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BOSTON MARATHON 2023

Lanqian Mary Liu

Bib: 10983•F

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0:00
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Overall
#0 / 26622
Top 22%
Gender (Female)
#0 / 11423
Top 5%
Division (F18-39)
#0 / 4884
Top 9%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:58
Rank: #8777
Start → 5K
22:58 | 7:24/mi
10K· 6.21 mi
44:10
Rank: #7165 (+1612)
5K → 10K
21:12 | 6:49/mi
15K· 9.32 mi
1:05:24
Rank: #6605 (+560)
10K → 15K
21:14 | 6:50/mi
20K· 12.43 mi
1:27:17
Rank: #6485 (+120)
15K → 20K
21:53 | 7:03/mi
Half· 13.11 mi
1:32:00
Rank: #6455 (+30)
20K → Half
4:43 | 6:55/mi
25K· 15.53 mi
1:49:12
Rank: #6391 (+64)
Half → 25K
17:12 | 7:06/mi
30K· 18.64 mi
2:11:54
Rank: #6269 (+122)
25K → 30K
22:42 | 7:18/mi
20M
2:21:38
Rank: #6129 (+140)
30K → 20M
9:44 | 7:10/mi
21M
2:29:12
Rank: #6033 (+96)
20M → 21M
7:34 | 7:34/mi
35K· 21.75 mi
2:34:46
Rank: #6063 (-30)
21M → 35K
5:34 | 7:26/mi
23M
2:44:06
Rank: #6021 (+42)
35K → 23M
9:20 | 7:27/mi
24M
2:51:20
Rank: #5959 (+62)
23M → 24M
7:14 | 7:14/mi
40K· 24.85 mi
2:57:25
Rank: #5864 (+95)
24M → 40K
6:05 | 7:07/mi
25.2M
3:00:02
Rank: #5822 (+42)
40K → 25.2M
2:37 | 7:35/mi
Finish· 26.22 mi
3:07:06
Rank: #5727 (+95)
25.2M → Finish
7:04 | 6:56/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:00
Pace7:01 /mi
2nd Half
Distance13.11 mi
Time1:35:06
Pace7:15 /mi
📊Positive Split: 3.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:14:2322:587:2422:58
7:24
-
10K
6.21 mi11:35:3544:107:0621:12
6:49
-0:35
15K
9.32 mi11:56:491:05:247:0121:14
6:50
+0:01
20K
12.43 mi12:18:421:27:177:0121:53
7:03
+0:13
Half
13.11 mi12:23:251:32:007:014:43
6:55
-0:08
25K
15.53 mi12:40:371:49:127:0217:12
7:06
+0:11
30K
18.64 mi13:03:192:11:547:0522:42
7:18
+0:12
20M
20.00 mi13:13:032:21:387:059:44
7:10
-0:08
21M
21.00 mi13:20:372:29:127:067:34
7:34
+0:24
35K
21.75 mi13:26:112:34:467:075:34
7:26
-0:08
23M
23.00 mi13:35:312:44:067:089:20
7:27
+0:01
24M
24.00 mi13:42:452:51:207:087:14
7:14
-0:13
40K
24.85 mi13:48:502:57:257:086:05
7:07
-0:07
25.2M
25.20 mi13:51:273:00:027:092:37
7:35
+0:28
Finish
26.22 mi13:58:313:07:067:087:04
6:56
-0:39

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

6:49 /mi

Average Pace

7:08 /mi

Slowest Pace

7:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:56:55

95% of race

Time at Steady Pace

10:11

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:08 /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 mi11:14:2322:587:2422:58
7:24
#8777
10K
6.21 mi11:35:3544:107:0621:12
6:49
#7165
15K
9.32 mi11:56:491:05:247:0121:14
6:50
#6605
20K
12.43 mi12:18:421:27:177:0121:53
7:03
#6485
Half
13.11 mi12:23:251:32:007:014:43
6:55
#6455
25K
15.53 mi12:40:371:49:127:0217:12
7:06
#6391
30K
18.64 mi13:03:192:11:547:0522:42
7:18
#6269
20M
20.00 mi13:13:032:21:387:059:44
7:10
#6129
21M
21.00 mi13:20:372:29:127:067:34
7:34
#6033
35K
21.75 mi13:26:112:34:467:075:34
7:26
#6063
23M
23.00 mi13:35:312:44:067:089:20
7:27
#6021
24M
24.00 mi13:42:452:51:207:087:14
7:14
#5959
40K
24.85 mi13:48:502:57:257:086:05
7:07
#5864
25.2M
25.20 mi13:51:273:00:027:092:37
7:35
#5822
Finish
26.22 mi13:58:313:07:067:087:04
6:56
#5727
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF18-39Seg. OverallSeg. FemalesSeg. F18-39
5K3.11 mi3.11 mi8777129812985447(Top 20%)423(Top 4%)423(Top 9%)
10K6.21 mi3.10 mi7165+1612776+522776+5225543(Top 21%)439(Top 4%)439(Top 9%)
15K9.32 mi3.11 mi6605+560642+134642+1345447(Top 20%)423(Top 4%)423(Top 9%)
20K12.43 mi3.11 mi6485+120626+16626+166254(Top 23%)587(Top 5%)587(Top 12%)
Half13.11 mi0.68 mi6455+30620+6620+66121(Top 23%)538(Top 5%)538(Top 11%)
25K15.53 mi2.42 mi6391+64611+9611+96091(Top 23%)574(Top 5%)574(Top 12%)
30K18.64 mi3.11 mi6269+122596+15596+156064(Top 23%)647(Top 6%)647(Top 13%)
20M20.00 mi1.36 mi6129+140574+22574+224944(Top 19%)448(Top 4%)448(Top 9%)
21M21.00 mi1.00 mi6033+96561+13561+134947(Top 19%)508(Top 4%)508(Top 10%)
35K21.75 mi0.75 mi6063-30575-14575-148108(Top 30%)1526(Top 13%)1526(Top 31%)
23M23.00 mi1.25 mi6021+42582-7582-76183(Top 23%)869(Top 8%)869(Top 18%)
24M24.00 mi1.00 mi5959+62577+5577+55965(Top 22%)873(Top 8%)873(Top 18%)
40K24.85 mi0.85 mi5864+95565+12565+124473(Top 17%)500(Top 4%)500(Top 10%)
25.2M25.20 mi0.35 mi5822+42559+6559+64391(Top 16%)546(Top 5%)546(Top 11%)
Finish26.22 mi1.02 mi5727+95553+6553+64858(Top 18%)684(Top 6%)684(Top 14%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21stories
+97ft-345ft

Overall

5447

Females

423

F18-39

423

5K→10K

3.1 - 6.2 mi

Top 21%
×5stories
+79ft-138ft

Overall

5543

Females

439

F18-39

439

10K→15K

6.2 - 9.3 mi

Top 20%
×3stories
+67ft-78ft

Overall

5447

Females

423

F18-39

423

15K→20K

9.3 - 12.4 mi

Top 23%
×5stories
+106ft-86ft

Overall

6254

Females

587

F18-39

587

20K→Half

12.4 - 13.1 mi

Top 23%
×2stories
+19ft-37ft

Overall

6121

Females

538

F18-39

538

Half→25K

13.1 - 15.5 mi

Top 23%
×4stories
+66ft-88ft

Overall

6091

Females

574

F18-39

574

25K→30K

15.5 - 18.6 mi

Top 23%
×9stories
+181ft-148ft

Overall

6064

Females

647

F18-39

647

30K→20M

18.6 - 20.0 mi

Top 19%
×5stories
+64ft-50ft

Overall

4944

Females

448

F18-39

448

20M→21M

20.0 - 21.0 mi

Top 19%
×8stories
+106ft-24ft

Overall

4947

Females

508

F18-39

508

21M→35K

21.0 - 21.8 mi

Top 30%
×7stories
+17ft-86ft

Overall

8108

Females

1526

F18-39

1526

35K→23M

21.8 - 23.0 mi

Top 23%
×5stories
+23ft-63ft

Overall

6183

Females

869

F18-39

869

23M→24M

23.0 - 24.0 mi

Top 22%
×6stories
+12ft-82ft

Overall

5965

Females

873

F18-39

873

24M→40K

24.0 - 24.9 mi

Top 17%
×1story
+6ft-20ft

Overall

4473

Females

500

F18-39

500

40K→25.2M

24.9 - 25.2 mi

Top 16%
×1story
+13ft-16ft

Overall

4391

Females

546

F18-39

546

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2stories
+22ft-21ft

Overall

4858

Females

684

F18-39

684

Passing Analysis

Category:
Athletes Passed
3377
Passed By
327
Net Change
+3050
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8777
5K → 10K16142+1612#8777#7165
10K → 15K5622+560#7165#6605
15K → 20K16848+120#6605#6485
20K → Half377+30#6485#6455
Half → 25K10238+64#6455#6391
25K → 30K17957+122#6391#6269
30K → 20M1477+140#6269#6129
20M → 21M10913+96#6129#6033
21M → 35K2757-30#6033#6063
35K → 23M8341+42#6063#6021
23M → 24M8624+62#6021#5959
24M → 40K1049+95#5959#5864
40K → 25.2M464+42#5864#5822
25.2M → Finish11318+95#5822#5727
TOTALS3377327+3050
📊

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