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BOSTON MARATHON 2025

Kenneth Gildersleeve

Bib: 1083•M

TX

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0:00
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Overall
#0 / 28404
Top 11%
Gender (Male)
#0 / 16105
Top 19%
Division (M18-39)
#0 / 5642
Top 41%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
18:13
Rank: #731
Start → 5K
18:13 | 5:52/mi
10K· 6.21 mi
36:39
Rank: #807 (-76)
5K → 10K
18:26 | 5:56/mi
15K· 9.32 mi
55:21
Rank: #892 (-85)
10K → 15K
18:42 | 6:01/mi
20K· 12.43 mi
1:14:50
Rank: #1053 (-161)
15K → 20K
19:29 | 6:16/mi
Half· 13.11 mi
1:19:04
Rank: #1086 (-33)
20K → Half
4:14 | 6:12/mi
25K· 15.53 mi
1:38:30
Rank: #2402 (-1316)
Half → 25K
19:26 | 8:01/mi
30K· 18.64 mi
2:00:01
Rank: #2653 (-251)
25K → 30K
21:31 | 6:56/mi
20M
2:09:42
Rank: #2788 (-135)
30K → 20M
9:41 | 7:08/mi
21M
2:17:10
Rank: #2853 (-65)
20M → 21M
7:28 | 7:28/mi
35K· 21.75 mi
2:22:24
Rank: #2888 (-35)
21M → 35K
5:14 | 7:00/mi
23M
2:31:58
Rank: #3083 (-195)
35K → 23M
9:34 | 7:38/mi
24M
2:38:59
Rank: #3127 (-44)
23M → 24M
7:01 | 7:01/mi
40K· 24.85 mi
2:45:03
Rank: #3131 (-4)
24M → 40K
6:04 | 7:06/mi
25.2M
2:47:48
Rank: #3150 (-19)
40K → 25.2M
2:45 | 7:58/mi
Finish· 26.22 mi
2:54:42
Rank: #3172 (-22)
25.2M → Finish
6:54 | 6:46/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:19:04
Pace6:02 /mi
2nd Half
Distance13.11 mi
Time1:35:38
Pace7:18 /mi
📊Positive Split: 21.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:18:2318:135:5218:13
5:52
-
10K
6.21 mi10:36:4936:395:5418:26
5:56
+0:04
15K
9.32 mi10:55:3155:215:5618:42
6:01
+0:05
20K
12.43 mi11:15:001:14:506:0119:29
6:16
+0:15
Half
13.11 mi11:19:141:19:046:024:14
6:12
-0:04
25K
15.53 mi11:38:401:38:306:2019:26
8:01
+1:49
30K
18.64 mi12:00:112:00:016:2621:31
6:56
-1:05
20M
20.00 mi12:09:522:09:426:299:41
7:08
+0:12
21M
21.00 mi12:17:202:17:106:327:28
7:28
+0:20
35K
21.75 mi12:22:342:22:246:335:14
7:00
-0:28
23M
23.00 mi12:32:082:31:586:369:34
7:38
+0:38
24M
24.00 mi12:39:092:38:596:377:01
7:01
-0:37
40K
24.85 mi12:45:132:45:036:386:04
7:06
+0:05
25.2M
25.20 mi12:47:582:47:486:402:45
7:58
+0:52
Finish
26.22 mi12:54:522:54:426:406:54
6:46
-1:12

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

5:52 /mi

Average Pace

6:40 /mi

Slowest Pace

8:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:19:04

45% of race

Time at Steady Pace

56:25

32% of race

Time at Slower Pace

39:13

22% of race

Average Pace: 6:40 /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 mi10:18:2318:135:5218:13
5:52
#731
10K
6.21 mi10:36:4936:395:5418:26
5:56
#807
15K
9.32 mi10:55:3155:215:5618:42
6:01
#892
20K
12.43 mi11:15:001:14:506:0119:29
6:16
#1053
Half
13.11 mi11:19:141:19:046:024:14
6:12
#1086
25K
15.53 mi11:38:401:38:306:2019:26
8:01
#2402
30K
18.64 mi12:00:112:00:016:2621:31
6:56
#2653
20M
20.00 mi12:09:522:09:426:299:41
7:08
#2788
21M
21.00 mi12:17:202:17:106:327:28
7:28
#2853
35K
21.75 mi12:22:342:22:246:335:14
7:00
#2888
23M
23.00 mi12:32:082:31:586:369:34
7:38
#3083
24M
24.00 mi12:39:092:38:596:377:01
7:01
#3127
40K
24.85 mi12:45:132:45:036:386:04
7:06
#3131
25.2M
25.20 mi12:47:582:47:486:402:45
7:58
#3150
Finish
26.22 mi12:54:522:54:426:406:54
6:46
#3172
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi7316806801101(Top 4%)1042(Top 6%)1042(Top 18%)
10K6.21 mi3.10 mi807-76755-75755-75921(Top 3%)867(Top 5%)867(Top 15%)
15K9.32 mi3.11 mi892-85838-83838-831101(Top 4%)1042(Top 6%)1042(Top 18%)
20K12.43 mi3.11 mi1053-161993-155993-1551894(Top 7%)1804(Top 11%)1804(Top 32%)
Half13.11 mi0.68 mi1086-331026-331026-332011(Top 7%)1920(Top 12%)1920(Top 34%)
25K15.53 mi2.42 mi2402-13162292-12662292-126613984(Top 49%)9738(Top 60%)9738(Top 173%)
30K18.64 mi3.11 mi2653-2512532-2402532-2404234(Top 15%)3887(Top 24%)3887(Top 69%)
20M20.00 mi1.36 mi2788-1352655-1232655-1234782(Top 17%)4308(Top 27%)4308(Top 76%)
21M21.00 mi1.00 mi2853-652715-602715-604412(Top 16%)3930(Top 24%)3930(Top 70%)
35K21.75 mi0.75 mi2888-352742-272742-275257(Top 19%)4539(Top 28%)4539(Top 80%)
23M23.00 mi1.25 mi3083-1952916-1742916-1747476(Top 26%)5845(Top 36%)5845(Top 104%)
24M24.00 mi1.00 mi3127-442952-362952-364691(Top 17%)4031(Top 25%)4031(Top 71%)
40K24.85 mi0.85 mi3131-42954-22954-24407(Top 16%)3775(Top 23%)3775(Top 67%)
25.2M25.20 mi0.35 mi3150-192965-112965-115715(Top 20%)4540(Top 28%)4540(Top 80%)
Finish26.22 mi1.02 mi3172-222982-172982-174298(Top 15%)3642(Top 23%)3642(Top 65%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 4%
×21stories
+97ft-345ft

Overall

1101

Males

1042

M18-39

1042

5K→10K

3.1 - 6.2 mi

Top 3%
×5stories
+79ft-138ft

Overall

921

Males

867

M18-39

867

10K→15K

6.2 - 9.3 mi

Top 4%
×3stories
+67ft-78ft

Overall

1101

Males

1042

M18-39

1042

15K→20K

9.3 - 12.4 mi

Top 7%
×5stories
+106ft-86ft

Overall

1894

Males

1804

M18-39

1804

20K→Half

12.4 - 13.1 mi

Top 7%
×2stories
+19ft-37ft

Overall

2011

Males

1920

M18-39

1920

Half→25K

13.1 - 15.5 mi

Top 49%
×4stories
+66ft-88ft

Overall

13984

Males

9738

M18-39

9738

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

4234

Males

3887

M18-39

3887

30K→20M

18.6 - 20.0 mi

Top 17%
×5stories
+64ft-50ft

Overall

4782

Males

4308

M18-39

4308

20M→21M

20.0 - 21.0 mi

Top 16%
×8stories
+106ft-24ft

Overall

4412

Males

3930

M18-39

3930

21M→35K

21.0 - 21.8 mi

Top 19%
×7stories
+17ft-86ft

Overall

5257

Males

4539

M18-39

4539

35K→23M

21.8 - 23.0 mi

Top 26%
×5stories
+23ft-63ft

Overall

7476

Males

5845

M18-39

5845

23M→24M

23.0 - 24.0 mi

Top 17%
×6stories
+12ft-82ft

Overall

4691

Males

4031

M18-39

4031

24M→40K

24.0 - 24.9 mi

Top 16%
×1story
+6ft-20ft

Overall

4407

Males

3775

M18-39

3775

40K→25.2M

24.9 - 25.2 mi

Top 20%
×1story
+13ft-16ft

Overall

5715

Males

4540

M18-39

4540

25.2M→Finish

25.2 - 26.2 mi

Top 15%
×2stories
+22ft-21ft

Overall

4298

Males

3642

M18-39

3642

Passing Analysis

Category:
Athletes Passed
290
Passed By
2731
Net Change
-2441
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#731
5K → 10K1692-76#731#807
10K → 15K691-85#807#892
15K → 20K6167-161#892#1053
20K → Half235-33#1053#1086
Half → 25K01316-1316#1086#2402
25K → 30K35286-251#2402#2653
30K → 20M23158-135#2653#2788
20M → 21M3297-65#2788#2853
21M → 35K2156-35#2853#2888
35K → 23M20215-195#2888#3083
23M → 24M3579-44#3083#3127
24M → 40K3741-4#3127#3131
40K → 25.2M1938-19#3131#3150
25.2M → Finish3860-22#3150#3172
TOTALS2902731-2441
📊

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