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BOSTON MARATHON 2025

Don Sun

NH

Bib: 11572 M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 38%
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Top 40%
Division (M55-59)
#0 / 1648
Top 22%
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
7:31/mi
23:20
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
7:29/mi
46:36
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
7:25/mi
1:09:40
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
7:35/mi
1:33:13
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
7:40/mi
1:38:27
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
7:40/mi
1:57:03
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
7:59/mi
2:21:50
↑ 181↓ 1480.2%
138 ft elev
20M
8:09/mi
2:32:55
↑ 64↓ 500.2%
148 ft elev
21M
8:32/mi
2:41:27
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
7:44/mi
2:47:14
↑ 17↓ 861.7%
156 ft elev
23M
7:48/mi
2:57:00
↑ 23↓ 630.6%
116 ft elev
24M
7:33/mi
3:04:33
↓ 821.3%
34 ft elev
40K· 24.85 mi
7:47/mi
3:11:12
↓ 200.3%
20 ft elev
25.2M
8:45/mi
3:14:13
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
7:33/mi
3:21:55
↑ 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
1:38:277:31 /mi⚡ faster
2nd Half
1:43:287:54 /mi+5.1%
Positive split — 5.1% 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
23:207:313.11 mi23:20
7:31
-
10K
46:367:303.10 mi23:16
7:29
-0:02
15K
1:09:407:283.11 mi23:04
7:25
-0:04
20K
1:33:137:303.11 mi23:33
7:35
+0:10
Half(13.11 mi)
1:38:277:310.68 mi5:14
7:40
+0:05
25K
1:57:037:322.42 mi18:36
7:40
0:00
30K
2:21:507:373.11 mi24:47
7:59
+0:19
20M
2:32:557:391.36 mi11:05
8:09
+0:10
21M
2:41:277:411.00 mi8:32
8:32
+0:23
35K
2:47:147:410.75 mi5:47
7:44
-0:48
23M
2:57:007:421.25 mi9:46
7:48
+0:04
24M
3:04:337:411.00 mi7:33
7:33
-0:15
40K
3:11:127:420.85 mi6:39
7:47
+0:14
25.2M
3:14:137:420.35 mi3:01
8:45
+0:58
Finish(26.22 mi)
3:21:557:421.02 mi7:42
7:33
-1:12
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

7:25 /mi

Average Pace

7:42 /mi

Slowest Pace

8:45 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

3:10:22

94% of race

Time at Steady Pace

11:33

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:42 /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. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi12329931693161108586398639
10K3.10 mi12122+2079213+1039213+1031198891399139
15K3.11 mi11749+3739023+1909023+1901108586398639
20K3.11 mi11634+1158922+1018922+1011142186958695
Half(13.11 mi)0.68 mi11713-798960-388960-381308694859485
25K2.42 mi11633+808881+798881+791130685288528
30K3.11 mi11491+1428735+1468735+1461120582888288
20M1.36 mi11438+538666+698666+691148482738273
21M1.00 mi11354+848590+768590+761067177037703
35K0.75 mi11311+438542+488542+481027575097509
23M1.25 mi11093+2188401+1418401+141858764946494
24M1.00 mi10930+1638283+1188283+118805261476147
40K0.85 mi10808+1228190+938190+93860563126312
25.2M0.35 mi10789+198170+208170+201024870727072
Finish(26.22 mi)1.02 mi10702+878102+688102+68958667586758

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 39%
×21story building
+97ft-345ft

Overall

11085

Males

8639

M55-59

8639

5K→10K

3.1 - 6.2 mi

Top 42%
×5story building
+79ft-138ft

Overall

11988

Males

9139

M55-59

9139

10K→15K

6.2 - 9.3 mi

Top 39%
×3story building
+67ft-78ft

Overall

11085

Males

8639

M55-59

8639

15K→20K

9.3 - 12.4 mi

Top 40%
×5story building
+106ft-86ft

Overall

11421

Males

8695

M55-59

8695

20K→Half

12.4 - 13.1 mi

Top 46%
×2story building
+19ft-37ft

Overall

13086

Males

9485

M55-59

9485

Half→25K

13.1 - 15.5 mi

Top 40%
×4story building
+66ft-88ft

Overall

11306

Males

8528

M55-59

8528

25K→30K

15.5 - 18.6 mi

Top 39%
×9story building
+181ft-148ft

Overall

11205

Males

8288

M55-59

8288

30K→20M

18.6 - 20.0 mi

Top 40%
×5story building
+64ft-50ft

Overall

11484

Males

8273

M55-59

8273

20M→21M

20.0 - 21.0 mi

Top 38%
×8story building
+106ft-24ft

Overall

10671

Males

7703

M55-59

7703

21M→35K

21.0 - 21.8 mi

Top 36%
×7story building
+17ft-86ft

Overall

10275

Males

7509

M55-59

7509

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

8587

Males

6494

M55-59

6494

23M→24M

23.0 - 24.0 mi

Top 28%
×6story building
+12ft-82ft

Overall

8052

Males

6147

M55-59

6147

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

8605

Males

6312

M55-59

6312

40K→25.2M

24.9 - 25.2 mi

Top 36%
×1story
+13ft-16ft

Overall

10248

Males

7072

M55-59

7072

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2story building
+22ft-21ft

Overall

9586

Males

6758

M55-59

6758

Passing Analysis

Category:
Passed
2609
Passed By
982
Net Change
+1627
SegmentPassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12329
5K → 10K373166+207#12329#12122
10K → 15K41845+373#12122#11749
15K → 20K249134+115#11749#11634
20K → Half1190-79#11634#11713
Half → 25K199119+80#11713#11633
25K → 30K289147+142#11633#11491
30K → 20M14693+53#11491#11438
20M → 21M13248+84#11438#11354
21M → 35K7734+43#11354#11311
35K → 23M23719+218#11311#11093
23M → 24M17411+163#11093#10930
24M → 40K13816+122#10930#10808
40K → 25.2M3819+19#10808#10789
25.2M → Finish12841+87#10789#10702
TOTALS2609982+1627

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