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BOSTON MARATHON 2023

Leila Chambers

Bib: 26420•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

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
9:03/mi
28:08
↑ 97↓ 3451.5%
10K· 6.21 mi
9:06/mi
56:24
↑ 79↓ 1380.4%
15K· 9.32 mi
9:05/mi
1:24:37
↑ 67↓ 78
20K· 12.43 mi
9:07/mi
1:52:55
↑ 106↓ 860.1%
Half· 13.11 mi
8:56/mi
1:59:01
↑ 19↓ 370.5%
25K· 15.53 mi
9:32/mi
2:22:09
↑ 66↓ 880.2%
30K· 18.64 mi
9:47/mi
2:52:34
↑ 181↓ 1480.2%
20M
10:14/mi
3:06:29
↑ 64↓ 500.2%
21M
11:24/mi
3:17:53
↑ 106↓ 241.6%
35K· 21.75 mi
10:00/mi
3:25:22
↑ 17↓ 861.7%
23M
10:20/mi
3:38:18
↑ 23↓ 630.6%
24M
10:22/mi
3:48:40
↓ 821.3%
40K· 24.85 mi
10:48/mi
3:57:54
↓ 200.3%
25.2M
11:27/mi
4:01:51
↑ 13↓ 160.2%
Finish· 26.22 mi
10:15/mi
4:12:18
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:59:01
Pace9:05 /mi
2nd Half
Distance13.11 mi
Time2:13:17
Pace10:10 /mi
📊Positive Split: 12.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:1528:089:0328:08
9:03
-
10K
6.21 mi12:11:3156:249:0528:16
9:06
+0:03
15K
9.32 mi12:39:441:24:379:0528:13
9:05
-0:01
20K
12.43 mi13:08:021:52:559:0528:18
9:07
+0:02
Half
13.11 mi13:14:081:59:019:056:06
8:56
-0:11
25K
15.53 mi13:37:162:22:099:0923:08
9:32
+0:36
30K
18.64 mi14:07:412:52:349:1530:25
9:47
+0:15
20M
20.00 mi14:21:363:06:299:1913:55
10:14
+0:27
21M
21.00 mi14:33:003:17:539:2511:24
11:24
+1:10
35K
21.75 mi14:40:293:25:229:277:29
10:00
-1:24
23M
23.00 mi14:53:253:38:189:2912:56
10:20
+0:20
24M
24.00 mi15:03:473:48:409:3210:22
10:22
+0:02
40K
24.85 mi15:13:013:57:549:349:14
10:48
+0:26
25.2M
25.20 mi15:16:584:01:519:363:57
11:27
+0:39
Finish
26.22 mi15:27:254:12:189:3810:27
10:15
-1:12

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

8:56 /mi

Average Pace

9:38 /mi

Slowest Pace

11:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:22:09

56% of race

Time at Steady Pace

1:25:34

34% of race

Time at Slower Pace

24:35

10% of race

Average Pace: 9:37 /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 mi11:43:1528:089:0328:08
9:03
#20687
10K
6.21 mi12:11:3156:249:0528:16
9:06
#20971
15K
9.32 mi12:39:441:24:379:0528:13
9:05
#20936
20K
12.43 mi13:08:021:52:559:0528:18
9:07
#20715
Half
13.11 mi13:14:081:59:019:056:06
8:56
#20683
25K
15.53 mi13:37:162:22:099:0923:08
9:32
#20767
30K
18.64 mi14:07:412:52:349:1530:25
9:47
#20660
20M
20.00 mi14:21:363:06:299:1913:55
10:14
#20682
21M
21.00 mi14:33:003:17:539:2511:24
11:24
#20769
35K
21.75 mi14:40:293:25:229:277:29
10:00
#20779
23M
23.00 mi14:53:253:38:189:2912:56
10:20
#20777
24M
24.00 mi15:03:473:48:409:3210:22
10:22
#20810
40K
24.85 mi15:13:013:57:549:349:14
10:48
#20854
25.2M
25.20 mi15:16:584:01:519:363:57
11:27
#20864
Finish
26.22 mi15:27:254:12:189:3810:27
10:15
#20920
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi206878216821620880(Top 78%)8174(Top 72%)8174(Top 167%)
10K6.21 mi3.10 mi20971-2848309-938309-9321264(Top 80%)8423(Top 74%)8423(Top 172%)
15K9.32 mi3.11 mi20936+358252+578252+5720880(Top 78%)8174(Top 72%)8174(Top 167%)
20K12.43 mi3.11 mi20715+2218114+1388114+13820190(Top 76%)7775(Top 68%)7775(Top 159%)
Half13.11 mi0.68 mi20683+328095+198095+1920251(Top 76%)7822(Top 68%)7822(Top 160%)
25K15.53 mi2.42 mi20767-848134-398134-3920978(Top 79%)8256(Top 72%)8256(Top 169%)
30K18.64 mi3.11 mi20660+1078088+468088+4620428(Top 77%)8011(Top 70%)8011(Top 164%)
20M20.00 mi1.36 mi20682-228119-318119-3121126(Top 79%)8484(Top 74%)8484(Top 174%)
21M21.00 mi1.00 mi20769-878171-528171-5221694(Top 81%)8825(Top 77%)8825(Top 181%)
35K21.75 mi0.75 mi20779-108194-238194-2321286(Top 80%)8643(Top 76%)8643(Top 177%)
23M23.00 mi1.25 mi20777+28206-128206-1220909(Top 79%)8469(Top 74%)8469(Top 173%)
24M24.00 mi1.00 mi20810-338236-308236-3021710(Top 82%)8951(Top 78%)8951(Top 183%)
40K24.85 mi0.85 mi20854-448271-358271-3521945(Top 82%)9122(Top 80%)9122(Top 187%)
25.2M25.20 mi0.35 mi20864-108284-138284-1321483(Top 81%)8849(Top 77%)8849(Top 181%)
Finish26.22 mi1.02 mi20920-568328-448328-4422433(Top 84%)9347(Top 82%)9347(Top 191%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 78%
×21story building
+97ft-345ft

Overall

20880

Females

8174

F18-39

8174

5K→10K

3.1 - 6.2 mi

Top 80%
×5story building
+79ft-138ft

Overall

21264

Females

8423

F18-39

8423

10K→15K

6.2 - 9.3 mi

Top 78%
×3story building
+67ft-78ft

Overall

20880

Females

8174

F18-39

8174

15K→20K

9.3 - 12.4 mi

Top 76%
×5story building
+106ft-86ft

Overall

20190

Females

7775

F18-39

7775

20K→Half

12.4 - 13.1 mi

Top 76%
×2story building
+19ft-37ft

Overall

20251

Females

7822

F18-39

7822

Half→25K

13.1 - 15.5 mi

Top 79%
×4story building
+66ft-88ft

Overall

20978

Females

8256

F18-39

8256

25K→30K

15.5 - 18.6 mi

Top 77%
×9story building
+181ft-148ft

Overall

20428

Females

8011

F18-39

8011

30K→20M

18.6 - 20.0 mi

Top 79%
×5story building
+64ft-50ft

Overall

21126

Females

8484

F18-39

8484

20M→21M

20.0 - 21.0 mi

Top 81%
×8story building
+106ft-24ft

Overall

21694

Females

8825

F18-39

8825

21M→35K

21.0 - 21.8 mi

Top 80%
×7story building
+17ft-86ft

Overall

21286

Females

8643

F18-39

8643

35K→23M

21.8 - 23.0 mi

Top 79%
×5story building
+23ft-63ft

Overall

20909

Females

8469

F18-39

8469

23M→24M

23.0 - 24.0 mi

Top 82%
×6story building
+12ft-82ft

Overall

21710

Females

8951

F18-39

8951

24M→40K

24.0 - 24.9 mi

Top 82%
×1story
+6ft-20ft

Overall

21945

Females

9122

F18-39

9122

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

21483

Females

8849

F18-39

8849

25.2M→Finish

25.2 - 26.2 mi

Top 84%
×2story building
+22ft-21ft

Overall

22433

Females

9347

F18-39

9347

Passing Analysis

Category:
Athletes Passed
1279
Passed By
1512
Net Change
-233
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20687
5K → 10K178462-284#20687#20971
10K → 15K192157+35#20971#20936
15K → 20K28160+221#20936#20715
20K → Half4816+32#20715#20683
Half → 25K78162-84#20683#20767
25K → 30K19588+107#20767#20660
30K → 20M6486-22#20660#20682
20M → 21M37124-87#20682#20769
21M → 35K3848-10#20769#20779
35K → 23M6765+2#20779#20777
23M → 24M3366-33#20777#20810
24M → 40K2468-44#20810#20854
40K → 25.2M1424-10#20854#20864
25.2M → Finish3086-56#20864#20920
TOTALS12791512-233
📊

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