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BOSTON MARATHON 2025

Guy Van Lantschoot

Bib: 8945•M

TX

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 33%
Gender (Male)
#0 / 16105
Top 46%
Masters (Masters Men)
#0 / 10463
Top 34%
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
20:31
Rank: #4644
Start → 5K
20:31 | 6:36/mi
10K· 6.21 mi
41:17
Rank: #4874 (-230)
5K → 10K
20:46 | 6:41/mi
15K· 9.32 mi
1:02:13
Rank: #5014 (-140)
10K → 15K
20:56 | 6:44/mi
20K· 12.43 mi
1:23:44
Rank: #5350 (-336)
15K → 20K
21:31 | 6:56/mi
Half· 13.11 mi
1:28:30
Rank: #5494 (-144)
20K → Half
4:46 | 6:59/mi
25K· 15.53 mi
1:46:36
Rank: #6278 (-784)
Half → 25K
18:06 | 7:28/mi
30K· 18.64 mi
2:11:33
Rank: #7046 (-768)
25K → 30K
24:57 | 8:02/mi
20M
2:22:29
Rank: #7222 (-176)
30K → 20M
10:56 | 8:03/mi
21M
2:31:13
Rank: #7388 (-166)
20M → 21M
8:44 | 8:44/mi
35K· 21.75 mi
2:37:29
Rank: #7623 (-235)
21M → 35K
6:16 | 8:23/mi
23M
2:48:52
Rank: #8161 (-538)
35K → 23M
11:23 | 9:05/mi
24M
2:57:07
Rank: #8327 (-166)
23M → 24M
8:15 | 8:15/mi
40K· 24.85 mi
3:04:51
Rank: #8690 (-363)
24M → 40K
7:44 | 9:03/mi
25.2M
3:08:04
Rank: #8779 (-89)
40K → 25.2M
3:13 | 9:20/mi
Finish· 26.22 mi
3:17:04
Rank: #9231 (-452)
25.2M → Finish
9:00 | 8:50/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:30
Pace6:45 /mi
2nd Half
Distance13.11 mi
Time1:48:34
Pace8:17 /mi
📊Positive Split: 22.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:45:5720:316:3620:31
6:36
-
10K
6.21 mi11:06:4341:176:3920:46
6:41
+0:05
15K
9.32 mi11:27:391:02:136:4120:56
6:44
+0:03
20K
12.43 mi11:49:101:23:446:4421:31
6:56
+0:12
Half
13.11 mi11:53:561:28:306:454:46
6:59
+0:03
25K
15.53 mi12:12:021:46:366:5218:06
7:28
+0:29
30K
18.64 mi12:36:592:11:337:0324:57
8:02
+0:34
20M
20.00 mi12:47:552:22:297:0710:56
8:03
+0:01
21M
21.00 mi12:56:392:31:137:128:44
8:44
+0:41
35K
21.75 mi13:02:552:37:297:146:16
8:23
-0:21
23M
23.00 mi13:14:182:48:527:2111:23
9:05
+0:42
24M
24.00 mi13:22:332:57:077:238:15
8:15
-0:50
40K
24.85 mi13:30:173:04:517:267:44
9:03
+0:48
25.2M
25.20 mi13:33:303:08:047:283:13
9:20
+0:17
Finish
26.22 mi13:42:303:17:047:319:00
8:50
-0:30

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

6:36 /mi

Average Pace

7:31 /mi

Slowest Pace

9:20 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:46:36

54% of race

Time at Steady Pace

50:24

26% of race

Time at Slower Pace

40:04

20% of race

Average Pace: 7:31 /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 mi10:45:5720:316:3620:31
6:36
#4644
10K
6.21 mi11:06:4341:176:3920:46
6:41
#4874
15K
9.32 mi11:27:391:02:136:4120:56
6:44
#5014
20K
12.43 mi11:49:101:23:446:4421:31
6:56
#5350
Half
13.11 mi11:53:561:28:306:454:46
6:59
#5494
25K
15.53 mi12:12:021:46:366:5218:06
7:28
#6278
30K
18.64 mi12:36:592:11:337:0324:57
8:02
#7046
20M
20.00 mi12:47:552:22:297:0710:56
8:03
#7222
21M
21.00 mi12:56:392:31:137:128:44
8:44
#7388
35K
21.75 mi13:02:552:37:297:146:16
8:23
#7623
23M
23.00 mi13:14:182:48:527:2111:23
9:05
#8161
24M
24.00 mi13:22:332:57:077:238:15
8:15
#8327
40K
24.85 mi13:30:173:04:517:267:44
9:03
#8690
25.2M
25.20 mi13:33:303:08:047:283:13
9:20
#8779
Finish
26.22 mi13:42:303:17:047:319:00
8:50
#9231
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi4644435643565468(Top 19%)5027(Top 31%)5027(Top 224%)
10K6.21 mi3.10 mi4874-2304555-1994555-1995221(Top 18%)4850(Top 30%)4850(Top 216%)
15K9.32 mi3.11 mi5014-1404674-1194674-1195468(Top 19%)5027(Top 31%)5027(Top 224%)
20K12.43 mi3.11 mi5350-3364950-2764950-2766393(Top 23%)5739(Top 36%)5739(Top 255%)
Half13.11 mi0.68 mi5494-1445064-1145064-1147494(Top 26%)6584(Top 41%)6584(Top 293%)
25K15.53 mi2.42 mi6278-7845683-6195683-6199661(Top 34%)7672(Top 48%)7672(Top 341%)
30K18.64 mi3.11 mi7046-7686244-5616244-56111597(Top 41%)8471(Top 53%)8471(Top 377%)
20M20.00 mi1.36 mi7222-1766336-926336-9210711(Top 38%)7888(Top 49%)7888(Top 351%)
21M21.00 mi1.00 mi7388-1666416-806416-8011844(Top 42%)8292(Top 51%)8292(Top 369%)
35K21.75 mi0.75 mi7623-2356549-1336549-13314683(Top 52%)9565(Top 59%)9565(Top 426%)
23M23.00 mi1.25 mi8161-5386842-2936842-29316745(Top 59%)10394(Top 65%)10394(Top 463%)
24M24.00 mi1.00 mi8327-1666913-716913-7112877(Top 45%)8581(Top 53%)8581(Top 382%)
40K24.85 mi0.85 mi8690-3637081-1687081-16816525(Top 58%)10146(Top 63%)10146(Top 452%)
25.2M25.20 mi0.35 mi8779-897117-367117-3613511(Top 48%)8681(Top 54%)8681(Top 386%)
Finish26.22 mi1.02 mi9231-4527340-2237340-22318177(Top 64%)10950(Top 68%)10950(Top 487%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 19%
×21stories
+97ft-345ft

Overall

5468

Males

5027

M40-44

5027

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

5221

Males

4850

M40-44

4850

10K→15K

6.2 - 9.3 mi

Top 19%
×3stories
+67ft-78ft

Overall

5468

Males

5027

M40-44

5027

15K→20K

9.3 - 12.4 mi

Top 23%
×5stories
+106ft-86ft

Overall

6393

Males

5739

M40-44

5739

20K→Half

12.4 - 13.1 mi

Top 26%
×2stories
+19ft-37ft

Overall

7494

Males

6584

M40-44

6584

Half→25K

13.1 - 15.5 mi

Top 34%
×4stories
+66ft-88ft

Overall

9661

Males

7672

M40-44

7672

25K→30K

15.5 - 18.6 mi

Top 41%
×9stories
+181ft-148ft

Overall

11597

Males

8471

M40-44

8471

30K→20M

18.6 - 20.0 mi

Top 38%
×5stories
+64ft-50ft

Overall

10711

Males

7888

M40-44

7888

20M→21M

20.0 - 21.0 mi

Top 42%
×8stories
+106ft-24ft

Overall

11844

Males

8292

M40-44

8292

21M→35K

21.0 - 21.8 mi

Top 52%
×7stories
+17ft-86ft

Overall

14683

Males

9565

M40-44

9565

35K→23M

21.8 - 23.0 mi

Top 59%
×5stories
+23ft-63ft

Overall

16745

Males

10394

M40-44

10394

23M→24M

23.0 - 24.0 mi

Top 45%
×6stories
+12ft-82ft

Overall

12877

Males

8581

M40-44

8581

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

16525

Males

10146

M40-44

10146

40K→25.2M

24.9 - 25.2 mi

Top 48%
×1story
+13ft-16ft

Overall

13511

Males

8681

M40-44

8681

25.2M→Finish

25.2 - 26.2 mi

Top 64%
×2stories
+22ft-21ft

Overall

18177

Males

10950

M40-44

10950

Passing Analysis

Category:
Athletes Passed
493
Passed By
5080
Net Change
-4587
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4644
5K → 10K87317-230#4644#4874
10K → 15K70210-140#4874#5014
15K → 20K48384-336#5014#5350
20K → Half6150-144#5350#5494
Half → 25K21805-784#5494#6278
25K → 30K41809-768#6278#7046
30K → 20M57233-176#7046#7222
20M → 21M38204-166#7222#7388
21M → 35K14249-235#7388#7623
35K → 23M22560-538#7623#8161
23M → 24M40206-166#8161#8327
24M → 40K20383-363#8327#8690
40K → 25.2M16105-89#8690#8779
25.2M → Finish13465-452#8779#9231
TOTALS4935080-4587
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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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