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BOSTON MARATHON 2025

Alex Tan

Bib: 10767•M

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M45-49)
#0 / 2386
Race Day Weather
50°/40°F
broken clouds

⏱️ 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
7:31/mi
23:20
↑ 97↓ 3451.5%
10K· 6.21 mi
7:27/mi
46:28
↑ 79↓ 1380.4%
15K· 9.32 mi
7:39/mi
1:10:15
↑ 67↓ 78
20K· 12.43 mi
8:19/mi
1:36:06
↑ 106↓ 860.1%
Half· 13.11 mi
8:30/mi
1:41:54
↑ 19↓ 370.5%
25K· 15.53 mi
8:48/mi
2:03:14
↑ 66↓ 880.2%
30K· 18.64 mi
9:35/mi
2:33:01
↑ 181↓ 1480.2%
20M
14:04/mi
2:52:08
↑ 64↓ 500.2%
21M
12:21/mi
3:04:29
↑ 106↓ 241.6%
35K· 21.75 mi
10:10/mi
3:12:05
↑ 17↓ 861.7%
23M
12:30/mi
3:27:44
↑ 23↓ 630.6%
24M
11:28/mi
3:39:12
↓ 821.3%
40K· 24.85 mi
10:13/mi
3:47:56
↓ 200.3%
25.2M
10:09/mi
3:51:26
↑ 13↓ 160.2%
Finish· 26.22 mi
7:58/mi
3:59:33
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:41:54
Pace7:46 /mi
2nd Half
Distance13.11 mi
Time2:17:39
Pace10:30 /mi
📊Positive Split: 35.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:50:5723:207:3123:20
7:31
-
10K
6.21 mi11:14:0546:287:2923:08
7:27
-0:04
15K
9.32 mi11:37:521:10:157:3223:47
7:39
+0:12
20K
12.43 mi12:03:431:36:067:4425:51
8:19
+0:40
Half
13.11 mi12:09:311:41:547:465:48
8:30
+0:11
25K
15.53 mi12:30:512:03:147:5621:20
8:48
+0:18
30K
18.64 mi13:00:382:33:018:1329:47
9:35
+0:47
20M
20.00 mi13:19:452:52:088:3619:07
14:04
+4:29
21M
21.00 mi13:32:063:04:298:4712:21
12:21
-1:43
35K
21.75 mi13:39:423:12:058:507:36
10:10
-2:11
23M
23.00 mi13:55:213:27:449:0215:39
12:30
+2:20
24M
24.00 mi14:06:493:39:129:0811:28
11:28
-1:02
40K
24.85 mi14:15:333:47:569:108:44
10:13
-1:15
25.2M
25.20 mi14:19:033:51:269:113:30
10:09
-0:04
Finish
26.22 mi14:27:103:59:339:098:07
7:58
-2:11

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

7:27 /mi

Average Pace

9:09 /mi

Slowest Pace

14:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:50:01

46% of race

Time at Steady Pace

1:10:57

30% of race

Time at Slower Pace

58:35

24% of race

Average Pace: 9:08 /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 mi10:50:5723:207:3123:20
7:31
#12347
10K
6.21 mi11:14:0546:287:2923:08
7:27
#11941
15K
9.32 mi11:37:521:10:157:3223:47
7:39
#12298
20K
12.43 mi12:03:431:36:067:4425:51
8:19
#13644
Half
13.11 mi12:09:311:41:547:465:48
8:30
#14017
25K
15.53 mi12:30:512:03:147:5621:20
8:48
#15023
30K
18.64 mi13:00:382:33:018:1329:47
9:35
#16269
20M
20.00 mi13:19:452:52:088:3619:07
14:04
#18469
21M
21.00 mi13:32:063:04:298:4712:21
12:21
#19096
35K
21.75 mi13:39:423:12:058:507:36
10:10
#19277
23M
23.00 mi13:55:213:27:449:0215:39
12:30
#20075
24M
24.00 mi14:06:493:39:129:0811:28
11:28
#20444
40K
24.85 mi14:15:333:47:569:108:44
10:13
#20490
25.2M
25.20 mi14:19:033:51:269:113:30
10:09
#20475
Finish
26.22 mi14:27:103:59:339:098:07
7:58
#20265
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi123479334933413088(Top 46%)9556(Top 59%)9556(Top 401%)
10K6.21 mi3.10 mi11941+4069135+1999135+19911604(Top 41%)8964(Top 56%)8964(Top 376%)
15K9.32 mi3.11 mi12298-3579262-1279262-12713088(Top 46%)9556(Top 59%)9556(Top 401%)
20K12.43 mi3.11 mi13644-13469801-5399801-53917045(Top 60%)11203(Top 70%)11203(Top 470%)
Half13.11 mi0.68 mi14017-3739966-1659966-16519186(Top 68%)12134(Top 75%)12134(Top 509%)
25K15.53 mi2.42 mi15023-100610352-38610352-38618922(Top 67%)11934(Top 74%)11934(Top 500%)
30K18.64 mi3.11 mi16269-124610830-47810830-47820291(Top 71%)12420(Top 77%)12420(Top 521%)
20M20.00 mi1.36 mi18469-220011737-90711737-90727346(Top 96%)15542(Top 97%)15542(Top 651%)
21M21.00 mi1.00 mi19096-62711988-25111988-25124172(Top 85%)13990(Top 87%)13990(Top 586%)
35K21.75 mi0.75 mi19277-18112049-6112049-6122306(Top 79%)13054(Top 81%)13054(Top 547%)
23M23.00 mi1.25 mi20075-79812356-30712356-30725806(Top 91%)14738(Top 92%)14738(Top 618%)
24M24.00 mi1.00 mi20444-36912516-16012516-16024834(Top 87%)14217(Top 88%)14217(Top 596%)
40K24.85 mi0.85 mi20490-4612520-412520-421106(Top 74%)12335(Top 77%)12335(Top 517%)
25.2M25.20 mi0.35 mi20475+1512505+1512505+1517668(Top 62%)10691(Top 66%)10691(Top 448%)
Finish26.22 mi1.02 mi20265+21012393+11212393+11212655(Top 45%)8373(Top 52%)8373(Top 351%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 46%
×21story building
+97ft-345ft

Overall

13088

Males

9556

M45-49

9556

5K→10K

3.1 - 6.2 mi

Top 41%
×5story building
+79ft-138ft

Overall

11604

Males

8964

M45-49

8964

10K→15K

6.2 - 9.3 mi

Top 46%
×3story building
+67ft-78ft

Overall

13088

Males

9556

M45-49

9556

15K→20K

9.3 - 12.4 mi

Top 60%
×5story building
+106ft-86ft

Overall

17045

Males

11203

M45-49

11203

20K→Half

12.4 - 13.1 mi

Top 68%
×2story building
+19ft-37ft

Overall

19186

Males

12134

M45-49

12134

Half→25K

13.1 - 15.5 mi

Top 67%
×4story building
+66ft-88ft

Overall

18922

Males

11934

M45-49

11934

25K→30K

15.5 - 18.6 mi

Top 71%
×9story building
+181ft-148ft

Overall

20291

Males

12420

M45-49

12420

30K→20M

18.6 - 20.0 mi

Top 96%
×5story building
+64ft-50ft

Overall

27346

Males

15542

M45-49

15542

20M→21M

20.0 - 21.0 mi

Top 85%
×8story building
+106ft-24ft

Overall

24172

Males

13990

M45-49

13990

21M→35K

21.0 - 21.8 mi

Top 79%
×7story building
+17ft-86ft

Overall

22306

Males

13054

M45-49

13054

35K→23M

21.8 - 23.0 mi

Top 91%
×5story building
+23ft-63ft

Overall

25806

Males

14738

M45-49

14738

23M→24M

23.0 - 24.0 mi

Top 87%
×6story building
+12ft-82ft

Overall

24834

Males

14217

M45-49

14217

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

21106

Males

12335

M45-49

12335

40K→25.2M

24.9 - 25.2 mi

Top 62%
×1story
+13ft-16ft

Overall

17668

Males

10691

M45-49

10691

25.2M→Finish

25.2 - 26.2 mi

Top 45%
×2story building
+22ft-21ft

Overall

12655

Males

8373

M45-49

8373

Passing Analysis

Category:
Athletes Passed
1043
Passed By
8961
Net Change
-7918
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12347
5K → 10K513107+406#12347#11941
10K → 15K83440-357#11941#12298
15K → 20K311377-1346#12298#13644
20K → Half1374-373#13644#14017
Half → 25K321038-1006#14017#15023
25K → 30K401286-1246#15023#16269
30K → 20M62206-2200#16269#18469
20M → 21M14641-627#18469#19096
21M → 35K22203-181#19096#19277
35K → 23M8806-798#19277#20075
23M → 24M8377-369#20075#20444
24M → 40K4793-46#20444#20490
40K → 25.2M2712+15#20490#20475
25.2M → Finish2111+210#20475#20265
TOTALS10438961-7918
📊

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