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BOSTON MARATHON 2023

Yan Liang

Bib: 12748•M

BC

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M50-54)
#0 / 2052
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
8:38/mi
26:50
↑ 97↓ 3451.5%
10K· 6.21 mi
9:08/mi
55:13
↑ 79↓ 1380.4%
15K· 9.32 mi
8:58/mi
1:23:06
↑ 67↓ 78
20K· 12.43 mi
9:25/mi
1:52:22
↑ 106↓ 860.1%
Half· 13.11 mi
8:49/mi
1:58:23
↑ 19↓ 370.5%
25K· 15.53 mi
9:09/mi
2:20:35
↑ 66↓ 880.2%
30K· 18.64 mi
9:31/mi
2:50:09
↑ 181↓ 1480.2%
20M
9:35/mi
3:03:11
↑ 64↓ 500.2%
21M
10:37/mi
3:13:48
↑ 106↓ 241.6%
35K· 21.75 mi
9:27/mi
3:20:52
↑ 17↓ 861.7%
23M
9:42/mi
3:33:01
↑ 23↓ 630.6%
24M
9:19/mi
3:42:20
↓ 821.3%
40K· 24.85 mi
9:23/mi
3:50:21
↓ 200.3%
25.2M
11:30/mi
3:54:19
↑ 13↓ 160.2%
Finish· 26.22 mi
9:30/mi
4:04:00
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:23
Pace9:02 /mi
2nd Half
Distance13.11 mi
Time2:05:37
Pace9:35 /mi
📊Positive Split: 6.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:17:2826:508:3826:50
8:38
-
10K
6.21 mi11:45:5155:138:5328:23
9:08
+0:30
15K
9.32 mi12:13:441:23:068:5527:53
8:58
-0:10
20K
12.43 mi12:43:001:52:229:0329:16
9:25
+0:27
Half
13.11 mi12:49:011:58:239:026:01
8:49
-0:36
25K
15.53 mi13:11:132:20:359:0322:12
9:09
+0:20
30K
18.64 mi13:40:472:50:099:0829:34
9:31
+0:22
20M
20.00 mi13:53:493:03:119:1013:02
9:35
+0:04
21M
21.00 mi14:04:263:13:489:1410:37
10:37
+1:02
35K
21.75 mi14:11:303:20:529:147:04
9:27
-1:10
23M
23.00 mi14:23:393:33:019:1612:09
9:42
+0:15
24M
24.00 mi14:32:583:42:209:169:19
9:19
-0:23
40K
24.85 mi14:40:593:50:219:168:01
9:23
+0:04
25.2M
25.20 mi14:44:573:54:199:183:58
11:30
+2:07
Finish
26.22 mi14:54:384:04:009:199:41
9:30
-2:00

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

8:38 /mi

Average Pace

9:19 /mi

Slowest Pace

11:30 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:00:44

25% of race

Time at Steady Pace

2:48:41

69% of race

Time at Slower Pace

14:35

6% of race

Average Pace: 9:18 /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 mi11:17:2826:508:3826:50
8:38
#18458
10K
6.21 mi11:45:5155:138:5328:23
9:08
#20127
15K
9.32 mi12:13:441:23:068:5527:53
8:58
#20189
20K
12.43 mi12:43:001:52:229:0329:16
9:25
#20544
Half
13.11 mi12:49:011:58:239:026:01
8:49
#20492
25K
15.53 mi13:11:132:20:359:0322:12
9:09
#20356
30K
18.64 mi13:40:472:50:099:0829:34
9:31
#20179
20M
20.00 mi13:53:493:03:119:1013:02
9:35
#20088
21M
21.00 mi14:04:263:13:489:1410:37
10:37
#20069
35K
21.75 mi14:11:303:20:529:147:04
9:27
#20043
23M
23.00 mi14:23:393:33:019:1612:09
9:42
#19984
24M
24.00 mi14:32:583:42:209:169:19
9:19
#19920
40K
24.85 mi14:40:593:50:219:168:01
9:23
#19838
25.2M
25.20 mi14:44:573:54:199:183:58
11:30
#19900
Finish
26.22 mi14:54:384:04:009:199:41
9:30
#19903
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi18458115921159220383(Top 77%)12472(Top 82%)12472(Top 608%)
10K6.21 mi3.10 mi20127-166912270-67812270-67821412(Top 80%)12884(Top 85%)12884(Top 628%)
15K9.32 mi3.11 mi20189-6212331-6112331-6120383(Top 77%)12472(Top 82%)12472(Top 608%)
20K12.43 mi3.11 mi20544-35512500-16912500-16921295(Top 80%)12875(Top 85%)12875(Top 627%)
Half13.11 mi0.68 mi20492+5212482+1812482+1819573(Top 74%)12136(Top 80%)12136(Top 591%)
25K15.53 mi2.42 mi20356+13612429+5312429+5319638(Top 74%)12125(Top 80%)12125(Top 591%)
30K18.64 mi3.11 mi20179+17712328+10112328+10119488(Top 73%)12003(Top 79%)12003(Top 585%)
20M20.00 mi1.36 mi20088+9112272+5612272+5619182(Top 72%)11773(Top 78%)11773(Top 574%)
21M21.00 mi1.00 mi20069+1912262+1012262+1019919(Top 75%)12013(Top 79%)12013(Top 585%)
35K21.75 mi0.75 mi20043+2612242+2012242+2019687(Top 74%)11917(Top 79%)11917(Top 581%)
23M23.00 mi1.25 mi19984+5912204+3812204+3819081(Top 72%)11610(Top 77%)11610(Top 566%)
24M24.00 mi1.00 mi19920+6412174+3012174+3018514(Top 70%)11320(Top 75%)11320(Top 552%)
40K24.85 mi0.85 mi19838+8212130+4412130+4417844(Top 67%)10966(Top 72%)10966(Top 534%)
25.2M25.20 mi0.35 mi19900-6212156-2612156-2621540(Top 81%)12631(Top 83%)12631(Top 616%)
Finish26.22 mi1.02 mi19903-312146+1012146+1020124(Top 76%)12032(Top 79%)12032(Top 586%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 77%
×21story building
+97ft-345ft

Overall

20383

Males

12472

M50-54

12472

5K→10K

3.1 - 6.2 mi

Top 80%
×5story building
+79ft-138ft

Overall

21412

Males

12884

M50-54

12884

10K→15K

6.2 - 9.3 mi

Top 77%
×3story building
+67ft-78ft

Overall

20383

Males

12472

M50-54

12472

15K→20K

9.3 - 12.4 mi

Top 80%
×5story building
+106ft-86ft

Overall

21295

Males

12875

M50-54

12875

20K→Half

12.4 - 13.1 mi

Top 74%
×2story building
+19ft-37ft

Overall

19573

Males

12136

M50-54

12136

Half→25K

13.1 - 15.5 mi

Top 74%
×4story building
+66ft-88ft

Overall

19638

Males

12125

M50-54

12125

25K→30K

15.5 - 18.6 mi

Top 73%
×9story building
+181ft-148ft

Overall

19488

Males

12003

M50-54

12003

30K→20M

18.6 - 20.0 mi

Top 72%
×5story building
+64ft-50ft

Overall

19182

Males

11773

M50-54

11773

20M→21M

20.0 - 21.0 mi

Top 75%
×8story building
+106ft-24ft

Overall

19919

Males

12013

M50-54

12013

21M→35K

21.0 - 21.8 mi

Top 74%
×7story building
+17ft-86ft

Overall

19687

Males

11917

M50-54

11917

35K→23M

21.8 - 23.0 mi

Top 72%
×5story building
+23ft-63ft

Overall

19081

Males

11610

M50-54

11610

23M→24M

23.0 - 24.0 mi

Top 70%
×6story building
+12ft-82ft

Overall

18514

Males

11320

M50-54

11320

24M→40K

24.0 - 24.9 mi

Top 67%
×1story
+6ft-20ft

Overall

17844

Males

10966

M50-54

10966

40K→25.2M

24.9 - 25.2 mi

Top 81%
×1story
+13ft-16ft

Overall

21540

Males

12631

M50-54

12631

25.2M→Finish

25.2 - 26.2 mi

Top 76%
×2story building
+22ft-21ft

Overall

20124

Males

12032

M50-54

12032

Passing Analysis

Category:
Athletes Passed
1326
Passed By
2771
Net Change
-1445
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18458
5K → 10K261695-1669#18458#20127
10K → 15K145207-62#20127#20189
15K → 20K72427-355#20189#20544
20K → Half6210+52#20544#20492
Half → 25K18347+136#20492#20356
25K → 30K23558+177#20356#20179
30K → 20M13140+91#20179#20088
20M → 21M8465+19#20088#20069
21M → 35K5630+26#20069#20043
35K → 23M9940+59#20043#19984
23M → 24M9026+64#19984#19920
24M → 40K908+82#19920#19838
40K → 25.2M1072-62#19838#19900
25.2M → Finish4346-3#19900#19903
TOTALS13262771-1445
📊

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