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BOSTON MARATHON 2025

Byrd Earthman

Bib: 2177•M

TN

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 19%
Gender (Male)
#0 / 16105
Top 31%
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
21:47
Rank: #7907
Start → 5K
21:47 | 7:01/mi
10K· 6.21 mi
43:28
Rank: #7815 (+92)
5K → 10K
21:41 | 6:59/mi
15K· 9.32 mi
1:05:09
Rank: #7689 (+126)
10K → 15K
21:41 | 6:59/mi
20K· 12.43 mi
1:26:43
Rank: #7344 (+345)
15K → 20K
21:34 | 6:56/mi
Half· 13.11 mi
1:31:21
Rank: #7276 (+68)
20K → Half
4:38 | 6:47/mi
25K· 15.53 mi
1:48:05
Rank: #6987 (+289)
Half → 25K
16:44 | 6:54/mi
30K· 18.64 mi
2:09:40
Rank: #6367 (+620)
25K → 30K
21:35 | 6:57/mi
20M
2:19:06
Rank: #6097 (+270)
30K → 20M
9:26 | 6:57/mi
21M
2:26:34
Rank: #5950 (+147)
20M → 21M
7:28 | 7:28/mi
35K· 21.75 mi
2:31:32
Rank: #5814 (+136)
21M → 35K
4:58 | 6:38/mi
23M
2:40:27
Rank: #5653 (+161)
35K → 23M
8:55 | 7:07/mi
24M
2:47:29
Rank: #5555 (+98)
23M → 24M
7:02 | 7:02/mi
40K· 24.85 mi
2:53:40
Rank: #5494 (+61)
24M → 40K
6:11 | 7:14/mi
25.2M
2:56:30
Rank: #5480 (+14)
40K → 25.2M
2:50 | 8:13/mi
Finish· 26.22 mi
3:03:59
Rank: #5518 (-38)
25.2M → Finish
7:29 | 7:21/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:31:21
Pace6:58 /mi
2nd Half
Distance13.11 mi
Time1:32:38
Pace7:04 /mi
📊Positive Split: 1.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:2821:477:0121:47
7:01
-
10K
6.21 mi10:44:0943:287:0021:41
6:59
-0:02
15K
9.32 mi11:05:501:05:096:5921:41
6:59
0:00
20K
12.43 mi11:27:241:26:436:5921:34
6:56
-0:03
Half
13.11 mi11:32:021:31:216:584:38
6:47
-0:09
25K
15.53 mi11:48:461:48:056:5716:44
6:54
+0:07
30K
18.64 mi12:10:212:09:406:5721:35
6:57
+0:03
20M
20.00 mi12:19:472:19:066:579:26
6:57
0:00
21M
21.00 mi12:27:152:26:346:597:28
7:28
+0:31
35K
21.75 mi12:32:132:31:326:584:58
6:38
-0:50
23M
23.00 mi12:41:082:40:276:598:55
7:07
+0:29
24M
24.00 mi12:48:102:47:296:597:02
7:02
-0:05
40K
24.85 mi12:54:212:53:406:596:11
7:14
+0:12
25.2M
25.20 mi12:57:112:56:307:002:50
8:13
+0:59
Finish
26.22 mi13:04:403:03:597:017:29
7:21
-0:52

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

6:38 /mi

Average Pace

7:01 /mi

Slowest Pace

8:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

9:36

5% of race

Time at Steady Pace

2:30:25

82% of race

Time at Slower Pace

23:58

13% of race

Average Pace: 7:01 /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 mi10:22:2821:477:0121:47
7:01
#7907
10K
6.21 mi10:44:0943:287:0021:41
6:59
#7815
15K
9.32 mi11:05:501:05:096:5921:41
6:59
#7689
20K
12.43 mi11:27:241:26:436:5921:34
6:56
#7344
Half
13.11 mi11:32:021:31:216:584:38
6:47
#7276
25K
15.53 mi11:48:461:48:056:5716:44
6:54
#6987
30K
18.64 mi12:10:212:09:406:5721:35
6:57
#6367
20M
20.00 mi12:19:472:19:066:579:26
6:57
#6097
21M
21.00 mi12:27:152:26:346:597:28
7:28
#5950
35K
21.75 mi12:32:132:31:326:584:58
6:38
#5814
23M
23.00 mi12:41:082:40:276:598:55
7:07
#5653
24M
24.00 mi12:48:102:47:296:597:02
7:02
#5555
40K
24.85 mi12:54:212:53:406:596:11
7:14
#5494
25.2M
25.20 mi12:57:112:56:307:002:50
8:13
#5480
Finish
26.22 mi13:04:403:03:597:017:29
7:21
#5518
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi7907693669367476(Top 26%)6595(Top 41%)6595(Top 117%)
10K6.21 mi3.10 mi7815+926862+746862+747791(Top 27%)6834(Top 42%)6834(Top 121%)
15K9.32 mi3.11 mi7689+1266770+926770+927476(Top 26%)6595(Top 41%)6595(Top 117%)
20K12.43 mi3.11 mi7344+3456520+2506520+2506516(Top 23%)5838(Top 36%)5838(Top 103%)
Half13.11 mi0.68 mi7276+686470+506470+506097(Top 21%)5518(Top 34%)5518(Top 98%)
25K15.53 mi2.42 mi6987+2896249+2216249+2215689(Top 20%)5151(Top 32%)5151(Top 91%)
30K18.64 mi3.11 mi6367+6205728+5215728+5214380(Top 15%)4011(Top 25%)4011(Top 71%)
20M20.00 mi1.36 mi6097+2705496+2325496+2323792(Top 13%)3491(Top 22%)3491(Top 62%)
21M21.00 mi1.00 mi5950+1475370+1265370+1264460(Top 16%)3978(Top 25%)3978(Top 71%)
35K21.75 mi0.75 mi5814+1365257+1135257+1133198(Top 11%)2940(Top 18%)2940(Top 52%)
23M23.00 mi1.25 mi5653+1615115+1425115+1424467(Top 16%)3934(Top 24%)3934(Top 70%)
24M24.00 mi1.00 mi5555+985023+925023+924833(Top 17%)4147(Top 26%)4147(Top 74%)
40K24.85 mi0.85 mi5494+614963+604963+605228(Top 18%)4369(Top 27%)4369(Top 77%)
25.2M25.20 mi0.35 mi5480+144945+184945+187097(Top 25%)5387(Top 33%)5387(Top 95%)
Finish26.22 mi1.02 mi5518-384958-134958-138046(Top 28%)5931(Top 37%)5931(Top 105%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21stories
+97ft-345ft

Overall

7476

Males

6595

M18-39

6595

5K→10K

3.1 - 6.2 mi

Top 27%
×5stories
+79ft-138ft

Overall

7791

Males

6834

M18-39

6834

10K→15K

6.2 - 9.3 mi

Top 26%
×3stories
+67ft-78ft

Overall

7476

Males

6595

M18-39

6595

15K→20K

9.3 - 12.4 mi

Top 23%
×5stories
+106ft-86ft

Overall

6516

Males

5838

M18-39

5838

20K→Half

12.4 - 13.1 mi

Top 21%
×2stories
+19ft-37ft

Overall

6097

Males

5518

M18-39

5518

Half→25K

13.1 - 15.5 mi

Top 20%
×4stories
+66ft-88ft

Overall

5689

Males

5151

M18-39

5151

25K→30K

15.5 - 18.6 mi

Top 15%
×9stories
+181ft-148ft

Overall

4380

Males

4011

M18-39

4011

30K→20M

18.6 - 20.0 mi

Top 13%
×5stories
+64ft-50ft

Overall

3792

Males

3491

M18-39

3491

20M→21M

20.0 - 21.0 mi

Top 16%
×8stories
+106ft-24ft

Overall

4460

Males

3978

M18-39

3978

21M→35K

21.0 - 21.8 mi

Top 11%
×7stories
+17ft-86ft

Overall

3198

Males

2940

M18-39

2940

35K→23M

21.8 - 23.0 mi

Top 16%
×5stories
+23ft-63ft

Overall

4467

Males

3934

M18-39

3934

23M→24M

23.0 - 24.0 mi

Top 17%
×6stories
+12ft-82ft

Overall

4833

Males

4147

M18-39

4147

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

5228

Males

4369

M18-39

4369

40K→25.2M

24.9 - 25.2 mi

Top 25%
×1story
+13ft-16ft

Overall

7097

Males

5387

M18-39

5387

25.2M→Finish

25.2 - 26.2 mi

Top 28%
×2stories
+22ft-21ft

Overall

8046

Males

5931

M18-39

5931

Passing Analysis

Category:
Athletes Passed
2787
Passed By
398
Net Change
+2389
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#7907
5K → 10K246154+92#7907#7815
10K → 15K20478+126#7815#7689
15K → 20K3516+345#7689#7344
20K → Half735+68#7344#7276
Half → 25K2934+289#7276#6987
25K → 30K6211+620#6987#6367
30K → 20M2722+270#6367#6097
20M → 21M1569+147#6097#5950
21M → 35K1382+136#5950#5814
35K → 23M1709+161#5814#5653
23M → 24M11517+98#5653#5555
24M → 40K7514+61#5555#5494
40K → 25.2M3420+14#5494#5480
25.2M → Finish3977-38#5480#5518
TOTALS2787398+2389
📊

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