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BOSTON MARATHON 2025

Brian Yau

Bib: 6595•M

CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:36
Rank: #4875
Start → 5K
20:36 | 6:38/mi
10K· 6.21 mi
43:27
Rank: #7800 (-2925)
5K → 10K
22:51 | 7:21/mi
15K· 9.32 mi
1:07:17
Rank: #9490 (-1690)
10K → 15K
23:50 | 7:40/mi
20K· 12.43 mi
1:31:31
Rank: #10437 (-947)
15K → 20K
24:14 | 7:48/mi
Half· 13.11 mi
1:36:31
Rank: #10422 (+15)
20K → Half
5:00 | 7:20/mi
25K· 15.53 mi
1:56:22
Rank: #11255 (-833)
Half → 25K
19:51 | 8:11/mi
30K· 18.64 mi
2:24:03
Rank: #12490 (-1235)
25K → 30K
27:41 | 8:55/mi
20M
2:37:00
Rank: #13126 (-636)
30K → 20M
12:57 | 9:32/mi
21M
2:47:34
Rank: #13694 (-568)
20M → 21M
10:34 | 10:34/mi
35K· 21.75 mi
2:55:18
Rank: #14285 (-591)
21M → 35K
7:44 | 10:20/mi
23M
3:08:40
Rank: #15050 (-765)
35K → 23M
13:22 | 10:41/mi
24M
3:19:09
Rank: #15572 (-522)
23M → 24M
10:29 | 10:29/mi
40K· 24.85 mi
3:27:54
Rank: #15844 (-272)
24M → 40K
8:45 | 10:14/mi
25.2M
3:31:30
Rank: #15892 (-48)
40K → 25.2M
3:36 | 10:26/mi
Finish· 26.22 mi
3:40:09
Rank: #15906 (-14)
25.2M → Finish
8:39 | 8:29/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:36:31
Pace7:22 /mi
2nd Half
Distance13.11 mi
Time2:03:38
Pace9:26 /mi
📊Positive Split: 28.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:27:0820:366:3820:36
6:38
-
10K
6.21 mi10:49:5943:277:0022:51
7:21
+0:43
15K
9.32 mi11:13:491:07:177:1323:50
7:40
+0:19
20K
12.43 mi11:38:031:31:317:2224:14
7:48
+0:08
Half
13.11 mi11:43:031:36:317:225:00
7:20
-0:28
25K
15.53 mi12:02:541:56:227:2919:51
8:11
+0:51
30K
18.64 mi12:30:352:24:037:4427:41
8:55
+0:44
20M
20.00 mi12:43:322:37:007:5112:57
9:32
+0:37
21M
21.00 mi12:54:062:47:347:5910:34
10:34
+1:02
35K
21.75 mi13:01:502:55:188:047:44
10:20
-0:14
23M
23.00 mi13:15:123:08:408:1213:22
10:41
+0:21
24M
24.00 mi13:25:413:19:098:1810:29
10:29
-0:12
40K
24.85 mi13:34:263:27:548:228:45
10:14
-0:15
25.2M
25.20 mi13:38:023:31:308:243:36
10:26
+0:12
Finish
26.22 mi13:46:413:40:098:248:39
8:29
-1:57

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

6:38 /mi

Average Pace

8:24 /mi

Slowest Pace

10:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:56:22

53% of race

Time at Steady Pace

49:17

22% of race

Time at Slower Pace

54:30

25% of race

Average Pace: 8:24 /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 mi10:27:0820:366:3820:36
6:38
#4875
10K
6.21 mi10:49:5943:277:0022:51
7:21
#7800
15K
9.32 mi11:13:491:07:177:1323:50
7:40
#9490
20K
12.43 mi11:38:031:31:317:2224:14
7:48
#10437
Half
13.11 mi11:43:031:36:317:225:00
7:20
#10422
25K
15.53 mi12:02:541:56:227:2919:51
8:11
#11255
30K
18.64 mi12:30:352:24:037:4427:41
8:55
#12490
20M
20.00 mi12:43:322:37:007:5112:57
9:32
#13126
21M
21.00 mi12:54:062:47:347:5910:34
10:34
#13694
35K
21.75 mi13:01:502:55:188:047:44
10:20
#14285
23M
23.00 mi13:15:123:08:408:1213:22
10:41
#15050
24M
24.00 mi13:25:413:19:098:1810:29
10:29
#15572
40K
24.85 mi13:34:263:27:548:228:45
10:14
#15844
25.2M
25.20 mi13:38:023:31:308:243:36
10:26
#15892
Finish
26.22 mi13:46:413:40:098:248:39
8:29
#15906
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi48754565456513217(Top 47%)9618(Top 60%)9618(Top 428%)
10K6.21 mi3.10 mi7800-29256855-22906855-229010790(Top 38%)8560(Top 53%)8560(Top 381%)
15K9.32 mi3.11 mi9490-16907872-10177872-101713217(Top 47%)9618(Top 60%)9618(Top 428%)
20K12.43 mi3.11 mi10437-9478342-4708342-47013271(Top 47%)9546(Top 59%)9546(Top 425%)
Half13.11 mi0.68 mi10422+158322+208322+2010275(Top 36%)8191(Top 51%)8191(Top 365%)
25K15.53 mi2.42 mi11255-8338707-3858707-38515222(Top 54%)10322(Top 64%)10322(Top 459%)
30K18.64 mi3.11 mi12490-12359195-4889195-48817206(Top 61%)11022(Top 68%)11022(Top 491%)
20M20.00 mi1.36 mi13126-6369443-2489443-24819285(Top 68%)11812(Top 73%)11812(Top 526%)
21M21.00 mi1.00 mi13694-5689655-2129655-21220201(Top 71%)12123(Top 75%)12123(Top 540%)
35K21.75 mi0.75 mi14285-5919908-2539908-25322772(Top 80%)13283(Top 82%)13283(Top 591%)
23M23.00 mi1.25 mi15050-76510213-30510213-30522458(Top 79%)13081(Top 81%)13081(Top 582%)
24M24.00 mi1.00 mi15572-52210396-18310396-18322754(Top 80%)13176(Top 82%)13176(Top 586%)
40K24.85 mi0.85 mi15844-27210488-9210488-9221156(Top 74%)12354(Top 77%)12354(Top 550%)
25.2M25.20 mi0.35 mi15892-4810490-210490-218735(Top 66%)11179(Top 69%)11179(Top 498%)
Finish26.22 mi1.02 mi15906-1410481+910481+916125(Top 57%)9991(Top 62%)9991(Top 445%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 47%
×21stories
+97ft-345ft

Overall

13217

Males

9618

M40-44

9618

5K→10K

3.1 - 6.2 mi

Top 38%
×5stories
+79ft-138ft

Overall

10790

Males

8560

M40-44

8560

10K→15K

6.2 - 9.3 mi

Top 47%
×3stories
+67ft-78ft

Overall

13217

Males

9618

M40-44

9618

15K→20K

9.3 - 12.4 mi

Top 47%
×5stories
+106ft-86ft

Overall

13271

Males

9546

M40-44

9546

20K→Half

12.4 - 13.1 mi

Top 36%
×2stories
+19ft-37ft

Overall

10275

Males

8191

M40-44

8191

Half→25K

13.1 - 15.5 mi

Top 54%
×4stories
+66ft-88ft

Overall

15222

Males

10322

M40-44

10322

25K→30K

15.5 - 18.6 mi

Top 61%
×9stories
+181ft-148ft

Overall

17206

Males

11022

M40-44

11022

30K→20M

18.6 - 20.0 mi

Top 68%
×5stories
+64ft-50ft

Overall

19285

Males

11812

M40-44

11812

20M→21M

20.0 - 21.0 mi

Top 71%
×8stories
+106ft-24ft

Overall

20201

Males

12123

M40-44

12123

21M→35K

21.0 - 21.8 mi

Top 80%
×7stories
+17ft-86ft

Overall

22772

Males

13283

M40-44

13283

35K→23M

21.8 - 23.0 mi

Top 79%
×5stories
+23ft-63ft

Overall

22458

Males

13081

M40-44

13081

23M→24M

23.0 - 24.0 mi

Top 80%
×6stories
+12ft-82ft

Overall

22754

Males

13176

M40-44

13176

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

21156

Males

12354

M40-44

12354

40K→25.2M

24.9 - 25.2 mi

Top 66%
×1story
+13ft-16ft

Overall

18735

Males

11179

M40-44

11179

25.2M→Finish

25.2 - 26.2 mi

Top 57%
×2stories
+22ft-21ft

Overall

16125

Males

9991

M40-44

9991

Passing Analysis

Category:
Athletes Passed
372
Passed By
11401
Net Change
-11031
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4875
5K → 10K32928-2925#4875#7800
10K → 15K121702-1690#7800#9490
15K → 20K36981-947#9490#10437
20K → Half4631+15#10437#10422
Half → 25K39872-833#10422#11255
25K → 30K441279-1235#11255#12490
30K → 20M31667-636#12490#13126
20M → 21M21589-568#13126#13694
21M → 35K3594-591#13694#14285
35K → 23M17782-765#14285#15050
23M → 24M7529-522#15050#15572
24M → 40K26298-272#15572#15844
40K → 25.2M2270-48#15844#15892
25.2M → Finish6579-14#15892#15906
TOTALS37211401-11031
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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