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BOSTON MARATHON 2025

Eoin Brennan

Bib: 1596•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 4%
Gender (Male)
#0 / 16105
Top 6%
Masters (Masters Men)
#0 / 10463
Top 1%
Division (M40-44)
#0 / 2247
Top 5%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
6:15/mi
19:24
↑ 97↓ 3451.5%
10K· 6.21 mi
6:12/mi
38:40
↑ 79↓ 1380.4%
15K· 9.32 mi
6:14/mi
58:03
↑ 67↓ 78
20K· 12.43 mi
6:13/mi
1:17:22
↑ 106↓ 860.1%
Half· 13.11 mi
6:09/mi
1:21:34
↑ 19↓ 370.5%
25K· 15.53 mi
6:16/mi
1:36:45
↑ 66↓ 880.2%
30K· 18.64 mi
6:17/mi
1:56:17
↑ 181↓ 1480.2%
20M
6:18/mi
2:04:51
↑ 64↓ 500.2%
21M
6:31/mi
2:11:22
↑ 106↓ 241.6%
35K· 21.75 mi
6:00/mi
2:15:51
↑ 17↓ 861.7%
23M
6:04/mi
2:23:27
↑ 23↓ 630.6%
24M
5:56/mi
2:29:23
↓ 821.3%
40K· 24.85 mi
5:58/mi
2:34:29
↓ 200.3%
25.2M
6:34/mi
2:36:45
↑ 13↓ 160.2%
Finish· 26.22 mi
5:46/mi
2:42:38
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half⚖️ Balanced
Distance13.11 mi
Time1:21:34
Pace6:13 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:21:04
Pace6:11 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:19:4919:246:1519:24
6:15
-
10K
6.21 mi10:39:0538:406:1319:16
6:12
-0:03
15K
9.32 mi10:58:2858:036:1419:23
6:14
+0:02
20K
12.43 mi11:17:471:17:226:1419:19
6:13
-0:01
Half
13.11 mi11:21:591:21:346:134:12
6:09
-0:04
25K
15.53 mi11:37:101:36:456:1415:11
6:16
+0:07
30K
18.64 mi11:56:421:56:176:1419:32
6:17
+0:01
20M
20.00 mi12:05:162:04:516:158:34
6:18
+0:01
21M
21.00 mi12:11:472:11:226:156:31
6:31
+0:13
35K
21.75 mi12:16:162:15:516:154:29
6:00
-0:31
23M
23.00 mi12:23:522:23:276:147:36
6:04
+0:04
24M
24.00 mi12:29:482:29:236:135:56
5:56
-0:08
40K
24.85 mi12:34:542:34:296:135:06
5:58
+0:02
25.2M
25.20 mi12:37:102:36:456:132:16
6:34
+0:36
Finish
26.22 mi12:43:032:42:386:125:53
5:46
-0:48

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

5:46 /mi

Average Pace

6:12 /mi

Slowest Pace

6:34 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:33:51

95% of race

Time at Steady Pace

8:47

5% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:12 /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 mi10:19:4919:246:1519:24
6:15
#2095
10K
6.21 mi10:39:0538:406:1319:16
6:12
#1990
15K
9.32 mi10:58:2858:036:1419:23
6:14
#1978
20K
12.43 mi11:17:471:17:226:1419:19
6:13
#1875
Half
13.11 mi11:21:591:21:346:134:12
6:09
#1871
25K
15.53 mi11:37:101:36:456:1415:11
6:16
#1818
30K
18.64 mi11:56:421:56:176:1419:32
6:17
#1650
20M
20.00 mi12:05:162:04:516:158:34
6:18
#1567
21M
21.00 mi12:11:472:11:226:156:31
6:31
#1477
35K
21.75 mi12:16:162:15:516:154:29
6:00
#1411
23M
23.00 mi12:23:522:23:276:147:36
6:04
#1299
24M
24.00 mi12:29:482:29:236:135:56
5:56
#1229
40K
24.85 mi12:34:542:34:296:135:06
5:58
#1152
25.2M
25.20 mi12:37:102:36:456:132:16
6:34
#1140
Finish
26.22 mi12:43:032:42:386:125:53
5:46
#1075
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi2095199719972019(Top 7%)1923(Top 12%)1923(Top 86%)
10K6.21 mi3.10 mi1990+1051895+1021895+1021911(Top 7%)1817(Top 11%)1817(Top 81%)
15K9.32 mi3.11 mi1978+121882+131882+132019(Top 7%)1923(Top 12%)1923(Top 86%)
20K12.43 mi3.11 mi1875+1031786+961786+961634(Top 6%)1552(Top 10%)1552(Top 69%)
Half13.11 mi0.68 mi1871+41782+41782+41720(Top 6%)1636(Top 10%)1636(Top 73%)
25K15.53 mi2.42 mi1818+531730+521730+521691(Top 6%)1606(Top 10%)1606(Top 71%)
30K18.64 mi3.11 mi1650+1681566+1641566+1641164(Top 4%)1098(Top 7%)1098(Top 49%)
20M20.00 mi1.36 mi1567+831486+801486+80972(Top 3%)917(Top 6%)917(Top 41%)
21M21.00 mi1.00 mi1477+901397+891397+89725(Top 3%)686(Top 4%)686(Top 31%)
35K21.75 mi0.75 mi1411+661333+641333+64730(Top 3%)683(Top 4%)683(Top 30%)
23M23.00 mi1.25 mi1299+1121223+1101223+110440(Top 2%)414(Top 3%)414(Top 18%)
24M24.00 mi1.00 mi1229+701156+671156+67466(Top 2%)432(Top 3%)432(Top 19%)
40K24.85 mi0.85 mi1152+771084+721084+72354(Top 1%)328(Top 2%)328(Top 15%)
25.2M25.20 mi0.35 mi1140+121073+111073+11568(Top 2%)528(Top 3%)528(Top 23%)
Finish26.22 mi1.02 mi1075+651012+611012+61477(Top 2%)448(Top 3%)448(Top 20%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21story building
+97ft-345ft

Overall

2019

Males

1923

M40-44

1923

5K→10K

3.1 - 6.2 mi

Top 7%
×5story building
+79ft-138ft

Overall

1911

Males

1817

M40-44

1817

10K→15K

6.2 - 9.3 mi

Top 7%
×3story building
+67ft-78ft

Overall

2019

Males

1923

M40-44

1923

15K→20K

9.3 - 12.4 mi

Top 6%
×5story building
+106ft-86ft

Overall

1634

Males

1552

M40-44

1552

20K→Half

12.4 - 13.1 mi

Top 6%
×2story building
+19ft-37ft

Overall

1720

Males

1636

M40-44

1636

Half→25K

13.1 - 15.5 mi

Top 6%
×4story building
+66ft-88ft

Overall

1691

Males

1606

M40-44

1606

25K→30K

15.5 - 18.6 mi

Top 4%
×9story building
+181ft-148ft

Overall

1164

Males

1098

M40-44

1098

30K→20M

18.6 - 20.0 mi

Top 3%
×5story building
+64ft-50ft

Overall

972

Males

917

M40-44

917

20M→21M

20.0 - 21.0 mi

Top 3%
×8story building
+106ft-24ft

Overall

725

Males

686

M40-44

686

21M→35K

21.0 - 21.8 mi

Top 3%
×7story building
+17ft-86ft

Overall

730

Males

683

M40-44

683

35K→23M

21.8 - 23.0 mi

Top 2%
×5story building
+23ft-63ft

Overall

440

Males

414

M40-44

414

23M→24M

23.0 - 24.0 mi

Top 2%
×6story building
+12ft-82ft

Overall

466

Males

432

M40-44

432

24M→40K

24.0 - 24.9 mi

Top 1%
×1story
+6ft-20ft

Overall

354

Males

328

M40-44

328

40K→25.2M

24.9 - 25.2 mi

Top 2%
×1story
+13ft-16ft

Overall

568

Males

528

M40-44

528

25.2M→Finish

25.2 - 26.2 mi

Top 2%
×2story building
+22ft-21ft

Overall

477

Males

448

M40-44

448

Passing Analysis

Category:
Athletes Passed
1209
Passed By
189
Net Change
+1020
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2095
5K → 10K17772+105#2095#1990
10K → 15K6957+12#1990#1978
15K → 20K11916+103#1978#1875
20K → Half1410+4#1875#1871
Half → 25K6916+53#1871#1818
25K → 30K1779+168#1818#1650
30K → 20M863+83#1650#1567
20M → 21M922+90#1567#1477
21M → 35K671+66#1477#1411
35K → 23M1131+112#1411#1299
23M → 24M700+70#1299#1229
24M → 40K781+77#1229#1152
40K → 25.2M131+12#1152#1140
25.2M → Finish650+65#1140#1075
TOTALS1209189+1020
📊

Passing Visuals

Category:
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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