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BOSTON MARATHON 2025

Brendan O'Connell

Bib: 29685•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
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
31:21
Rank: #25793
Start → 5K
31:21 | 10:05/mi
10K· 6.21 mi
58:38
Rank: #23994 (+1799)
5K → 10K
27:17 | 8:47/mi
15K· 9.32 mi
1:24:56
Rank: #22753 (+1241)
10K → 15K
26:18 | 8:28/mi
20K· 12.43 mi
1:50:10
Rank: #21240 (+1513)
15K → 20K
25:14 | 8:07/mi
Half· 13.11 mi
1:55:43
Rank: #21062 (+178)
20K → Half
5:33 | 8:08/mi
25K· 15.53 mi
2:17:04
Rank: #20727 (+335)
Half → 25K
21:21 | 8:48/mi
30K· 18.64 mi
2:45:15
Rank: #20206 (+521)
25K → 30K
28:11 | 9:04/mi
20M
2:57:31
Rank: #19958 (+248)
30K → 20M
12:16 | 9:02/mi
21M
3:07:06
Rank: #19745 (+213)
20M → 21M
9:35 | 9:35/mi
35K· 21.75 mi
3:14:01
Rank: #19737 (+8)
21M → 35K
6:55 | 9:15/mi
23M
3:26:26
Rank: #19790 (-53)
35K → 23M
12:25 | 9:55/mi
24M
3:35:43
Rank: #19735 (+55)
23M → 24M
9:17 | 9:17/mi
40K· 24.85 mi
3:43:41
Rank: #19684 (+51)
24M → 40K
7:58 | 9:19/mi
25.2M
3:47:06
Rank: #19624 (+60)
40K → 25.2M
3:25 | 9:54/mi
Finish· 26.22 mi
3:55:47
Rank: #19513 (+111)
25.2M → Finish
8:41 | 8:31/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:43
Pace8:50 /mi
2nd Half
Distance13.11 mi
Time2:00:04
Pace9:10 /mi
📊Positive Split: 3.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:49:3131:2110:0531:21
10:05
-
10K
6.21 mi12:16:4858:389:2627:17
8:47
-1:18
15K
9.32 mi12:43:061:24:569:0726:18
8:28
-0:19
20K
12.43 mi13:08:201:50:108:5225:14
8:07
-0:21
Half
13.11 mi13:13:531:55:438:505:33
8:08
+0:01
25K
15.53 mi13:35:142:17:048:4921:21
8:48
+0:40
30K
18.64 mi14:03:252:45:158:5228:11
9:04
+0:16
20M
20.00 mi14:15:412:57:318:5312:16
9:02
-0:02
21M
21.00 mi14:25:163:07:068:559:35
9:35
+0:33
35K
21.75 mi14:32:113:14:018:556:55
9:15
-0:20
23M
23.00 mi14:44:363:26:268:5912:25
9:55
+0:40
24M
24.00 mi14:53:533:35:438:599:17
9:17
-0:38
40K
24.85 mi15:01:513:43:419:007:58
9:19
+0:02
25.2M
25.20 mi15:05:163:47:069:013:25
9:54
+0:35
Finish
26.22 mi15:13:573:55:479:008:41
8:31
-1:23

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

8:07 /mi

Average Pace

9:00 /mi

Slowest Pace

10:05 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:05:46

28% of race

Time at Steady Pace

1:53:15

48% of race

Time at Slower Pace

56:46

24% of race

Average Pace: 9:00 /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 mi11:49:3131:2110:0531:21
10:05
#25793
10K
6.21 mi12:16:4858:389:2627:17
8:47
#23994
15K
9.32 mi12:43:061:24:569:0726:18
8:28
#22753
20K
12.43 mi13:08:201:50:108:5225:14
8:07
#21240
Half
13.11 mi13:13:531:55:438:505:33
8:08
#21062
25K
15.53 mi13:35:142:17:048:4921:21
8:48
#20727
30K
18.64 mi14:03:252:45:158:5228:11
9:04
#20206
20M
20.00 mi14:15:412:57:318:5312:16
9:02
#19958
21M
21.00 mi14:25:163:07:068:559:35
9:35
#19745
35K
21.75 mi14:32:113:14:018:556:55
9:15
#19737
23M
23.00 mi14:44:363:26:268:5912:25
9:55
#19790
24M
24.00 mi14:53:533:35:438:599:17
9:17
#19735
40K
24.85 mi15:01:513:43:419:007:58
9:19
#19684
25.2M
25.20 mi15:05:163:47:069:013:25
9:54
#19624
Finish
26.22 mi15:13:573:55:479:008:41
8:31
#19513
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi25793150901509019117(Top 67%)12096(Top 75%)12096(Top 214%)
10K6.21 mi3.10 mi23994+179914249+84114249+84121308(Top 75%)13048(Top 81%)13048(Top 231%)
15K9.32 mi3.11 mi22753+124113705+54413705+54419117(Top 67%)12096(Top 75%)12096(Top 214%)
20K12.43 mi3.11 mi21240+151313016+68913016+68915795(Top 56%)10661(Top 66%)10661(Top 189%)
Half13.11 mi0.68 mi21062+17812938+7812938+7816841(Top 59%)11136(Top 69%)11136(Top 197%)
25K15.53 mi2.42 mi20727+33512779+15912779+15918954(Top 67%)11948(Top 74%)11948(Top 212%)
30K18.64 mi3.11 mi20206+52112510+26912510+26918032(Top 63%)11397(Top 71%)11397(Top 202%)
20M20.00 mi1.36 mi19958+24812381+12912381+12916928(Top 60%)10793(Top 67%)10793(Top 191%)
21M21.00 mi1.00 mi19745+21312263+11812263+11816454(Top 58%)10462(Top 65%)10462(Top 185%)
35K21.75 mi0.75 mi19737+812245+1812245+1819335(Top 68%)11661(Top 72%)11661(Top 207%)
23M23.00 mi1.25 mi19790-5312232+1312232+1320220(Top 71%)12009(Top 75%)12009(Top 213%)
24M24.00 mi1.00 mi19735+5512181+5112181+5118734(Top 66%)11290(Top 70%)11290(Top 200%)
40K24.85 mi0.85 mi19684+5112146+3512146+3517925(Top 63%)10792(Top 67%)10792(Top 191%)
25.2M25.20 mi0.35 mi19624+6012102+4412102+4416585(Top 58%)10178(Top 63%)10178(Top 180%)
Finish26.22 mi1.02 mi19513+11112043+5912043+5916342(Top 58%)10091(Top 63%)10091(Top 179%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21stories
+97ft-345ft

Overall

19117

Males

12096

M18-39

12096

5K→10K

3.1 - 6.2 mi

Top 75%
×5stories
+79ft-138ft

Overall

21308

Males

13048

M18-39

13048

10K→15K

6.2 - 9.3 mi

Top 67%
×3stories
+67ft-78ft

Overall

19117

Males

12096

M18-39

12096

15K→20K

9.3 - 12.4 mi

Top 56%
×5stories
+106ft-86ft

Overall

15795

Males

10661

M18-39

10661

20K→Half

12.4 - 13.1 mi

Top 59%
×2stories
+19ft-37ft

Overall

16841

Males

11136

M18-39

11136

Half→25K

13.1 - 15.5 mi

Top 67%
×4stories
+66ft-88ft

Overall

18954

Males

11948

M18-39

11948

25K→30K

15.5 - 18.6 mi

Top 63%
×9stories
+181ft-148ft

Overall

18032

Males

11397

M18-39

11397

30K→20M

18.6 - 20.0 mi

Top 60%
×5stories
+64ft-50ft

Overall

16928

Males

10793

M18-39

10793

20M→21M

20.0 - 21.0 mi

Top 58%
×8stories
+106ft-24ft

Overall

16454

Males

10462

M18-39

10462

21M→35K

21.0 - 21.8 mi

Top 68%
×7stories
+17ft-86ft

Overall

19335

Males

11661

M18-39

11661

35K→23M

21.8 - 23.0 mi

Top 71%
×5stories
+23ft-63ft

Overall

20220

Males

12009

M18-39

12009

23M→24M

23.0 - 24.0 mi

Top 66%
×6stories
+12ft-82ft

Overall

18734

Males

11290

M18-39

11290

24M→40K

24.0 - 24.9 mi

Top 63%
×1story
+6ft-20ft

Overall

17925

Males

10792

M18-39

10792

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

16585

Males

10178

M18-39

10178

25.2M→Finish

25.2 - 26.2 mi

Top 58%
×2stories
+22ft-21ft

Overall

16342

Males

10091

M18-39

10091

Passing Analysis

Category:
Athletes Passed
6594
Passed By
314
Net Change
+6280
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25793
5K → 10K17990+1799#25793#23994
10K → 15K12421+1241#23994#22753
15K → 20K15141+1513#22753#21240
20K → Half1780+178#21240#21062
Half → 25K35015+335#21062#20727
25K → 30K53817+521#20727#20206
30K → 20M25810+248#20206#19958
20M → 21M2207+213#19958#19745
21M → 35K4941+8#19745#19737
35K → 23M77130-53#19737#19790
23M → 24M9540+55#19790#19735
24M → 40K8332+51#19735#19684
40K → 25.2M666+60#19684#19624
25.2M → Finish12514+111#19624#19513
TOTALS6594314+6280
📊

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