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BOSTON MARATHON 2023

Jennifer Lambert

Bib: 19382•F

UT

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Masters (Masters Women)
#0 / 6539
Division (F40-44)
#0 / 1878
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
8:35/mi
26:39
↑ 97↓ 3451.5%
10K· 6.21 mi
8:32/mi
53:10
↑ 79↓ 1380.4%
15K· 9.32 mi
8:20/mi
1:19:04
↑ 67↓ 78
20K· 12.43 mi
9:09/mi
1:47:31
↑ 106↓ 860.1%
Half· 13.11 mi
8:43/mi
1:53:28
↑ 19↓ 370.5%
25K· 15.53 mi
8:43/mi
2:14:35
↑ 66↓ 880.2%
30K· 18.64 mi
10:59/mi
2:48:41
↑ 181↓ 1480.2%
20M
8:59/mi
3:00:54
↑ 64↓ 500.2%
21M
9:29/mi
3:10:23
↑ 106↓ 241.6%
35K· 21.75 mi
8:51/mi
3:17:00
↑ 17↓ 861.7%
23M
10:01/mi
3:29:33
↑ 23↓ 630.6%
24M
8:44/mi
3:38:17
↓ 821.3%
40K· 24.85 mi
8:59/mi
3:45:58
↓ 200.3%
25.2M
9:34/mi
3:49:16
↑ 13↓ 160.2%
Finish· 26.22 mi
8:31/mi
3:57:57
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:28
Pace8:39 /mi
2nd Half
Distance13.11 mi
Time2:04:29
Pace9:30 /mi
📊Positive Split: 9.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:23:2526:398:3526:39
8:35
-
10K
6.21 mi11:49:5653:108:3326:31
8:32
-0:03
15K
9.32 mi12:15:501:19:048:2925:54
8:20
-0:12
20K
12.43 mi12:44:171:47:318:3928:27
9:09
+0:49
Half
13.11 mi12:50:141:53:288:395:57
8:43
-0:26
25K
15.53 mi13:11:212:14:358:4021:07
8:43
0:00
30K
18.64 mi13:45:272:48:419:0334:06
10:59
+2:16
20M
20.00 mi13:57:403:00:549:0312:13
8:59
-2:00
21M
21.00 mi14:07:093:10:239:049:29
9:29
+0:30
35K
21.75 mi14:13:463:17:009:036:37
8:51
-0:38
23M
23.00 mi14:26:193:29:339:0712:33
10:01
+1:10
24M
24.00 mi14:35:033:38:179:068:44
8:44
-1:17
40K
24.85 mi14:42:443:45:589:057:41
8:59
+0:15
25.2M
25.20 mi14:46:023:49:169:063:18
9:34
+0:35
Finish
26.22 mi14:54:433:57:579:058:41
8:31
-1:03

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

8:20 /mi

Average Pace

9:05 /mi

Slowest Pace

10:59 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

25:54

11% of race

Time at Steady Pace

2:32:37

64% of race

Time at Slower Pace

59:26

25% of race

Average Pace: 9:05 /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 mi11:23:2526:398:3526:39
8:35
#18108
10K
6.21 mi11:49:5653:108:3326:31
8:32
#18237
15K
9.32 mi12:15:501:19:048:2925:54
8:20
#17741
20K
12.43 mi12:44:171:47:318:3928:27
9:09
#18517
Half
13.11 mi12:50:141:53:288:395:57
8:43
#18557
25K
15.53 mi13:11:212:14:358:4021:07
8:43
#18365
30K
18.64 mi13:45:272:48:419:0334:06
10:59
#19816
20M
20.00 mi13:57:403:00:549:0312:13
8:59
#19584
21M
21.00 mi14:07:093:10:239:049:29
9:29
#19351
35K
21.75 mi14:13:463:17:009:036:37
8:51
#19283
23M
23.00 mi14:26:193:29:339:0712:33
10:01
#19351
24M
24.00 mi14:35:033:38:179:068:44
8:44
#19215
40K
24.85 mi14:42:443:45:589:057:41
8:59
#19098
25.2M
25.20 mi14:46:023:49:169:063:18
9:34
#19053
Finish
26.22 mi14:54:433:57:579:058:41
8:31
#18938
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF40-44Seg. OverallSeg. FemalesSeg. F40-44
5K3.11 mi3.11 mi181086628662816781(Top 63%)5782(Top 51%)5782(Top 308%)
10K6.21 mi3.10 mi18237-1296661-336661-3318473(Top 69%)6753(Top 59%)6753(Top 360%)
15K9.32 mi3.11 mi17741+4966367+2946367+29416781(Top 63%)5782(Top 51%)5782(Top 308%)
20K12.43 mi3.11 mi18517-7766813-4466813-44620394(Top 77%)7897(Top 69%)7897(Top 421%)
Half13.11 mi0.68 mi18557-406839-266839-2619107(Top 72%)7149(Top 63%)7149(Top 381%)
25K15.53 mi2.42 mi18365+1926747+926747+9217444(Top 66%)6255(Top 55%)6255(Top 333%)
30K18.64 mi3.11 mi19816-14517622-8757622-87523052(Top 87%)9480(Top 83%)9480(Top 505%)
20M20.00 mi1.36 mi19584+2327494+1287494+12816524(Top 62%)5889(Top 52%)5889(Top 314%)
21M21.00 mi1.00 mi19351+2337372+1227372+12215923(Top 60%)5594(Top 49%)5594(Top 298%)
35K21.75 mi0.75 mi19283+687337+357337+3517224(Top 65%)6409(Top 56%)6409(Top 341%)
23M23.00 mi1.25 mi19351-687381-447381-4420063(Top 75%)7990(Top 70%)7990(Top 425%)
24M24.00 mi1.00 mi19215+1367313+687313+6815891(Top 60%)5756(Top 50%)5756(Top 306%)
40K24.85 mi0.85 mi19098+1177257+567257+5616103(Top 60%)5923(Top 52%)5923(Top 315%)
25.2M25.20 mi0.35 mi19053+457235+227235+2215611(Top 59%)5672(Top 50%)5672(Top 302%)
Finish26.22 mi1.02 mi18938+1157177+587177+5815587(Top 59%)5592(Top 49%)5592(Top 298%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 63%
×21story building
+97ft-345ft

Overall

16781

Females

5782

F40-44

5782

5K→10K

3.1 - 6.2 mi

Top 69%
×5story building
+79ft-138ft

Overall

18473

Females

6753

F40-44

6753

10K→15K

6.2 - 9.3 mi

Top 63%
×3story building
+67ft-78ft

Overall

16781

Females

5782

F40-44

5782

15K→20K

9.3 - 12.4 mi

Top 77%
×5story building
+106ft-86ft

Overall

20394

Females

7897

F40-44

7897

20K→Half

12.4 - 13.1 mi

Top 72%
×2story building
+19ft-37ft

Overall

19107

Females

7149

F40-44

7149

Half→25K

13.1 - 15.5 mi

Top 66%
×4story building
+66ft-88ft

Overall

17444

Females

6255

F40-44

6255

25K→30K

15.5 - 18.6 mi

Top 87%
×9story building
+181ft-148ft

Overall

23052

Females

9480

F40-44

9480

30K→20M

18.6 - 20.0 mi

Top 62%
×5story building
+64ft-50ft

Overall

16524

Females

5889

F40-44

5889

20M→21M

20.0 - 21.0 mi

Top 60%
×8story building
+106ft-24ft

Overall

15923

Females

5594

F40-44

5594

21M→35K

21.0 - 21.8 mi

Top 65%
×7story building
+17ft-86ft

Overall

17224

Females

6409

F40-44

6409

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

20063

Females

7990

F40-44

7990

23M→24M

23.0 - 24.0 mi

Top 60%
×6story building
+12ft-82ft

Overall

15891

Females

5756

F40-44

5756

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

16103

Females

5923

F40-44

5923

40K→25.2M

24.9 - 25.2 mi

Top 59%
×1story
+13ft-16ft

Overall

15611

Females

5672

F40-44

5672

25.2M→Finish

25.2 - 26.2 mi

Top 59%
×2story building
+22ft-21ft

Overall

15587

Females

5592

F40-44

5592

Passing Analysis

Category:
Athletes Passed
2126
Passed By
2956
Net Change
-830
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18108
5K → 10K244373-129#18108#18237
10K → 15K53842+496#18237#17741
15K → 20K35811-776#17741#18517
20K → Half2060-40#18517#18557
Half → 25K23442+192#18557#18365
25K → 30K121463-1451#18365#19816
30K → 20M2364+232#19816#19584
20M → 21M2374+233#19584#19351
21M → 35K779+68#19351#19283
35K → 23M51119-68#19283#19351
23M → 24M1437+136#19351#19215
24M → 40K12811+117#19215#19098
40K → 25.2M494+45#19098#19053
25.2M → Finish1227+115#19053#18938
TOTALS21262956-830
📊

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