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BOSTON MARATHON 2025

Ethan Brouwer

Bib: 2529•M

WA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 39%
Gender (Male)
#0 / 16105
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
22:26
Rank: #9632
Start → 5K
22:26 | 7:13/mi
10K· 6.21 mi
45:04
Rank: #9908 (-276)
5K → 10K
22:38 | 7:17/mi
15K· 9.32 mi
1:07:11
Rank: #9393 (+515)
10K → 15K
22:07 | 7:07/mi
20K· 12.43 mi
1:29:32
Rank: #9028 (+365)
15K → 20K
22:21 | 7:12/mi
Half· 13.11 mi
1:34:16
Rank: #8892 (+136)
20K → Half
4:44 | 6:56/mi
25K· 15.53 mi
1:51:40
Rank: #8577 (+315)
Half → 25K
17:24 | 7:11/mi
30K· 18.64 mi
2:17:10
Rank: #9357 (-780)
25K → 30K
25:30 | 8:12/mi
20M
2:28:36
Rank: #9632 (-275)
30K → 20M
11:26 | 8:25/mi
21M
2:36:53
Rank: #9560 (+72)
20M → 21M
8:17 | 8:17/mi
35K· 21.75 mi
2:44:04
Rank: #10124 (-564)
21M → 35K
7:11 | 9:36/mi
23M
2:54:29
Rank: #10241 (-117)
35K → 23M
10:25 | 8:19/mi
24M
3:03:35
Rank: #10616 (-375)
23M → 24M
9:06 | 9:06/mi
40K· 24.85 mi
3:11:30
Rank: #10893 (-277)
24M → 40K
7:55 | 9:16/mi
25.2M
3:14:55
Rank: #10988 (-95)
40K → 25.2M
3:25 | 9:54/mi
Finish· 26.22 mi
3:22:58
Rank: #11021 (-33)
25.2M → Finish
8:03 | 7:54/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:34:16
Pace7:11 /mi
2nd Half
Distance13.11 mi
Time1:48:42
Pace8:18 /mi
📊Positive Split: 15.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:1922:267:1322:26
7:13
-
10K
6.21 mi10:47:5745:047:1522:38
7:17
+0:04
15K
9.32 mi11:10:041:07:117:1222:07
7:07
-0:10
20K
12.43 mi11:32:251:29:327:1222:21
7:12
+0:05
Half
13.11 mi11:37:091:34:167:114:44
6:56
-0:16
25K
15.53 mi11:54:331:51:407:1117:24
7:11
+0:15
30K
18.64 mi12:20:032:17:107:2125:30
8:12
+1:01
20M
20.00 mi12:31:292:28:367:2611:26
8:25
+0:13
21M
21.00 mi12:39:462:36:537:288:17
8:17
-0:08
35K
21.75 mi12:46:572:44:047:337:11
9:36
+1:19
23M
23.00 mi12:57:222:54:297:3510:25
8:19
-1:17
24M
24.00 mi13:06:283:03:357:399:06
9:06
+0:47
40K
24.85 mi13:14:233:11:307:427:55
9:16
+0:10
25.2M
25.20 mi13:17:483:14:557:443:25
9:54
+0:38
Finish
26.22 mi13:25:513:22:587:458:03
7:54
-2:00

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

6:56 /mi

Average Pace

7:45 /mi

Slowest Pace

9:54 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:51:40

55% of race

Time at Steady Pace

1:03:41

31% of race

Time at Slower Pace

27:37

14% of race

Average Pace: 7:44 /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 mi10:25:1922:267:1322:26
7:13
#9632
10K
6.21 mi10:47:5745:047:1522:38
7:17
#9908
15K
9.32 mi11:10:041:07:117:1222:07
7:07
#9393
20K
12.43 mi11:32:251:29:327:1222:21
7:12
#9028
Half
13.11 mi11:37:091:34:167:114:44
6:56
#8892
25K
15.53 mi11:54:331:51:407:1117:24
7:11
#8577
30K
18.64 mi12:20:032:17:107:2125:30
8:12
#9357
20M
20.00 mi12:31:292:28:367:2611:26
8:25
#9632
21M
21.00 mi12:39:462:36:537:288:17
8:17
#9560
35K
21.75 mi12:46:572:44:047:337:11
9:36
#10124
23M
23.00 mi12:57:222:54:297:3510:25
8:19
#10241
24M
24.00 mi13:06:283:03:357:399:06
9:06
#10616
40K
24.85 mi13:14:233:11:307:427:55
9:16
#10893
25.2M
25.20 mi13:17:483:14:557:443:25
9:54
#10988
Finish
26.22 mi13:25:513:22:587:458:03
7:54
#11021
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi9632797179718470(Top 30%)7229(Top 45%)7229(Top 128%)
10K6.21 mi3.10 mi9908-2768122-1518122-15110224(Top 36%)8274(Top 51%)8274(Top 147%)
15K9.32 mi3.11 mi9393+5157815+3077815+3078470(Top 30%)7229(Top 45%)7229(Top 128%)
20K12.43 mi3.11 mi9028+3657580+2357580+2358156(Top 29%)6970(Top 43%)6970(Top 124%)
Half13.11 mi0.68 mi8892+1367494+867494+867174(Top 25%)6351(Top 39%)6351(Top 113%)
25K15.53 mi2.42 mi8577+3157287+2077287+2077436(Top 26%)6407(Top 40%)6407(Top 114%)
30K18.64 mi3.11 mi9357-7807672-3857672-38512865(Top 45%)9072(Top 56%)9072(Top 161%)
20M20.00 mi1.36 mi9632-2757780-1087780-10813213(Top 47%)9079(Top 56%)9079(Top 161%)
21M21.00 mi1.00 mi9560+727711+697711+699116(Top 32%)6884(Top 43%)6884(Top 122%)
35K21.75 mi0.75 mi10124-5647971-2607971-26020655(Top 73%)12267(Top 76%)12267(Top 217%)
23M23.00 mi1.25 mi10241-1177978-77978-712137(Top 43%)8294(Top 51%)8294(Top 147%)
24M24.00 mi1.00 mi10616-3758140-1628140-16217838(Top 63%)10841(Top 67%)10841(Top 192%)
40K24.85 mi0.85 mi10893-2778231-918231-9117611(Top 62%)10632(Top 66%)10632(Top 188%)
25.2M25.20 mi0.35 mi10988-958255-248255-2416524(Top 58%)10117(Top 63%)10117(Top 179%)
Finish26.22 mi1.02 mi11021-338240+158240+1512141(Top 43%)8107(Top 50%)8107(Top 144%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 30%
×21stories
+97ft-345ft

Overall

8470

Males

7229

M18-39

7229

5K→10K

3.1 - 6.2 mi

Top 36%
×5stories
+79ft-138ft

Overall

10224

Males

8274

M18-39

8274

10K→15K

6.2 - 9.3 mi

Top 30%
×3stories
+67ft-78ft

Overall

8470

Males

7229

M18-39

7229

15K→20K

9.3 - 12.4 mi

Top 29%
×5stories
+106ft-86ft

Overall

8156

Males

6970

M18-39

6970

20K→Half

12.4 - 13.1 mi

Top 25%
×2stories
+19ft-37ft

Overall

7174

Males

6351

M18-39

6351

Half→25K

13.1 - 15.5 mi

Top 26%
×4stories
+66ft-88ft

Overall

7436

Males

6407

M18-39

6407

25K→30K

15.5 - 18.6 mi

Top 45%
×9stories
+181ft-148ft

Overall

12865

Males

9072

M18-39

9072

30K→20M

18.6 - 20.0 mi

Top 47%
×5stories
+64ft-50ft

Overall

13213

Males

9079

M18-39

9079

20M→21M

20.0 - 21.0 mi

Top 32%
×8stories
+106ft-24ft

Overall

9116

Males

6884

M18-39

6884

21M→35K

21.0 - 21.8 mi

Top 73%
×7stories
+17ft-86ft

Overall

20655

Males

12267

M18-39

12267

35K→23M

21.8 - 23.0 mi

Top 43%
×5stories
+23ft-63ft

Overall

12137

Males

8294

M18-39

8294

23M→24M

23.0 - 24.0 mi

Top 63%
×6stories
+12ft-82ft

Overall

17838

Males

10841

M18-39

10841

24M→40K

24.0 - 24.9 mi

Top 62%
×1story
+6ft-20ft

Overall

17611

Males

10632

M18-39

10632

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

16524

Males

10117

M18-39

10117

25.2M→Finish

25.2 - 26.2 mi

Top 43%
×2stories
+22ft-21ft

Overall

12141

Males

8107

M18-39

8107

Passing Analysis

Category:
Athletes Passed
1949*
Passed By
3335
Net Change
-1389
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#9632
5K → 10K127402-276#9632#9908
10K → 15K529*14+515#9908#9393
15K → 20K39126+365#9393#9028
20K → Half1382+136#9028#8892
Half → 25K33116+315#8892#8577
25K → 30K68848-780#8577#9357
30K → 20M52327-275#9357#9632
20M → 21M12250+72#9632#9560
21M → 35K6568-564#9560#10124
35K → 23M72189-117#10124#10241
23M → 24M20395-375#10241#10616
24M → 40K19296-277#10616#10893
40K → 25.2M20115-95#10893#10988
25.2M → Finish5487-33#10988#11021
TOTALS1949*3335-1389

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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