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BOSTON MARATHON 2023

Yiu Fai Woo

Bib: 27781•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M55-59)
#0 / 1422
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
8:46/mi
27:14
↑ 97↓ 3451.5%
10K· 6.21 mi
8:16/mi
52:55
↑ 79↓ 1380.4%
15K· 9.32 mi
8:42/mi
1:19:57
↑ 67↓ 78
20K· 12.43 mi
8:56/mi
1:47:42
↑ 106↓ 860.1%
Half· 13.11 mi
9:01/mi
1:53:51
↑ 19↓ 370.5%
25K· 15.53 mi
9:29/mi
2:16:51
↑ 66↓ 880.2%
30K· 18.64 mi
10:14/mi
2:48:38
↑ 181↓ 1480.2%
20M
12:06/mi
3:05:04
↑ 64↓ 500.2%
21M
13:24/mi
3:18:28
↑ 106↓ 241.6%
35K· 21.75 mi
10:39/mi
3:26:26
↑ 17↓ 861.7%
23M
11:16/mi
3:40:32
↑ 23↓ 630.6%
24M
11:06/mi
3:51:38
↓ 821.3%
40K· 24.85 mi
11:32/mi
4:01:30
↓ 200.3%
25.2M
12:11/mi
4:05:42
↑ 13↓ 160.2%
Finish· 26.22 mi
11:17/mi
4:17:12
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:51
Pace8:41 /mi
2nd Half
Distance13.11 mi
Time2:23:21
Pace10:56 /mi
📊Positive Split: 25.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:44:4827:148:4627:14
8:46
-
10K
6.21 mi12:10:2952:558:3125:41
8:16
-0:30
15K
9.32 mi12:37:311:19:578:3527:02
8:42
+0:26
20K
12.43 mi13:05:161:47:428:4027:45
8:56
+0:14
Half
13.11 mi13:11:251:53:518:416:09
9:01
+0:05
25K
15.53 mi13:34:252:16:518:4923:00
9:29
+0:28
30K
18.64 mi14:06:122:48:389:0331:47
10:14
+0:45
20M
20.00 mi14:22:383:05:049:1516:26
12:06
+1:52
21M
21.00 mi14:36:023:18:289:2713:24
13:24
+1:18
35K
21.75 mi14:44:003:26:269:307:58
10:39
-2:45
23M
23.00 mi14:58:063:40:329:3514:06
11:16
+0:37
24M
24.00 mi15:09:123:51:389:3911:06
11:06
-0:10
40K
24.85 mi15:19:044:01:309:439:52
11:32
+0:26
25.2M
25.20 mi15:23:164:05:429:454:12
12:11
+0:39
Finish
26.22 mi15:34:464:17:129:4911:30
11:17
-0:54

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

8:16 /mi

Average Pace

9:49 /mi

Slowest Pace

13:24 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:16:51

53% of race

Time at Steady Pace

1:16:27

30% of race

Time at Slower Pace

43:54

17% of race

Average Pace: 9:49 /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 mi11:44:4827:148:4627:14
8:46
#19263
10K
6.21 mi12:10:2952:558:3125:41
8:16
#17994
15K
9.32 mi12:37:311:19:578:3527:02
8:42
#18345
20K
12.43 mi13:05:161:47:428:4027:45
8:56
#18614
Half
13.11 mi13:11:251:53:518:416:09
9:01
#18722
25K
15.53 mi13:34:252:16:518:4923:00
9:29
#19137
30K
18.64 mi14:06:122:48:389:0331:47
10:14
#19797
20M
20.00 mi14:22:383:05:049:1516:26
12:06
#20448
21M
21.00 mi14:36:023:18:289:2713:24
13:24
#20860
35K
21.75 mi14:44:003:26:269:307:58
10:39
#20940
23M
23.00 mi14:58:063:40:329:3514:06
11:16
#21089
24M
24.00 mi15:09:123:51:389:3911:06
11:06
#21215
40K
24.85 mi15:19:044:01:309:439:52
11:32
#21324
25.2M
25.20 mi15:23:164:05:429:454:12
12:11
#21358
Finish
26.22 mi15:34:464:17:129:4911:30
11:17
#21540
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi19263118781187818982(Top 71%)11876(Top 78%)11876(Top 835%)
10K6.21 mi3.10 mi17994+126911443+43511443+43516693(Top 63%)10989(Top 72%)10989(Top 773%)
15K9.32 mi3.11 mi18345-35111611-16811611-16818982(Top 71%)11876(Top 78%)11876(Top 835%)
20K12.43 mi3.11 mi18614-26911717-10611717-10619372(Top 73%)12046(Top 79%)12046(Top 847%)
Half13.11 mi0.68 mi18722-10811754-3711754-3720489(Top 77%)12514(Top 82%)12514(Top 880%)
25K15.53 mi2.42 mi19137-41511917-16311917-16320791(Top 78%)12610(Top 83%)12610(Top 887%)
30K18.64 mi3.11 mi19797-66012164-24712164-24721595(Top 81%)12896(Top 85%)12896(Top 907%)
20M20.00 mi1.36 mi20448-65112435-27112435-27124305(Top 91%)14042(Top 93%)14042(Top 987%)
21M21.00 mi1.00 mi20860-41212609-17412609-17424485(Top 92%)14129(Top 93%)14129(Top 994%)
35K21.75 mi0.75 mi20940-8012632-2312632-2322659(Top 85%)13235(Top 87%)13235(Top 931%)
23M23.00 mi1.25 mi21089-14912685-5312685-5322827(Top 86%)13303(Top 88%)13303(Top 936%)
24M24.00 mi1.00 mi21215-12612734-4912734-4923219(Top 87%)13446(Top 89%)13446(Top 946%)
40K24.85 mi0.85 mi21324-10912777-4312777-4323261(Top 87%)13433(Top 89%)13433(Top 945%)
25.2M25.20 mi0.35 mi21358-3412786-912786-922782(Top 86%)13215(Top 87%)13215(Top 929%)
Finish26.22 mi1.02 mi21540-18212861-7512861-7524398(Top 92%)14020(Top 92%)14020(Top 986%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 71%
×21story building
+97ft-345ft

Overall

18982

Males

11876

M55-59

11876

5K→10K

3.1 - 6.2 mi

Top 63%
×5story building
+79ft-138ft

Overall

16693

Males

10989

M55-59

10989

10K→15K

6.2 - 9.3 mi

Top 71%
×3story building
+67ft-78ft

Overall

18982

Males

11876

M55-59

11876

15K→20K

9.3 - 12.4 mi

Top 73%
×5story building
+106ft-86ft

Overall

19372

Males

12046

M55-59

12046

20K→Half

12.4 - 13.1 mi

Top 77%
×2story building
+19ft-37ft

Overall

20489

Males

12514

M55-59

12514

Half→25K

13.1 - 15.5 mi

Top 78%
×4story building
+66ft-88ft

Overall

20791

Males

12610

M55-59

12610

25K→30K

15.5 - 18.6 mi

Top 81%
×9story building
+181ft-148ft

Overall

21595

Males

12896

M55-59

12896

30K→20M

18.6 - 20.0 mi

Top 91%
×5story building
+64ft-50ft

Overall

24305

Males

14042

M55-59

14042

20M→21M

20.0 - 21.0 mi

Top 92%
×8story building
+106ft-24ft

Overall

24485

Males

14129

M55-59

14129

21M→35K

21.0 - 21.8 mi

Top 85%
×7story building
+17ft-86ft

Overall

22659

Males

13235

M55-59

13235

35K→23M

21.8 - 23.0 mi

Top 86%
×5story building
+23ft-63ft

Overall

22827

Males

13303

M55-59

13303

23M→24M

23.0 - 24.0 mi

Top 87%
×6story building
+12ft-82ft

Overall

23219

Males

13446

M55-59

13446

24M→40K

24.0 - 24.9 mi

Top 87%
×1story
+6ft-20ft

Overall

23261

Males

13433

M55-59

13433

40K→25.2M

24.9 - 25.2 mi

Top 86%
×1story
+13ft-16ft

Overall

22782

Males

13215

M55-59

13215

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2story building
+22ft-21ft

Overall

24398

Males

14020

M55-59

14020

Passing Analysis

Category:
Athletes Passed
1712
Passed By
3989
Net Change
-2277
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19263
5K → 10K133566+1269#19263#17994
10K → 15K81432-351#17994#18345
15K → 20K80349-269#18345#18614
20K → Half8116-108#18614#18722
Half → 25K41456-415#18722#19137
25K → 30K45705-660#19137#19797
30K → 20M10661-651#19797#20448
20M → 21M9421-412#20448#20860
21M → 35K1595-80#20860#20940
35K → 23M30179-149#20940#21089
23M → 24M17143-126#21089#21215
24M → 40K18127-109#21215#21324
40K → 25.2M1549-34#21324#21358
25.2M → Finish8190-182#21358#21540
TOTALS17123989-2277
📊

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