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BOSTON MARATHON 2025

Gregory Madendorp

Bib: 2383•M

CO

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 23%
Gender (Male)
#0 / 16105
Top 35%
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:56
Rank: #5789
Start → 5K
20:56 | 6:44/mi
10K· 6.21 mi
41:29
Rank: #5157 (+632)
5K → 10K
20:33 | 6:37/mi
15K· 9.32 mi
1:01:58
Rank: #4787 (+370)
10K → 15K
20:29 | 6:36/mi
20K· 12.43 mi
1:22:42
Rank: #4592 (+195)
15K → 20K
20:44 | 6:40/mi
Half· 13.11 mi
1:27:10
Rank: #4559 (+33)
20K → Half
4:28 | 6:33/mi
25K· 15.53 mi
1:43:26
Rank: #4445 (+114)
Half → 25K
16:16 | 6:43/mi
30K· 18.64 mi
2:04:50
Rank: #4296 (+149)
25K → 30K
21:24 | 6:53/mi
20M
2:14:19
Rank: #4232 (+64)
30K → 20M
9:29 | 6:59/mi
21M
2:21:40
Rank: #4182 (+50)
20M → 21M
7:21 | 7:21/mi
35K· 21.75 mi
2:26:56
Rank: #4208 (-26)
21M → 35K
5:16 | 7:02/mi
23M
2:38:40
Rank: #5187 (-979)
35K → 23M
11:44 | 9:22/mi
24M
2:48:08
Rank: #5732 (-545)
23M → 24M
9:28 | 9:28/mi
40K· 24.85 mi
2:55:47
Rank: #6016 (-284)
24M → 40K
7:39 | 8:57/mi
25.2M
3:00:08
Rank: #6387 (-371)
40K → 25.2M
4:21 | 12:37/mi
Finish· 26.22 mi
3:07:54
Rank: #6461 (-74)
25.2M → Finish
7:46 | 7:37/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:27:10
Pace6:39 /mi
2nd Half
Distance13.11 mi
Time1:40:44
Pace7:41 /mi
📊Positive Split: 15.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:4420:566:4420:56
6:44
-
10K
6.21 mi10:43:1741:296:4120:33
6:37
-0:07
15K
9.32 mi11:03:461:01:586:3920:29
6:36
-0:01
20K
12.43 mi11:24:301:22:426:3920:44
6:40
+0:04
Half
13.11 mi11:28:581:27:106:394:28
6:33
-0:07
25K
15.53 mi11:45:141:43:266:4016:16
6:43
+0:10
30K
18.64 mi12:06:382:04:506:4221:24
6:53
+0:10
20M
20.00 mi12:16:072:14:196:439:29
6:59
+0:06
21M
21.00 mi12:23:282:21:406:457:21
7:21
+0:22
35K
21.75 mi12:28:442:26:566:455:16
7:02
-0:19
23M
23.00 mi12:40:282:38:406:5411:44
9:22
+2:20
24M
24.00 mi12:49:562:48:087:009:28
9:28
+0:06
40K
24.85 mi12:57:352:55:477:047:39
8:57
-0:31
25.2M
25.20 mi13:01:563:00:087:094:21
12:37
+3:40
Finish
26.22 mi13:09:423:07:547:107:46
7:37
-5:00

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

6:33 /mi

Average Pace

7:10 /mi

Slowest Pace

12:37 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

2:34:42

82% of race

Time at Slower Pace

33:12

18% of race

Average Pace: 7:10 /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 mi10:22:4420:566:4420:56
6:44
#5789
10K
6.21 mi10:43:1741:296:4120:33
6:37
#5157
15K
9.32 mi11:03:461:01:586:3920:29
6:36
#4787
20K
12.43 mi11:24:301:22:426:3920:44
6:40
#4592
Half
13.11 mi11:28:581:27:106:394:28
6:33
#4559
25K
15.53 mi11:45:141:43:266:4016:16
6:43
#4445
30K
18.64 mi12:06:382:04:506:4221:24
6:53
#4296
20M
20.00 mi12:16:072:14:196:439:29
6:59
#4232
21M
21.00 mi12:23:282:21:406:457:21
7:21
#4182
35K
21.75 mi12:28:442:26:566:455:16
7:02
#4208
23M
23.00 mi12:40:282:38:406:5411:44
9:22
#5187
24M
24.00 mi12:49:562:48:087:009:28
9:28
#5732
40K
24.85 mi12:57:352:55:477:047:39
8:57
#6016
25.2M
25.20 mi13:01:563:00:087:094:21
12:37
#6387
Finish
26.22 mi13:09:423:07:547:107:46
7:37
#6461
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5789534153414185(Top 15%)3937(Top 24%)3937(Top 70%)
10K6.21 mi3.10 mi5157+6324800+5414800+5414594(Top 16%)4304(Top 27%)4304(Top 76%)
15K9.32 mi3.11 mi4787+3704477+3234477+3234185(Top 15%)3937(Top 24%)3937(Top 70%)
20K12.43 mi3.11 mi4592+1954296+1814296+1814216(Top 15%)3953(Top 25%)3953(Top 70%)
Half13.11 mi0.68 mi4559+334266+304266+304061(Top 14%)3825(Top 24%)3825(Top 68%)
25K15.53 mi2.42 mi4445+1144162+1044162+1044226(Top 15%)3928(Top 24%)3928(Top 70%)
30K18.64 mi3.11 mi4296+1494019+1434019+1434014(Top 14%)3700(Top 23%)3700(Top 66%)
20M20.00 mi1.36 mi4232+643959+603959+604008(Top 14%)3676(Top 23%)3676(Top 65%)
21M21.00 mi1.00 mi4182+503904+553904+553890(Top 14%)3540(Top 22%)3540(Top 63%)
35K21.75 mi0.75 mi4208-263920-163920-165645(Top 20%)4833(Top 30%)4833(Top 86%)
23M23.00 mi1.25 mi5187-9794740-8204740-82018085(Top 64%)11007(Top 68%)11007(Top 195%)
24M24.00 mi1.00 mi5732-5455159-4195159-41919472(Top 69%)11606(Top 72%)11606(Top 206%)
40K24.85 mi0.85 mi6016-2845361-2025361-20215955(Top 56%)9881(Top 61%)9881(Top 175%)
25.2M25.20 mi0.35 mi6387-3715613-2525613-25224384(Top 86%)13944(Top 87%)13944(Top 247%)
Finish26.22 mi1.02 mi6461-745633-205633-2010074(Top 35%)7011(Top 44%)7011(Top 124%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 15%
×21stories
+97ft-345ft

Overall

4185

Males

3937

M18-39

3937

5K→10K

3.1 - 6.2 mi

Top 16%
×5stories
+79ft-138ft

Overall

4594

Males

4304

M18-39

4304

10K→15K

6.2 - 9.3 mi

Top 15%
×3stories
+67ft-78ft

Overall

4185

Males

3937

M18-39

3937

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

4216

Males

3953

M18-39

3953

20K→Half

12.4 - 13.1 mi

Top 14%
×2stories
+19ft-37ft

Overall

4061

Males

3825

M18-39

3825

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

4226

Males

3928

M18-39

3928

25K→30K

15.5 - 18.6 mi

Top 14%
×9stories
+181ft-148ft

Overall

4014

Males

3700

M18-39

3700

30K→20M

18.6 - 20.0 mi

Top 14%
×5stories
+64ft-50ft

Overall

4008

Males

3676

M18-39

3676

20M→21M

20.0 - 21.0 mi

Top 14%
×8stories
+106ft-24ft

Overall

3890

Males

3540

M18-39

3540

21M→35K

21.0 - 21.8 mi

Top 20%
×7stories
+17ft-86ft

Overall

5645

Males

4833

M18-39

4833

35K→23M

21.8 - 23.0 mi

Top 64%
×5stories
+23ft-63ft

Overall

18085

Males

11007

M18-39

11007

23M→24M

23.0 - 24.0 mi

Top 69%
×6stories
+12ft-82ft

Overall

19472

Males

11606

M18-39

11606

24M→40K

24.0 - 24.9 mi

Top 56%
×1story
+6ft-20ft

Overall

15955

Males

9881

M18-39

9881

40K→25.2M

24.9 - 25.2 mi

Top 86%
×1story
+13ft-16ft

Overall

24384

Males

13944

M18-39

13944

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2stories
+22ft-21ft

Overall

10074

Males

7011

M18-39

7011

Passing Analysis

Category:
Athletes Passed
1949
Passed By
2621
Net Change
-672
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5789
5K → 10K65422+632#5789#5157
10K → 15K38212+370#5157#4787
15K → 20K22732+195#4787#4592
20K → Half385+33#4592#4559
Half → 25K15541+114#4559#4445
25K → 30K22071+149#4445#4296
30K → 20M9834+64#4296#4232
20M → 21M8737+50#4232#4182
21M → 35K2349-26#4182#4208
35K → 23M10989-979#4208#5187
23M → 24M3548-545#5187#5732
24M → 40K10294-284#5732#6016
40K → 25.2M0371-371#6016#6387
25.2M → Finish42116-74#6387#6461
TOTALS19492621-672
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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