Lifen Lu

Bib: 21479F

MI

0:00
0:00
/ mi
Masters
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Overall
#0 / 25550
Gender (Female)
#0 / 10924
Top 46%
Masters (Masters Women)
#0 / 6263
Top 36%
Division (F55-59)
#0 / 876
Top 17%
Race Day Weather
55°/45°F
scattered clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:48
Rank: #18463
Start5K
8:38/mi
26:48 split
10K· 6.21 mi
54:15
Rank: #18760 (-297)
5K10K
8:50/mi
27:27 split
15K· 9.32 mi
1:21:22
Rank: #18331 (+429)
10K15K
8:44/mi
27:07 split
20K· 12.43 mi
1:48:47
Rank: #17789 (+542)
15K20K
8:49/mi
27:25 split
Half· 13.11 mi
1:54:31
Rank: #17654 (+135)
20KHalf
8:24/mi
5:44 split
25K· 15.53 mi
2:15:47
Rank: #17059 (+595)
Half25K
8:46/mi
21:16 split
30K· 18.64 mi
2:43:52
Rank: #16356 (+703)
25K30K
9:02/mi
28:05 split
20M
2:55:44
Rank: #15959 (+397)
30K20M
8:44/mi
11:52 split
21M
3:05:12
Rank: #15652 (+307)
20M21M
9:28/mi
9:28 split
35K· 21.75 mi
3:11:30
Rank: #15452 (+200)
21M35K
8:25/mi
6:18 split
23M
3:22:24
Rank: #15094 (+358)
35K23M
8:42/mi
10:54 split
24M
3:31:05
Rank: #14859 (+235)
23M24M
8:41/mi
8:41 split
40K· 24.85 mi
3:38:35
Rank: #14614 (+245)
24M40K
8:46/mi
7:30 split
25.2M
3:41:53
Rank: #14501 (+113)
40K25.2M
9:34/mi
3:18 split
Finish· 26.22 mi
3:50:26
Rank: #14355 (+146)
25.2MFinish
8:23/mi
8:33 split

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:54:31
Pace8:44 /mi
2nd Half
Distance13.11 mi
Time1:55:55
Pace8:51 /mi
📊Positive Split: 1.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:24:2926:488:3826:48
8:38
-
10K
6.21 mi11:51:5654:158:4427:27
8:50
+0:12
15K
9.32 mi12:19:031:21:228:4427:07
8:44
-0:06
20K
12.43 mi12:46:281:48:478:4527:25
8:49
+0:05
Half
13.11 mi12:52:121:54:318:445:44
8:24
-0:25
25K
15.53 mi13:13:282:15:478:4421:16
8:46
+0:22
30K
18.64 mi13:41:332:43:528:4728:05
9:02
+0:16
20M
20.00 mi13:53:252:55:448:4711:52
8:44
-0:18
21M
21.00 mi14:02:533:05:128:499:28
9:28
+0:44
35K
21.75 mi14:09:113:11:308:486:18
8:25
-1:03
23M
23.00 mi14:20:053:22:248:4810:54
8:42
+0:17
24M
24.00 mi14:28:463:31:058:488:41
8:41
-0:01
40K
24.85 mi14:36:163:38:358:487:30
8:46
+0:05
25.2M
25.20 mi14:39:343:41:538:483:18
9:34
+0:48
Finish
26.22 mi14:48:073:50:268:488:33
8:23
-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

8:23 /mi

Average Pace

8:48 /mi

Slowest Pace

9:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:37:40

94% of race

Time at Steady Pace

12:46

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 8:47 /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 mi11:24:2926:488:3826:48
8:38
#18463
10K
6.21 mi11:51:5654:158:4427:27
8:50
#18760
15K
9.32 mi12:19:031:21:228:4427:07
8:44
#18331
20K
12.43 mi12:46:281:48:478:4527:25
8:49
#17789
Half
13.11 mi12:52:121:54:318:445:44
8:24
#17654
25K
15.53 mi13:13:282:15:478:4421:16
8:46
#17059
30K
18.64 mi13:41:332:43:528:4728:05
9:02
#16356
20M
20.00 mi13:53:252:55:448:4711:52
8:44
#15959
21M
21.00 mi14:02:533:05:128:499:28
9:28
#15652
35K
21.75 mi14:09:113:11:308:486:18
8:25
#15452
23M
23.00 mi14:20:053:22:248:4810:54
8:42
#15094
24M
24.00 mi14:28:463:31:058:488:41
8:41
#14859
40K
24.85 mi14:36:163:38:358:487:30
8:46
#14614
25.2M
25.20 mi14:39:343:41:538:483:18
9:34
#14501
Finish
26.22 mi14:48:073:50:268:488:33
8:23
#14355
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF55-59Seg. OverallSeg. FemalesSeg. F55-59
5K3.11 mi3.11 mi184637032703217637(Top 69%)6504(Top 60%)6504(Top 742%)
10K6.21 mi3.10 mi18760-2977191-1597191-15919026(Top 74%)7303(Top 67%)7303(Top 834%)
15K9.32 mi3.11 mi18331+4296928+2636928+26317637(Top 69%)6504(Top 60%)6504(Top 742%)
20K12.43 mi3.11 mi17789+5426625+3036625+30316522(Top 65%)5905(Top 54%)5905(Top 674%)
Half13.11 mi0.68 mi17654+1356551+746551+7415212(Top 60%)5161(Top 47%)5161(Top 589%)
25K15.53 mi2.42 mi17059+5956234+3176234+31714438(Top 57%)4859(Top 44%)4859(Top 555%)
30K18.64 mi3.11 mi16356+7035887+3475887+34713428(Top 53%)4526(Top 41%)4526(Top 517%)
20M20.00 mi1.36 mi15959+3975686+2015686+20110758(Top 42%)3357(Top 31%)3357(Top 383%)
21M21.00 mi1.00 mi15652+3075553+1335553+13310731(Top 42%)3604(Top 33%)3604(Top 411%)
35K21.75 mi0.75 mi15452+2005461+925461+9210337(Top 40%)3421(Top 31%)3421(Top 391%)
23M23.00 mi1.25 mi15094+3585297+1645297+1649623(Top 38%)3207(Top 29%)3207(Top 366%)
24M24.00 mi1.00 mi14859+2355216+815216+8110534(Top 41%)3710(Top 34%)3710(Top 424%)
40K24.85 mi0.85 mi14614+2455117+995117+999789(Top 38%)3483(Top 32%)3483(Top 398%)
25.2M25.20 mi0.35 mi14501+1135071+465071+469109(Top 36%)3227(Top 30%)3227(Top 368%)
Finish26.22 mi1.02 mi14355+1465008+635008+6310943(Top 43%)3964(Top 36%)3964(Top 453%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 69%
×21story building
+97ft-345ft

Overall

17637

Females

6504

F55-59

6504

5K→10K

3.1 - 6.2 mi

Top 74%
×5story building
+79ft-138ft

Overall

19026

Females

7303

F55-59

7303

10K→15K

6.2 - 9.3 mi

Top 69%
×3story building
+67ft-78ft

Overall

17637

Females

6504

F55-59

6504

15K→20K

9.3 - 12.4 mi

Top 65%
×5story building
+106ft-86ft

Overall

16522

Females

5905

F55-59

5905

20K→Half

12.4 - 13.1 mi

Top 60%
×2story building
+19ft-37ft

Overall

15212

Females

5161

F55-59

5161

Half→25K

13.1 - 15.5 mi

Top 57%
×4story building
+66ft-88ft

Overall

14438

Females

4859

F55-59

4859

25K→30K

15.5 - 18.6 mi

Top 53%
×9story building
+181ft-148ft

Overall

13428

Females

4526

F55-59

4526

30K→20M

18.6 - 20.0 mi

Top 42%
×5story building
+64ft-50ft

Overall

10758

Females

3357

F55-59

3357

20M→21M

20.0 - 21.0 mi

Top 42%
×8story building
+106ft-24ft

Overall

10731

Females

3604

F55-59

3604

21M→35K

21.0 - 21.8 mi

Top 40%
×7story building
+17ft-86ft

Overall

10337

Females

3421

F55-59

3421

35K→23M

21.8 - 23.0 mi

Top 38%
×5story building
+23ft-63ft

Overall

9623

Females

3207

F55-59

3207

23M→24M

23.0 - 24.0 mi

Top 41%
×6story building
+12ft-82ft

Overall

10534

Females

3710

F55-59

3710

24M→40K

24.0 - 24.9 mi

Top 38%
×1story
+6ft-20ft

Overall

9789

Females

3483

F55-59

3483

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

9109

Females

3227

F55-59

3227

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2story building
+22ft-21ft

Overall

10943

Females

3964

F55-59

3964

Passing Analysis

Category:
Athletes Passed
4721
Passed By
613
Net Change
+4108
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18463
5K10K184481-297#18463#18760
10K15K47243+429#18760#18331
15K20K57230+542#18331#17789
20KHalf1372+135#17789#17654
Half25K6016+595#17654#17059
25K30K71512+703#17059#16356
30K20M3992+397#16356#15959
20M21M3158+307#15959#15652
21M35K2011+200#15652#15452
35K23M3580+358#15452#15094
23M24M24611+235#15094#14859
24M40K2516+245#14859#14614
40K25.2M1152+113#14614#14501
25.2MFinish1559+146#14501#14355
TOTALS4721613+4108
📊

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