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BOSTON MARATHON 2025

Klaus Ewert

Bib: 4302•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 12%
Gender (Male)
#0 / 16105
Top 20%
Division (M18-39)
#0 / 5642
Top 44%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:16
Rank: #1886
Start → 5K
19:16 | 6:12/mi
10K· 6.21 mi
38:55
Rank: #2207 (-321)
5K → 10K
19:39 | 6:19/mi
15K· 9.32 mi
58:47
Rank: #2440 (-233)
10K → 15K
19:52 | 6:24/mi
20K· 12.43 mi
1:18:46
Rank: #2479 (-39)
15K → 20K
19:59 | 6:26/mi
Half· 13.11 mi
1:23:09
Rank: #2518 (-39)
20K → Half
4:23 | 6:25/mi
25K· 15.53 mi
1:39:09
Rank: #2647 (-129)
Half → 25K
16:00 | 6:36/mi
30K· 18.64 mi
2:01:09
Rank: #3037 (-390)
25K → 30K
22:00 | 7:05/mi
20M
2:10:51
Rank: #3124 (-87)
30K → 20M
9:42 | 7:08/mi
21M
2:18:29
Rank: #3205 (-81)
20M → 21M
7:38 | 7:38/mi
35K· 21.75 mi
2:23:39
Rank: #3227 (-22)
21M → 35K
5:10 | 6:54/mi
23M
2:32:46
Rank: #3301 (-74)
35K → 23M
9:07 | 7:17/mi
24M
2:40:00
Rank: #3387 (-86)
23M → 24M
7:14 | 7:14/mi
40K· 24.85 mi
2:46:15
Rank: #3444 (-57)
24M → 40K
6:15 | 7:19/mi
25.2M
2:48:57
Rank: #3451 (-7)
40K → 25.2M
2:42 | 7:50/mi
Finish· 26.22 mi
2:56:05
Rank: #3514 (-63)
25.2M → Finish
7:08 | 7:00/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:23:09
Pace6:21 /mi
2nd Half
Distance13.11 mi
Time1:32:56
Pace7:05 /mi
📊Positive Split: 11.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:21:3719:166:1219:16
6:12
-
10K
6.21 mi10:41:1638:556:1619:39
6:19
+0:07
15K
9.32 mi11:01:0858:476:1819:52
6:24
+0:05
20K
12.43 mi11:21:071:18:466:2019:59
6:26
+0:02
Half
13.11 mi11:25:301:23:096:214:23
6:25
-0:01
25K
15.53 mi11:41:301:39:096:2316:00
6:36
+0:11
30K
18.64 mi12:03:302:01:096:3022:00
7:05
+0:29
20M
20.00 mi12:13:122:10:516:339:42
7:08
+0:03
21M
21.00 mi12:20:502:18:296:367:38
7:38
+0:30
35K
21.75 mi12:26:002:23:396:365:10
6:54
-0:44
23M
23.00 mi12:35:072:32:466:399:07
7:17
+0:23
24M
24.00 mi12:42:212:40:006:407:14
7:14
-0:03
40K
24.85 mi12:48:362:46:156:416:15
7:19
+0:05
25.2M
25.20 mi12:51:182:48:576:422:42
7:50
+0:31
Finish
26.22 mi12:58:262:56:056:437:08
7:00
-0:50

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

6:12 /mi

Average Pace

6:43 /mi

Slowest Pace

7:50 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:39:09

56% of race

Time at Steady Pace

51:14

29% of race

Time at Slower Pace

25:42

15% of race

Average Pace: 6:43 /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 mi10:21:3719:166:1219:16
6:12
#1886
10K
6.21 mi10:41:1638:556:1619:39
6:19
#2207
15K
9.32 mi11:01:0858:476:1819:52
6:24
#2440
20K
12.43 mi11:21:071:18:466:2019:59
6:26
#2479
Half
13.11 mi11:25:301:23:096:214:23
6:25
#2518
25K
15.53 mi11:41:301:39:096:2316:00
6:36
#2647
30K
18.64 mi12:03:302:01:096:3022:00
7:05
#3037
20M
20.00 mi12:13:122:10:516:339:42
7:08
#3124
21M
21.00 mi12:20:502:18:296:367:38
7:38
#3205
35K
21.75 mi12:26:002:23:396:365:10
6:54
#3227
23M
23.00 mi12:35:072:32:466:399:07
7:17
#3301
24M
24.00 mi12:42:212:40:006:407:14
7:14
#3387
40K
24.85 mi12:48:362:46:156:416:15
7:19
#3444
25.2M
25.20 mi12:51:182:48:576:422:42
7:50
#3451
Finish
26.22 mi12:58:262:56:056:437:08
7:00
#3514
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1886179217922917(Top 10%)2781(Top 17%)2781(Top 49%)
10K6.21 mi3.10 mi2207-3212107-3152107-3152580(Top 9%)2464(Top 15%)2464(Top 44%)
15K9.32 mi3.11 mi2440-2332330-2232330-2232917(Top 10%)2781(Top 17%)2781(Top 49%)
20K12.43 mi3.11 mi2479-392366-362366-362720(Top 10%)2590(Top 16%)2590(Top 46%)
Half13.11 mi0.68 mi2518-392404-382404-383264(Top 11%)3105(Top 19%)3105(Top 55%)
25K15.53 mi2.42 mi2647-1292528-1242528-1243468(Top 12%)3273(Top 20%)3273(Top 58%)
30K18.64 mi3.11 mi3037-3902892-3642892-3645208(Top 18%)4709(Top 29%)4709(Top 83%)
20M20.00 mi1.36 mi3124-872962-702962-704875(Top 17%)4390(Top 27%)4390(Top 78%)
21M21.00 mi1.00 mi3205-813034-723034-725297(Top 19%)4596(Top 29%)4596(Top 81%)
35K21.75 mi0.75 mi3227-223048-143048-144770(Top 17%)4213(Top 26%)4213(Top 75%)
23M23.00 mi1.25 mi3301-743114-663114-665351(Top 19%)4562(Top 28%)4562(Top 81%)
24M24.00 mi1.00 mi3387-863188-743188-746011(Top 21%)4925(Top 31%)4925(Top 87%)
40K24.85 mi0.85 mi3444-573230-423230-425694(Top 20%)4668(Top 29%)4668(Top 83%)
25.2M25.20 mi0.35 mi3451-73231-13231-15017(Top 18%)4134(Top 26%)4134(Top 73%)
Finish26.22 mi1.02 mi3514-633280-493280-495717(Top 20%)4554(Top 28%)4554(Top 81%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 10%
×21stories
+97ft-345ft

Overall

2917

Males

2781

M18-39

2781

5K→10K

3.1 - 6.2 mi

Top 9%
×5stories
+79ft-138ft

Overall

2580

Males

2464

M18-39

2464

10K→15K

6.2 - 9.3 mi

Top 10%
×3stories
+67ft-78ft

Overall

2917

Males

2781

M18-39

2781

15K→20K

9.3 - 12.4 mi

Top 10%
×5stories
+106ft-86ft

Overall

2720

Males

2590

M18-39

2590

20K→Half

12.4 - 13.1 mi

Top 11%
×2stories
+19ft-37ft

Overall

3264

Males

3105

M18-39

3105

Half→25K

13.1 - 15.5 mi

Top 12%
×4stories
+66ft-88ft

Overall

3468

Males

3273

M18-39

3273

25K→30K

15.5 - 18.6 mi

Top 18%
×9stories
+181ft-148ft

Overall

5208

Males

4709

M18-39

4709

30K→20M

18.6 - 20.0 mi

Top 17%
×5stories
+64ft-50ft

Overall

4875

Males

4390

M18-39

4390

20M→21M

20.0 - 21.0 mi

Top 19%
×8stories
+106ft-24ft

Overall

5297

Males

4596

M18-39

4596

21M→35K

21.0 - 21.8 mi

Top 17%
×7stories
+17ft-86ft

Overall

4770

Males

4213

M18-39

4213

35K→23M

21.8 - 23.0 mi

Top 19%
×5stories
+23ft-63ft

Overall

5351

Males

4562

M18-39

4562

23M→24M

23.0 - 24.0 mi

Top 21%
×6stories
+12ft-82ft

Overall

6011

Males

4925

M18-39

4925

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5694

Males

4668

M18-39

4668

40K→25.2M

24.9 - 25.2 mi

Top 18%
×1story
+13ft-16ft

Overall

5017

Males

4134

M18-39

4134

25.2M→Finish

25.2 - 26.2 mi

Top 20%
×2stories
+22ft-21ft

Overall

5717

Males

4554

M18-39

4554

Passing Analysis

Category:
Athletes Passed
403
Passed By
2031
Net Change
-1628
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1886
5K → 10K28349-321#1886#2207
10K → 15K24257-233#2207#2440
15K → 20K5897-39#2440#2479
20K → Half544-39#2479#2518
Half → 25K27156-129#2518#2647
25K → 30K33423-390#2647#3037
30K → 20M33120-87#3037#3124
20M → 21M29110-81#3124#3205
21M → 35K2749-22#3205#3227
35K → 23M47121-74#3227#3301
23M → 24M23109-86#3301#3387
24M → 40K2885-57#3387#3444
40K → 25.2M1724-7#3444#3451
25.2M → Finish2487-63#3451#3514
TOTALS4032031-1628
📊

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