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BOSTON MARATHON 2023

Lieting Yu

Bib: 13551•M

NJ

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 29%
Gender (Male)
#0 / 15176
Top 44%
Masters (Masters Men)
#0 / 9891
Top 31%
Division (M50-54)
#0 / 2052
Top 26%
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
7:23/mi
22:57
↑ 97↓ 3451.5%
10K· 6.21 mi
7:16/mi
45:32
↑ 79↓ 1380.4%
15K· 9.32 mi
7:14/mi
1:07:59
↑ 67↓ 78
20K· 12.43 mi
7:17/mi
1:30:36
↑ 106↓ 860.1%
Half· 13.11 mi
7:15/mi
1:35:33
↑ 19↓ 370.5%
25K· 15.53 mi
7:20/mi
1:53:19
↑ 66↓ 880.2%
30K· 18.64 mi
7:29/mi
2:16:34
↑ 181↓ 1480.2%
20M
7:36/mi
2:26:54
↑ 64↓ 500.2%
21M
8:06/mi
2:35:00
↑ 106↓ 241.6%
35K· 21.75 mi
7:28/mi
2:40:35
↑ 17↓ 861.7%
23M
7:58/mi
2:50:34
↑ 23↓ 630.6%
24M
7:25/mi
2:57:59
↓ 821.3%
40K· 24.85 mi
7:34/mi
3:04:27
↓ 200.3%
25.2M
8:27/mi
3:07:22
↑ 13↓ 160.2%
Finish· 26.22 mi
7:40/mi
3:15:11
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:35:33
Pace7:17 /mi
2nd Half
Distance13.11 mi
Time1:39:38
Pace7:36 /mi
📊Positive Split: 4.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:2522:577:2322:57
7:23
-
10K
6.21 mi11:14:0045:327:2022:35
7:16
-0:07
15K
9.32 mi11:36:271:07:597:1822:27
7:14
-0:02
20K
12.43 mi11:59:041:30:367:1722:37
7:17
+0:03
Half
13.11 mi12:04:011:35:337:174:57
7:15
-0:02
25K
15.53 mi12:21:471:53:197:1817:46
7:20
+0:05
30K
18.64 mi12:45:022:16:347:2023:15
7:29
+0:09
20M
20.00 mi12:55:222:26:547:2110:20
7:36
+0:07
21M
21.00 mi13:03:282:35:007:238:06
8:06
+0:30
35K
21.75 mi13:09:032:40:357:235:35
7:28
-0:38
23M
23.00 mi13:19:022:50:347:259:59
7:58
+0:30
24M
24.00 mi13:26:272:57:597:257:25
7:25
-0:33
40K
24.85 mi13:32:553:04:277:256:28
7:34
+0:09
25.2M
25.20 mi13:35:503:07:227:262:55
8:27
+0:53
Finish
26.22 mi13:43:393:15:117:277:49
7:40
-0:47

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

7:14 /mi

Average Pace

7:27 /mi

Slowest Pace

8:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:54:11

89% of race

Time at Steady Pace

21:00

11% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:27 /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 mi10:51:2522:577:2322:57
7:23
#8714
10K
6.21 mi11:14:0045:327:2022:35
7:16
#8633
15K
9.32 mi11:36:271:07:597:1822:27
7:14
#8418
20K
12.43 mi11:59:041:30:367:1722:37
7:17
#8178
Half
13.11 mi12:04:011:35:337:174:57
7:15
#8178
25K
15.53 mi12:21:471:53:197:1817:46
7:20
#8028
30K
18.64 mi12:45:022:16:347:2023:15
7:29
#7826
20M
20.00 mi12:55:222:26:547:2110:20
7:36
#7762
21M
21.00 mi13:03:282:35:007:238:06
8:06
#7724
35K
21.75 mi13:09:032:40:357:235:35
7:28
#7728
23M
23.00 mi13:19:022:50:347:259:59
7:58
#7815
24M
24.00 mi13:26:272:57:597:257:25
7:25
#7752
40K
24.85 mi13:32:553:04:277:256:28
7:34
#7715
25.2M
25.20 mi13:35:503:07:227:262:55
8:27
#7727
Finish
26.22 mi13:43:393:15:117:277:49
7:40
#7783
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi8714742374237964(Top 30%)6898(Top 45%)6898(Top 336%)
10K6.21 mi3.10 mi8633+817354+697354+698614(Top 32%)7333(Top 48%)7333(Top 357%)
15K9.32 mi3.11 mi8418+2157224+1307224+1307964(Top 30%)6898(Top 45%)6898(Top 336%)
20K12.43 mi3.11 mi8178+2407057+1677057+1677623(Top 29%)6642(Top 44%)6642(Top 324%)
Half13.11 mi0.68 mi81787054+37054+38213(Top 31%)7027(Top 46%)7027(Top 342%)
25K15.53 mi2.42 mi8028+1506935+1196935+1197454(Top 28%)6456(Top 43%)6456(Top 315%)
30K18.64 mi3.11 mi7826+2026764+1716764+1717105(Top 27%)6140(Top 40%)6140(Top 299%)
20M20.00 mi1.36 mi7762+646709+556709+557509(Top 28%)6285(Top 41%)6285(Top 306%)
21M21.00 mi1.00 mi7724+386664+456664+457984(Top 30%)6461(Top 43%)6461(Top 315%)
35K21.75 mi0.75 mi7728-46658+66658+68217(Top 31%)6618(Top 44%)6618(Top 323%)
23M23.00 mi1.25 mi7815-876685-276685-279539(Top 36%)7243(Top 48%)7243(Top 353%)
24M24.00 mi1.00 mi7752+636624+616624+617155(Top 27%)5805(Top 38%)5805(Top 283%)
40K24.85 mi0.85 mi7715+376590+346590+347088(Top 27%)5681(Top 37%)5681(Top 277%)
25.2M25.20 mi0.35 mi7727-126586+46586+49165(Top 34%)6825(Top 45%)6825(Top 333%)
Finish26.22 mi1.02 mi7783-566603-176603-179745(Top 37%)7137(Top 47%)7137(Top 348%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21story building
+97ft-345ft

Overall

7964

Males

6898

M50-54

6898

5K→10K

3.1 - 6.2 mi

Top 32%
×5story building
+79ft-138ft

Overall

8614

Males

7333

M50-54

7333

10K→15K

6.2 - 9.3 mi

Top 30%
×3story building
+67ft-78ft

Overall

7964

Males

6898

M50-54

6898

15K→20K

9.3 - 12.4 mi

Top 29%
×5story building
+106ft-86ft

Overall

7623

Males

6642

M50-54

6642

20K→Half

12.4 - 13.1 mi

Top 31%
×2story building
+19ft-37ft

Overall

8213

Males

7027

M50-54

7027

Half→25K

13.1 - 15.5 mi

Top 28%
×4story building
+66ft-88ft

Overall

7454

Males

6456

M50-54

6456

25K→30K

15.5 - 18.6 mi

Top 27%
×9story building
+181ft-148ft

Overall

7105

Males

6140

M50-54

6140

30K→20M

18.6 - 20.0 mi

Top 28%
×5story building
+64ft-50ft

Overall

7509

Males

6285

M50-54

6285

20M→21M

20.0 - 21.0 mi

Top 30%
×8story building
+106ft-24ft

Overall

7984

Males

6461

M50-54

6461

21M→35K

21.0 - 21.8 mi

Top 31%
×7story building
+17ft-86ft

Overall

8217

Males

6618

M50-54

6618

35K→23M

21.8 - 23.0 mi

Top 36%
×5story building
+23ft-63ft

Overall

9539

Males

7243

M50-54

7243

23M→24M

23.0 - 24.0 mi

Top 27%
×6story building
+12ft-82ft

Overall

7155

Males

5805

M50-54

5805

24M→40K

24.0 - 24.9 mi

Top 27%
×1story
+6ft-20ft

Overall

7088

Males

5681

M50-54

5681

40K→25.2M

24.9 - 25.2 mi

Top 34%
×1story
+13ft-16ft

Overall

9165

Males

6825

M50-54

6825

25.2M→Finish

25.2 - 26.2 mi

Top 37%
×2story building
+22ft-21ft

Overall

9745

Males

7137

M50-54

7137

Passing Analysis

Category:
Athletes Passed
1788
Passed By
857
Net Change
+931
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8714
5K → 10K293212+81#8714#8633
10K → 15K26449+215#8633#8418
15K → 20K26828+240#8418#8178
20K → Half22220#8178#8178
Half → 25K18030+150#8178#8028
25K → 30K24745+202#8028#7826
30K → 20M9632+64#7826#7762
20M → 21M8648+38#7762#7724
21M → 35K3842-4#7724#7728
35K → 23M54141-87#7728#7815
23M → 24M9431+63#7815#7752
24M → 40K8144+37#7752#7715
40K → 25.2M2335-12#7715#7727
25.2M → Finish4298-56#7727#7783
TOTALS1788857+931
📊

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