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BOSTON MARATHON 2025

Jason Bui

MA

Bib: 8572 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 17%
Gender (Male)
#0 / 16105
Top 28%
Masters (Masters Men)
#0 / 10463
Top 14%
Division (M40-44)
#0 / 2247
Top 36%
Race Day Weather
50°/40°F
broken clouds

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
6:52/mi
21:19
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
6:44/mi
42:15
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
6:47/mi
1:03:19
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
6:50/mi
1:24:32
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
6:40/mi
1:29:05
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
6:48/mi
1:45:34
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
6:56/mi
2:07:07
↑ 181↓ 1480.2%
138 ft elev
20M
7:03/mi
2:16:42
↑ 64↓ 500.2%
148 ft elev
21M
7:31/mi
2:24:13
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
6:54/mi
2:29:23
↑ 17↓ 861.7%
156 ft elev
23M
7:14/mi
2:38:26
↑ 23↓ 630.6%
116 ft elev
24M
7:04/mi
2:45:30
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:14/mi
2:51:41
↓ 200.3%
20 ft elev
25.2M
7:47/mi
2:54:22
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
6:45/mi
3:01:15
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:29:056:48 /mi⚡ faster
2nd Half
1:32:107:02 /mi+3.5%
Positive split — 3.5% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
21:196:523.11 mi21:19
6:52
-
10K
42:156:483.10 mi20:56
6:44
-0:08
15K
1:03:196:483.11 mi21:04
6:47
+0:03
20K
1:24:326:483.11 mi21:13
6:50
+0:03
Half(13.11 mi)
1:29:056:480.68 mi4:33
6:40
-0:10
25K
1:45:346:482.42 mi16:29
6:48
+0:08
30K
2:07:076:493.11 mi21:33
6:56
+0:08
20M
2:16:426:501.36 mi9:35
7:03
+0:07
21M
2:24:136:521.00 mi7:31
7:31
+0:28
35K
2:29:236:520.75 mi5:10
6:54
-0:37
23M
2:38:266:531.25 mi9:03
7:14
+0:20
24M
2:45:306:541.00 mi7:04
7:04
-0:10
40K
2:51:416:540.85 mi6:11
7:14
+0:10
25.2M
2:54:226:550.35 mi2:41
7:47
+0:33
Finish(26.22 mi)
3:01:156:551.02 mi6:53
6:45
-1:02
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

6:40 /mi

Average Pace

6:55 /mi

Slowest Pace

7:47 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

2:51:03

94% of race

Time at Steady Pace

10:12

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:55 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

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0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi675961246124587253465346
10K3.10 mi6281+4785747+3775747+377568352125212
15K3.11 mi6114+1675597+1505597+150587253465346
20K3.11 mi5959+1555451+1465451+146556950765076
Half(13.11 mi)0.68 mi5907+525411+405411+40497045994599
25K2.42 mi5678+2295209+2025209+202484744554455
30K3.11 mi5325+3534890+3194890+319431339563956
20M1.36 mi5218+1074785+1054785+105440340094009
21M1.00 mi5172+464745+404745+40467341304130
35K0.75 mi5145+274717+284717+28473641794179
23M1.25 mi5105+404670+474670+47502043274327
24M1.00 mi5086+194642+284642+28499442514251
40K0.85 mi5059+274613+294613+29518543264326
25.2M0.35 mi5033+264588+254588+25471439123912
Finish(26.22 mi)1.02 mi4967+664520+684520+68421035873587

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21story building
+97ft-345ft

Overall

5872

Males

5346

M40-44

5346

5K→10K

3.1 - 6.2 mi

Top 20%
×5story building
+79ft-138ft

Overall

5683

Males

5212

M40-44

5212

10K→15K

6.2 - 9.3 mi

Top 21%
×3story building
+67ft-78ft

Overall

5872

Males

5346

M40-44

5346

15K→20K

9.3 - 12.4 mi

Top 20%
×5story building
+106ft-86ft

Overall

5569

Males

5076

M40-44

5076

20K→Half

12.4 - 13.1 mi

Top 17%
×2story building
+19ft-37ft

Overall

4970

Males

4599

M40-44

4599

Half→25K

13.1 - 15.5 mi

Top 17%
×4story building
+66ft-88ft

Overall

4847

Males

4455

M40-44

4455

25K→30K

15.5 - 18.6 mi

Top 15%
×9story building
+181ft-148ft

Overall

4313

Males

3956

M40-44

3956

30K→20M

18.6 - 20.0 mi

Top 16%
×5story building
+64ft-50ft

Overall

4403

Males

4009

M40-44

4009

20M→21M

20.0 - 21.0 mi

Top 16%
×8story building
+106ft-24ft

Overall

4673

Males

4130

M40-44

4130

21M→35K

21.0 - 21.8 mi

Top 17%
×7story building
+17ft-86ft

Overall

4736

Males

4179

M40-44

4179

35K→23M

21.8 - 23.0 mi

Top 18%
×5story building
+23ft-63ft

Overall

5020

Males

4327

M40-44

4327

23M→24M

23.0 - 24.0 mi

Top 18%
×6story building
+12ft-82ft

Overall

4994

Males

4251

M40-44

4251

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

5185

Males

4326

M40-44

4326

40K→25.2M

24.9 - 25.2 mi

Top 17%
×1story
+13ft-16ft

Overall

4714

Males

3912

M40-44

3912

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2story building
+22ft-21ft

Overall

4210

Males

3587

M40-44

3587

Passing Analysis

Category:
Passed
2288
Passed By
496
Net Change
+1792
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6759
5K → 10K51638+478#6759#6281
10K → 15K23669+167#6281#6114
15K → 20K21863+155#6114#5959
20K → Half586+52#5959#5907
Half → 25K24415+229#5907#5678
25K → 30K38229+353#5678#5325
30K → 20M13023+107#5325#5218
20M → 21M10559+46#5218#5172
21M → 35K5629+27#5172#5145
35K → 23M10363+40#5145#5105
23M → 24M6243+19#5105#5086
24M → 40K6235+27#5086#5059
40K → 25.2M326+26#5059#5033
25.2M → Finish8418+66#5033#4967
TOTALS2288496+1792

Passing Charts

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