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BOSTON MARATHON 2025

Stijn Claes

Bib: 4984•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 (M45-49)
#0 / 2386
Top 18%
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
6:31/mi
20:14
↑ 97↓ 3451.5%
10K· 6.21 mi
6:38/mi
40:52
↑ 79↓ 1380.4%
15K· 9.32 mi
6:46/mi
1:01:52
↑ 67↓ 78
20K· 12.43 mi
6:53/mi
1:23:15
↑ 106↓ 860.1%
Half· 13.11 mi
6:45/mi
1:27:51
↑ 19↓ 370.5%
25K· 15.53 mi
6:58/mi
1:44:44
↑ 66↓ 880.2%
30K· 18.64 mi
7:05/mi
2:06:44
↑ 181↓ 1480.2%
20M
7:05/mi
2:16:22
↑ 64↓ 500.2%
21M
7:35/mi
2:23:57
↑ 106↓ 241.6%
35K· 21.75 mi
6:53/mi
2:29:06
↑ 17↓ 861.7%
23M
7:13/mi
2:38:08
↑ 23↓ 630.6%
24M
7:02/mi
2:45:10
↓ 821.3%
40K· 24.85 mi
7:17/mi
2:51:24
↓ 200.3%
25.2M
7:58/mi
2:54:09
↑ 13↓ 160.2%
Finish· 26.22 mi
6:55/mi
3:01:12
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:51
Pace6:42 /mi
2nd Half
Distance13.11 mi
Time1:33:21
Pace7:07 /mi
📊Positive Split: 6.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:0720:146:3120:14
6:31
-
10K
6.21 mi10:44:4540:526:3520:38
6:38
+0:07
15K
9.32 mi11:05:451:01:526:3821:00
6:46
+0:08
20K
12.43 mi11:27:081:23:156:4221:23
6:53
+0:07
Half
13.11 mi11:31:441:27:516:424:36
6:45
-0:08
25K
15.53 mi11:48:371:44:446:4516:53
6:58
+0:13
30K
18.64 mi12:10:372:06:446:4822:00
7:05
+0:07
20M
20.00 mi12:20:152:16:226:499:38
7:05
0:00
21M
21.00 mi12:27:502:23:576:517:35
7:35
+0:30
35K
21.75 mi12:32:592:29:066:515:09
6:53
-0:42
23M
23.00 mi12:42:012:38:086:539:02
7:13
+0:20
24M
24.00 mi12:49:032:45:106:537:02
7:02
-0:11
40K
24.85 mi12:55:172:51:246:546:14
7:17
+0:15
25.2M
25.20 mi12:58:022:54:096:552:45
7:58
+0:41
Finish
26.22 mi13:05:053:01:126:557:03
6:55
-1:03

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

6:31 /mi

Average Pace

6:55 /mi

Slowest Pace

7:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:06:28

37% of race

Time at Steady Pace

1:29:08

49% of race

Time at Slower Pace

25:36

14% of race

Average Pace: 6:55 /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 mi10:24:0720:146:3120:14
6:31
#3918
10K
6.21 mi10:44:4540:526:3520:38
6:38
#4320
15K
9.32 mi11:05:451:01:526:3821:00
6:46
#4687
20K
12.43 mi11:27:081:23:156:4221:23
6:53
#4981
Half
13.11 mi11:31:441:27:516:424:36
6:45
#5010
25K
15.53 mi11:48:371:44:446:4516:53
6:58
#5183
30K
18.64 mi12:10:372:06:446:4822:00
7:05
#5137
20M
20.00 mi12:20:152:16:226:499:38
7:05
#5084
21M
21.00 mi12:27:502:23:576:517:35
7:35
#5052
35K
21.75 mi12:32:592:29:066:515:09
6:53
#5020
23M
23.00 mi12:42:012:38:086:539:02
7:13
#5006
24M
24.00 mi12:49:032:45:106:537:02
7:02
#4991
40K
24.85 mi12:55:172:51:246:546:14
7:17
#4992
25.2M
25.20 mi12:58:022:54:096:552:45
7:58
#4987
Finish
26.22 mi13:05:053:01:126:557:03
6:55
#4955
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi3918370837085669(Top 20%)5173(Top 32%)5173(Top 217%)
10K6.21 mi3.10 mi4320-4024061-3534061-3534792(Top 17%)4482(Top 28%)4482(Top 188%)
15K9.32 mi3.11 mi4687-3674386-3254386-3255669(Top 20%)5173(Top 32%)5173(Top 217%)
20K12.43 mi3.11 mi4981-2944637-2514637-2516044(Top 21%)5467(Top 34%)5467(Top 229%)
Half13.11 mi0.68 mi5010-294660-234660-235574(Top 20%)5094(Top 32%)5094(Top 213%)
25K15.53 mi2.42 mi5183-1734800-1404800-1406051(Top 21%)5436(Top 34%)5436(Top 228%)
30K18.64 mi3.11 mi5137+464727+734727+735195(Top 18%)4696(Top 29%)4696(Top 197%)
20M20.00 mi1.36 mi5084+534678+494678+494606(Top 16%)4176(Top 26%)4176(Top 175%)
21M21.00 mi1.00 mi5052+324644+344644+345005(Top 18%)4372(Top 27%)4372(Top 183%)
35K21.75 mi0.75 mi5020+324611+334611+334588(Top 16%)4066(Top 25%)4066(Top 170%)
23M23.00 mi1.25 mi5006+144586+254586+254947(Top 17%)4273(Top 27%)4273(Top 179%)
24M24.00 mi1.00 mi4991+154563+234563+234802(Top 17%)4116(Top 26%)4116(Top 173%)
40K24.85 mi0.85 mi4992-14557+64557+65565(Top 20%)4584(Top 28%)4584(Top 192%)
25.2M25.20 mi0.35 mi4987+54549+84549+85740(Top 20%)4565(Top 28%)4565(Top 191%)
Finish26.22 mi1.02 mi4955+324513+364513+365183(Top 18%)4231(Top 26%)4231(Top 177%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 20%
×21story building
+97ft-345ft

Overall

5669

Males

5173

M45-49

5173

5K→10K

3.1 - 6.2 mi

Top 17%
×5story building
+79ft-138ft

Overall

4792

Males

4482

M45-49

4482

10K→15K

6.2 - 9.3 mi

Top 20%
×3story building
+67ft-78ft

Overall

5669

Males

5173

M45-49

5173

15K→20K

9.3 - 12.4 mi

Top 21%
×5story building
+106ft-86ft

Overall

6044

Males

5467

M45-49

5467

20K→Half

12.4 - 13.1 mi

Top 20%
×2story building
+19ft-37ft

Overall

5574

Males

5094

M45-49

5094

Half→25K

13.1 - 15.5 mi

Top 21%
×4story building
+66ft-88ft

Overall

6051

Males

5436

M45-49

5436

25K→30K

15.5 - 18.6 mi

Top 18%
×9story building
+181ft-148ft

Overall

5195

Males

4696

M45-49

4696

30K→20M

18.6 - 20.0 mi

Top 16%
×5story building
+64ft-50ft

Overall

4606

Males

4176

M45-49

4176

20M→21M

20.0 - 21.0 mi

Top 18%
×8story building
+106ft-24ft

Overall

5005

Males

4372

M45-49

4372

21M→35K

21.0 - 21.8 mi

Top 16%
×7story building
+17ft-86ft

Overall

4588

Males

4066

M45-49

4066

35K→23M

21.8 - 23.0 mi

Top 17%
×5story building
+23ft-63ft

Overall

4947

Males

4273

M45-49

4273

23M→24M

23.0 - 24.0 mi

Top 17%
×6story building
+12ft-82ft

Overall

4802

Males

4116

M45-49

4116

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5565

Males

4584

M45-49

4584

40K→25.2M

24.9 - 25.2 mi

Top 20%
×1story
+13ft-16ft

Overall

5740

Males

4565

M45-49

4565

25.2M→Finish

25.2 - 26.2 mi

Top 18%
×2story building
+22ft-21ft

Overall

5183

Males

4231

M45-49

4231

Passing Analysis

Category:
Athletes Passed
917
Passed By
1954
Net Change
-1037
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3918
5K → 10K34436-402#3918#4320
10K → 15K27394-367#4320#4687
15K → 20K55349-294#4687#4981
20K → Half1342-29#4981#5010
Half → 25K58231-173#5010#5183
25K → 30K183137+46#5183#5137
30K → 20M9542+53#5137#5084
20M → 21M8856+32#5084#5052
21M → 35K6937+32#5052#5020
35K → 23M9379+14#5020#5006
23M → 24M6954+15#5006#4991
24M → 40K4546-1#4991#4992
40K → 25.2M2924+5#4992#4987
25.2M → Finish5927+32#4987#4955
TOTALS9171954-1037
📊

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