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BOSTON MARATHON 2023

Gail Cirlin-Lazerus

Bib: 15513•F

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Female)
#0 / 11423
Top 34%
Masters (Masters Women)
#0 / 6539
Top 20%
Division (F45-49)
#0 / 1817
Top 22%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
23:57
Rank: #11542
Start → 5K
23:57 | 7:43/mi
10K· 6.21 mi
48:10
Rank: #12296 (-754)
5K → 10K
24:13 | 7:48/mi
15K· 9.32 mi
1:12:26
Rank: #12428 (-132)
10K → 15K
24:16 | 7:49/mi
20K· 12.43 mi
1:37:13
Rank: #12606 (-178)
15K → 20K
24:47 | 7:59/mi
Half· 13.11 mi
1:42:32
Rank: #12589 (+17)
20K → Half
5:19 | 7:48/mi
25K· 15.53 mi
2:02:23
Rank: #12857 (-268)
Half → 25K
19:51 | 8:11/mi
30K· 18.64 mi
2:28:13
Rank: #12912 (-55)
25K → 30K
25:50 | 8:19/mi
20M
2:39:37
Rank: #12888 (+24)
30K → 20M
11:24 | 8:23/mi
21M
2:48:44
Rank: #12940 (-52)
20M → 21M
9:07 | 9:07/mi
35K· 21.75 mi
2:55:31
Rank: #13178 (-238)
21M → 35K
6:47 | 9:04/mi
23M
3:06:43
Rank: #13341 (-163)
35K → 23M
11:12 | 8:57/mi
24M
3:15:21
Rank: #13416 (-75)
23M → 24M
8:38 | 8:38/mi
40K· 24.85 mi
3:22:26
Rank: #13342 (+74)
24M → 40K
7:05 | 8:17/mi
25.2M
3:25:48
Rank: #13379 (-37)
40K → 25.2M
3:22 | 9:46/mi
Finish· 26.22 mi
3:33:55
Rank: #13315 (+64)
25.2M → Finish
8:07 | 7:58/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:42:32
Pace7:49 /mi
2nd Half
Distance13.11 mi
Time1:51:23
Pace8:30 /mi
📊Positive Split: 8.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:54:4023:577:4323:57
7:43
-
10K
6.21 mi11:18:5348:107:4524:13
7:48
+0:05
15K
9.32 mi11:43:091:12:267:4624:16
7:49
+0:01
20K
12.43 mi12:07:561:37:137:4924:47
7:59
+0:10
Half
13.11 mi12:13:151:42:327:495:19
7:48
-0:11
25K
15.53 mi12:33:062:02:237:5319:51
8:11
+0:23
30K
18.64 mi12:58:562:28:137:5725:50
8:19
+0:08
20M
20.00 mi13:10:202:39:377:5911:24
8:23
+0:04
21M
21.00 mi13:19:272:48:448:029:07
9:07
+0:44
35K
21.75 mi13:26:142:55:318:046:47
9:04
-0:03
23M
23.00 mi13:37:263:06:438:0711:12
8:57
-0:07
24M
24.00 mi13:46:043:15:218:088:38
8:38
-0:19
40K
24.85 mi13:53:093:22:268:097:05
8:17
-0:21
25.2M
25.20 mi13:56:313:25:488:103:22
9:46
+1:29
Finish
26.22 mi14:04:383:33:558:108:07
7:58
-1:48

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

7:43 /mi

Average Pace

8:10 /mi

Slowest Pace

9:46 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:39

52% of race

Time at Steady Pace

1:04:10

30% of race

Time at Slower Pace

39:06

18% of race

Average Pace: 8:10 /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 mi10:54:4023:577:4323:57
7:43
#11542
10K
6.21 mi11:18:5348:107:4524:13
7:48
#12296
15K
9.32 mi11:43:091:12:267:4624:16
7:49
#12428
20K
12.43 mi12:07:561:37:137:4924:47
7:59
#12606
Half
13.11 mi12:13:151:42:327:495:19
7:48
#12589
25K
15.53 mi12:33:062:02:237:5319:51
8:11
#12857
30K
18.64 mi12:58:562:28:137:5725:50
8:19
#12912
20M
20.00 mi13:10:202:39:377:5911:24
8:23
#12888
21M
21.00 mi13:19:272:48:448:029:07
9:07
#12940
35K
21.75 mi13:26:142:55:318:046:47
9:04
#13178
23M
23.00 mi13:37:263:06:438:0711:12
8:57
#13341
24M
24.00 mi13:46:043:15:218:088:38
8:38
#13416
40K
24.85 mi13:53:093:22:268:097:05
8:17
#13342
25.2M
25.20 mi13:56:313:25:488:103:22
9:46
#13379
Finish
26.22 mi14:04:383:33:558:108:07
7:58
#13315
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF45-49Seg. OverallSeg. FemalesSeg. F45-49
5K3.11 mi3.11 mi115422615261512840(Top 48%)3373(Top 30%)3373(Top 186%)
10K6.21 mi3.10 mi12296-7543036-4213036-42113086(Top 49%)3485(Top 31%)3485(Top 192%)
15K9.32 mi3.11 mi12428-1323135-993135-9912840(Top 48%)3373(Top 30%)3373(Top 186%)
20K12.43 mi3.11 mi12606-1783265-1303265-13013252(Top 50%)3684(Top 32%)3684(Top 203%)
Half13.11 mi0.68 mi12589+173258+73258+712753(Top 48%)3359(Top 29%)3359(Top 185%)
25K15.53 mi2.42 mi12857-2683434-1763434-17614148(Top 53%)4310(Top 38%)4310(Top 237%)
30K18.64 mi3.11 mi12912-553497-633497-6313117(Top 49%)3821(Top 33%)3821(Top 210%)
20M20.00 mi1.36 mi12888+243504-73504-712974(Top 49%)3843(Top 34%)3843(Top 212%)
21M21.00 mi1.00 mi12940-523553-493553-4914071(Top 53%)4518(Top 40%)4518(Top 249%)
35K21.75 mi0.75 mi13178-2383697-1443697-14418165(Top 68%)6917(Top 61%)6917(Top 381%)
23M23.00 mi1.25 mi13341-1633819-1223819-12215770(Top 59%)5608(Top 49%)5608(Top 309%)
24M24.00 mi1.00 mi13416-753884-653884-6515266(Top 57%)5378(Top 47%)5378(Top 296%)
40K24.85 mi0.85 mi13342+743865+193865+1911961(Top 45%)3651(Top 32%)3651(Top 201%)
25.2M25.20 mi0.35 mi13379-373898-333898-3316377(Top 62%)6071(Top 53%)6071(Top 334%)
Finish26.22 mi1.02 mi13315+643883+153883+1511906(Top 45%)3663(Top 32%)3663(Top 202%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 48%
×21stories
+97ft-345ft

Overall

12840

Females

3373

F45-49

3373

5K→10K

3.1 - 6.2 mi

Top 49%
×5stories
+79ft-138ft

Overall

13086

Females

3485

F45-49

3485

10K→15K

6.2 - 9.3 mi

Top 48%
×3stories
+67ft-78ft

Overall

12840

Females

3373

F45-49

3373

15K→20K

9.3 - 12.4 mi

Top 50%
×5stories
+106ft-86ft

Overall

13252

Females

3684

F45-49

3684

20K→Half

12.4 - 13.1 mi

Top 48%
×2stories
+19ft-37ft

Overall

12753

Females

3359

F45-49

3359

Half→25K

13.1 - 15.5 mi

Top 53%
×4stories
+66ft-88ft

Overall

14148

Females

4310

F45-49

4310

25K→30K

15.5 - 18.6 mi

Top 49%
×9stories
+181ft-148ft

Overall

13117

Females

3821

F45-49

3821

30K→20M

18.6 - 20.0 mi

Top 49%
×5stories
+64ft-50ft

Overall

12974

Females

3843

F45-49

3843

20M→21M

20.0 - 21.0 mi

Top 53%
×8stories
+106ft-24ft

Overall

14071

Females

4518

F45-49

4518

21M→35K

21.0 - 21.8 mi

Top 68%
×7stories
+17ft-86ft

Overall

18165

Females

6917

F45-49

6917

35K→23M

21.8 - 23.0 mi

Top 59%
×5stories
+23ft-63ft

Overall

15770

Females

5608

F45-49

5608

23M→24M

23.0 - 24.0 mi

Top 57%
×6stories
+12ft-82ft

Overall

15266

Females

5378

F45-49

5378

24M→40K

24.0 - 24.9 mi

Top 45%
×1story
+6ft-20ft

Overall

11961

Females

3651

F45-49

3651

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

16377

Females

6071

F45-49

6071

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2stories
+22ft-21ft

Overall

11906

Females

3663

F45-49

3663

Passing Analysis

Category:
Athletes Passed
1141
Passed By
2914
Net Change
-1773
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11542
5K → 10K84838-754#11542#12296
10K → 15K149281-132#12296#12428
15K → 20K115293-178#12428#12606
20K → Half3720+17#12606#12589
Half → 25K75343-268#12589#12857
25K → 30K163218-55#12857#12912
30K → 20M10682+24#12912#12888
20M → 21M82134-52#12888#12940
21M → 35K9247-238#12940#13178
35K → 23M53216-163#13178#13341
23M → 24M47122-75#13341#13416
24M → 40K9723+74#13416#13342
40K → 25.2M2461-37#13342#13379
25.2M → Finish10036+64#13379#13315
TOTALS11412914-1773
📊

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