft

Overall

5673

Females

711

F18-39

711

23M→24M

23.0 - 24.0 mi

Top 20%
×6stories
+12ft-82ft

Overall

5414

Females

694

F18-39

694

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5675

Females

865

F18-39

865

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5131

Females

776

F18-39

776

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2717

Females

238

F18-39

238

Passing Analysis

Category:
Athletes Passed
3168*
Passed By
1710
Net Change
+1457
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8991
5K → 10K191578-1560#8991#10551
10K → 15K55526+529#10551#10022
15K → 20K446*19+427#10022#9595
20K → Half5310+43#9595#9552
Half → 25K3238+315#9552#9237
25K → 30K37733+344#9237#8893
30K → 20M1955+190#8893#8703
20M → 21M1826+176#8703#8527
21M → 35K1401+139#8527#8388
35K → 23M2394+235#8388#8153
23M → 24M1706+164#8153#7989
24M → 40K1219+112#7989#7877
40K → 25.2M583+55#7877#7822
25.2M → Finish2902+288#7822#7534
TOTALS3168*1710+1457

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

📊

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