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BOSTON MARATHON 2025

Jeffrey Byrne

Bib: 30561•M

IL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M40-44)
#0 / 2247
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:43
Rank: #23360
Start → 5K
28:43 | 9:15/mi
10K· 6.21 mi
56:34
Rank: #22822 (+538)
5K → 10K
27:51 | 8:58/mi
15K· 9.32 mi
1:24:24
Rank: #22516 (+306)
10K → 15K
27:50 | 8:58/mi
20K· 12.43 mi
1:54:08
Rank: #22713 (-197)
15K → 20K
29:44 | 9:34/mi
Half· 13.11 mi
2:00:15
Rank: #22654 (+59)
20K → Half
6:07 | 8:58/mi
25K· 15.53 mi
2:23:24
Rank: #22545 (+109)
Half → 25K
23:09 | 9:33/mi
30K· 18.64 mi
2:54:41
Rank: #22395 (+150)
25K → 30K
31:17 | 10:04/mi
20M
3:09:19
Rank: #22451 (-56)
30K → 20M
14:38 | 10:46/mi
21M
3:21:21
Rank: #22526 (-75)
20M → 21M
12:02 | 12:02/mi
35K· 21.75 mi
3:29:13
Rank: #22540 (-14)
21M → 35K
7:52 | 10:31/mi
23M
3:44:02
Rank: #22727 (-187)
35K → 23M
14:49 | 11:50/mi
24M
3:54:51
Rank: #22740 (-13)
23M → 24M
10:49 | 10:49/mi
40K· 24.85 mi
4:03:47
Rank: #22688 (+52)
24M → 40K
8:56 | 10:27/mi
25.2M
4:07:46
Rank: #22688
40K → 25.2M
3:59 | 11:33/mi
Finish· 26.22 mi
4:17:14
Rank: #22624 (+64)
25.2M → Finish
9:28 | 9:17/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:00:15
Pace9:10 /mi
2nd Half
Distance13.11 mi
Time2:16:59
Pace10:27 /mi
📊Positive Split: 13.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:3628:439:1528:43
9:15
-
10K
6.21 mi12:14:2756:349:0627:51
8:58
-0:17
15K
9.32 mi12:42:171:24:249:0327:50
8:58
0:00
20K
12.43 mi13:12:011:54:089:1129:44
9:34
+0:36
Half
13.11 mi13:18:082:00:159:106:07
8:58
-0:36
25K
15.53 mi13:41:172:23:249:1423:09
9:33
+0:35
30K
18.64 mi14:12:342:54:419:2231:17
10:04
+0:31
20M
20.00 mi14:27:123:09:199:2814:38
10:46
+0:42
21M
21.00 mi14:39:143:21:219:3512:02
12:02
+1:16
35K
21.75 mi14:47:063:29:139:377:52
10:31
-1:31
23M
23.00 mi15:01:553:44:029:4414:49
11:50
+1:19
24M
24.00 mi15:12:443:54:519:4710:49
10:49
-1:01
40K
24.85 mi15:21:404:03:479:488:56
10:27
-0:22
25.2M
25.20 mi15:25:394:07:469:503:59
11:33
+1:06
Finish
26.22 mi15:35:074:17:149:499:28
9:17
-2:16

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

8:58 /mi

Average Pace

9:49 /mi

Slowest Pace

12:02 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:03:08

48% of race

Time at Steady Pace

1:17:49

30% of race

Time at Slower Pace

56:17

22% of race

Average Pace: 9:49 /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 mi11:46:3628:439:1528:43
9:15
#23360
10K
6.21 mi12:14:2756:349:0627:51
8:58
#22822
15K
9.32 mi12:42:171:24:249:0327:50
8:58
#22516
20K
12.43 mi13:12:011:54:089:1129:44
9:34
#22713
Half
13.11 mi13:18:082:00:159:106:07
8:58
#22654
25K
15.53 mi13:41:172:23:249:1423:09
9:33
#22545
30K
18.64 mi14:12:342:54:419:2231:17
10:04
#22395
20M
20.00 mi14:27:123:09:199:2814:38
10:46
#22451
21M
21.00 mi14:39:143:21:219:3512:02
12:02
#22526
35K
21.75 mi14:47:063:29:139:377:52
10:31
#22540
23M
23.00 mi15:01:553:44:029:4414:49
11:50
#22727
24M
24.00 mi15:12:443:54:519:4710:49
10:49
#22740
40K
24.85 mi15:21:404:03:479:488:56
10:27
#22688
25.2M
25.20 mi15:25:394:07:469:503:59
11:33
#22688
Finish
26.22 mi15:35:074:17:149:499:28
9:17
#22624
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi23360139331393321844(Top 77%)13322(Top 83%)13322(Top 593%)
10K6.21 mi3.10 mi22822+53813701+23213701+23222226(Top 78%)13442(Top 83%)13442(Top 598%)
15K9.32 mi3.11 mi22516+30613590+11113590+11121844(Top 77%)13322(Top 83%)13322(Top 593%)
20K12.43 mi3.11 mi22713-19713694-10413694-10423111(Top 81%)13839(Top 86%)13839(Top 616%)
Half13.11 mi0.68 mi22654+5913659+3513659+3521666(Top 76%)13206(Top 82%)13206(Top 588%)
25K15.53 mi2.42 mi22545+10913595+6413595+6422020(Top 78%)13302(Top 83%)13302(Top 592%)
30K18.64 mi3.11 mi22395+15013486+10913486+10921790(Top 77%)13068(Top 81%)13068(Top 582%)
20M20.00 mi1.36 mi22451-5613489-313489-323101(Top 81%)13573(Top 84%)13573(Top 604%)
21M21.00 mi1.00 mi22526-7513503-1413503-1423646(Top 83%)13748(Top 85%)13748(Top 612%)
35K21.75 mi0.75 mi22540-1413497+613497+623196(Top 82%)13482(Top 84%)13482(Top 600%)
23M23.00 mi1.25 mi22727-18713553-5613553-5624828(Top 87%)14256(Top 89%)14256(Top 634%)
24M24.00 mi1.00 mi22740-1313539+1413539+1423591(Top 83%)13613(Top 85%)13613(Top 606%)
40K24.85 mi0.85 mi22688+5213498+4113498+4121765(Top 77%)12640(Top 78%)12640(Top 563%)
25.2M25.20 mi0.35 mi2268813487+1113487+1122168(Top 78%)12873(Top 80%)12873(Top 573%)
Finish26.22 mi1.02 mi22624+6413437+5013437+5020339(Top 72%)11982(Top 74%)11982(Top 533%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 77%
×21stories
+97ft-345ft

Overall

21844

Males

13322

M40-44

13322

5K→10K

3.1 - 6.2 mi

Top 78%
×5stories
+79ft-138ft

Overall

22226

Males

13442

M40-44

13442

10K→15K

6.2 - 9.3 mi

Top 77%
×3stories
+67ft-78ft

Overall

21844

Males

13322

M40-44

13322

15K→20K

9.3 - 12.4 mi

Top 81%
×5stories
+106ft-86ft

Overall

23111

Males

13839

M40-44

13839

20K→Half

12.4 - 13.1 mi

Top 76%
×2stories
+19ft-37ft

Overall

21666

Males

13206

M40-44

13206

Half→25K

13.1 - 15.5 mi

Top 78%
×4stories
+66ft-88ft

Overall

22020

Males

13302

M40-44

13302

25K→30K

15.5 - 18.6 mi

Top 77%
×9stories
+181ft-148ft

Overall

21790

Males

13068

M40-44

13068

30K→20M

18.6 - 20.0 mi

Top 81%
×5stories
+64ft-50ft

Overall

23101

Males

13573

M40-44

13573

20M→21M

20.0 - 21.0 mi

Top 83%
×8stories
+106ft-24ft

Overall

23646

Males

13748

M40-44

13748

21M→35K

21.0 - 21.8 mi

Top 82%
×7stories
+17ft-86ft

Overall

23196

Males

13482

M40-44

13482

35K→23M

21.8 - 23.0 mi

Top 87%
×5stories
+23ft-63ft

Overall

24828

Males

14256

M40-44

14256

23M→24M

23.0 - 24.0 mi

Top 83%
×6stories
+12ft-82ft

Overall

23591

Males

13613

M40-44

13613

24M→40K

24.0 - 24.9 mi

Top 77%
×1story
+6ft-20ft

Overall

21765

Males

12640

M40-44

12640

40K→25.2M

24.9 - 25.2 mi

Top 78%
×1story
+13ft-16ft

Overall

22168

Males

12873

M40-44

12873

25.2M→Finish

25.2 - 26.2 mi

Top 72%
×2stories
+22ft-21ft

Overall

20339

Males

11982

M40-44

11982

Passing Analysis

Category:
Athletes Passed
1974
Passed By
1238
Net Change
+736
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23360
5K → 10K58850+538#23360#22822
10K → 15K35549+306#22822#22516
15K → 20K115312-197#22516#22713
20K → Half7112+59#22713#22654
Half → 25K18778+109#22654#22545
25K → 30K255105+150#22545#22395
30K → 20M58114-56#22395#22451
20M → 21M53128-75#22451#22526
21M → 35K4660-14#22526#22540
35K → 23M27214-187#22540#22727
23M → 24M4659-13#22727#22740
24M → 40K7422+52#22740#22688
40K → 25.2M22220#22688#22688
25.2M → Finish7713+64#22688#22624
TOTALS19741238+736
📊

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