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BOSTON MARATHON 2023

Liang Gang Yu

Bib: 11641•M

WA

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Top 32%
Gender (Male)
#0 / 15176
Top 47%
Masters (Masters Men)
#0 / 9891
Top 35%
Division (M45-49)
#0 / 2252
Top 48%
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
7:43/mi
24:00
↑ 97↓ 3451.5%
10K· 6.21 mi
7:28/mi
47:12
↑ 79↓ 1380.4%
15K· 9.32 mi
7:30/mi
1:10:31
↑ 67↓ 78
20K· 12.43 mi
7:39/mi
1:34:18
↑ 106↓ 860.1%
Half· 13.11 mi
7:31/mi
1:39:26
↑ 19↓ 370.5%
25K· 15.53 mi
7:36/mi
1:57:51
↑ 66↓ 880.2%
30K· 18.64 mi
7:47/mi
2:22:02
↑ 181↓ 1480.2%
20M
7:37/mi
2:32:23
↑ 64↓ 500.2%
21M
7:45/mi
2:40:08
↑ 106↓ 241.6%
35K· 21.75 mi
7:14/mi
2:45:33
↑ 17↓ 861.7%
23M
7:34/mi
2:55:01
↑ 23↓ 630.6%
24M
7:21/mi
3:02:22
↓ 821.3%
40K· 24.85 mi
7:19/mi
3:08:37
↓ 200.3%
25.2M
7:21/mi
3:11:09
↑ 13↓ 160.2%
Finish· 26.22 mi
6:37/mi
3:17:54
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:39:26
Pace7:35 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:38:28
Pace7:31 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:1824:007:4324:00
7:43
-
10K
6.21 mi11:14:3047:127:3623:12
7:28
-0:15
15K
9.32 mi11:37:491:10:317:3423:19
7:30
+0:02
20K
12.43 mi12:01:361:34:187:3523:47
7:39
+0:09
Half
13.11 mi12:06:441:39:267:355:08
7:31
-0:08
25K
15.53 mi12:25:091:57:517:3518:25
7:36
+0:05
30K
18.64 mi12:49:202:22:027:3724:11
7:47
+0:11
20M
20.00 mi12:59:412:32:237:3710:21
7:37
-0:10
21M
21.00 mi13:07:262:40:087:387:45
7:45
+0:08
35K
21.75 mi13:12:512:45:337:375:25
7:14
-0:31
23M
23.00 mi13:22:192:55:017:379:28
7:34
+0:20
24M
24.00 mi13:29:403:02:227:367:21
7:21
-0:13
40K
24.85 mi13:35:553:08:377:356:15
7:19
-0:02
25.2M
25.20 mi13:38:273:11:097:352:32
7:21
+0:02
Finish
26.22 mi13:45:123:17:547:336:45
6:37
-0:44

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

6:37 /mi

Average Pace

7:33 /mi

Slowest Pace

7:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

12:10

6% of race

Time at Steady Pace

3:05:44

94% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:33 /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 mi10:51:1824:007:4324:00
7:43
#11660
10K
6.21 mi11:14:3047:127:3623:12
7:28
#10876
15K
9.32 mi11:37:491:10:317:3423:19
7:30
#10621
20K
12.43 mi12:01:361:34:187:3523:47
7:39
#10592
Half
13.11 mi12:06:441:39:267:355:08
7:31
#10583
25K
15.53 mi12:25:091:57:517:3518:25
7:36
#10358
30K
18.64 mi12:49:202:22:027:3724:11
7:47
#10123
20M
20.00 mi12:59:412:32:237:3710:21
7:37
#9886
21M
21.00 mi13:07:262:40:087:387:45
7:45
#9639
35K
21.75 mi13:12:512:45:337:375:25
7:14
#9506
23M
23.00 mi13:22:192:55:017:379:28
7:34
#9280
24M
24.00 mi13:29:403:02:227:367:21
7:21
#9146
40K
24.85 mi13:35:553:08:377:356:15
7:19
#8991
25.2M
25.20 mi13:38:273:11:097:352:32
7:21
#8860
Finish
26.22 mi13:45:123:17:547:336:45
6:37
#8587
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi116608966896610196(Top 38%)8244(Top 54%)8244(Top 366%)
10K6.21 mi3.10 mi10876+7848598+3688598+36810188(Top 38%)8265(Top 54%)8265(Top 367%)
15K9.32 mi3.11 mi10621+2558477+1218477+12110196(Top 38%)8244(Top 54%)8244(Top 366%)
20K12.43 mi3.11 mi10592+298455+228455+2210539(Top 40%)8353(Top 55%)8353(Top 371%)
Half13.11 mi0.68 mi10583+98457-28457-210351(Top 39%)8260(Top 54%)8260(Top 367%)
25K15.53 mi2.42 mi10358+2258319+1388319+1389489(Top 36%)7700(Top 51%)7700(Top 342%)
30K18.64 mi3.11 mi10123+2358158+1618158+1619221(Top 35%)7404(Top 49%)7404(Top 329%)
20M20.00 mi1.36 mi9886+2378003+1558003+1557595(Top 29%)6340(Top 42%)6340(Top 282%)
21M21.00 mi1.00 mi9639+2477846+1577846+1575920(Top 22%)5147(Top 34%)5147(Top 229%)
35K21.75 mi0.75 mi9506+1337744+1027744+1026779(Top 25%)5765(Top 38%)5765(Top 256%)
23M23.00 mi1.25 mi9280+2267577+1677577+1676806(Top 26%)5704(Top 38%)5704(Top 253%)
24M24.00 mi1.00 mi9146+1347480+977480+976726(Top 25%)5565(Top 37%)5565(Top 247%)
40K24.85 mi0.85 mi8991+1557371+1097371+1095527(Top 21%)4714(Top 31%)4714(Top 209%)
25.2M25.20 mi0.35 mi8860+1317276+957276+953241(Top 12%)2964(Top 20%)2964(Top 132%)
Finish26.22 mi1.02 mi8587+2737100+1767100+1763135(Top 12%)2830(Top 19%)2830(Top 126%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10196

Males

8244

M45-49

8244

5K→10K

3.1 - 6.2 mi

Top 38%
×5story building
+79ft-138ft

Overall

10188

Males

8265

M45-49

8265

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10196

Males

8244

M45-49

8244

15K→20K

9.3 - 12.4 mi

Top 40%
×5story building
+106ft-86ft

Overall

10539

Males

8353

M45-49

8353

20K→Half

12.4 - 13.1 mi

Top 39%
×2story building
+19ft-37ft

Overall

10351

Males

8260

M45-49

8260

Half→25K

13.1 - 15.5 mi

Top 36%
×4story building
+66ft-88ft

Overall

9489

Males

7700

M45-49

7700

25K→30K

15.5 - 18.6 mi

Top 35%
×9story building
+181ft-148ft

Overall

9221

Males

7404

M45-49

7404

30K→20M

18.6 - 20.0 mi

Top 29%
×5story building
+64ft-50ft

Overall

7595

Males

6340

M45-49

6340

20M→21M

20.0 - 21.0 mi

Top 22%
×8story building
+106ft-24ft

Overall

5920

Males

5147

M45-49

5147

21M→35K

21.0 - 21.8 mi

Top 25%
×7story building
+17ft-86ft

Overall

6779

Males

5765

M45-49

5765

35K→23M

21.8 - 23.0 mi

Top 26%
×5story building
+23ft-63ft

Overall

6806

Males

5704

M45-49

5704

23M→24M

23.0 - 24.0 mi

Top 25%
×6story building
+12ft-82ft

Overall

6726

Males

5565

M45-49

5565

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

5527

Males

4714

M45-49

4714

40K→25.2M

24.9 - 25.2 mi

Top 12%
×1story
+13ft-16ft

Overall

3241

Males

2964

M45-49

2964

25.2M→Finish

25.2 - 26.2 mi

Top 12%
×2story building
+22ft-21ft

Overall

3135

Males

2830

M45-49

2830

Passing Analysis

Category:
Athletes Passed
3508*
Passed By
435
Net Change
+3073
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#11660
5K → 10K85268+784#11660#10876
10K → 15K33580+255#10876#10621
15K → 20K172143+29#10621#10592
20K → Half4233+9#10592#10583
Half → 25K25732+225#10583#10358
25K → 30K286*51+235#10358#10123
30K → 20M244*7+237#10123#9886
20M → 21M2525+247#9886#9639
21M → 35K1363+133#9639#9506
35K → 23M2315+226#9506#9280
23M → 24M1406+134#9280#9146
24M → 40K1561+155#9146#8991
40K → 25.2M1321+131#8991#8860
25.2M → Finish2730+273#8860#8587
TOTALS3508*435+3073

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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