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BOSTON MARATHON 2025

John O'Connell

Bib: 4559•M

PA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 5%
Gender (Male)
#0 / 16105
Top 8%
Division (M18-39)
#0 / 5642
Top 19%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
19:16
Rank: #1861
Start → 5K
19:16 | 6:12/mi
10K· 6.21 mi
38:32
Rank: #1868 (-7)
5K → 10K
19:16 | 6:12/mi
15K· 9.32 mi
57:48
Rank: #1852 (+16)
10K → 15K
19:16 | 6:12/mi
20K· 12.43 mi
1:16:52
Rank: #1690 (+162)
15K → 20K
19:04 | 6:08/mi
Half· 13.11 mi
1:21:00
Rank: #1670 (+20)
20K → Half
4:08 | 6:03/mi
25K· 15.53 mi
1:35:55
Rank: #1567 (+103)
Half → 25K
14:55 | 6:09/mi
30K· 18.64 mi
1:55:26
Rank: #1448 (+119)
25K → 30K
19:31 | 6:17/mi
20M
2:04:09
Rank: #1413 (+35)
30K → 20M
8:43 | 6:25/mi
21M
2:10:50
Rank: #1372 (+41)
20M → 21M
6:41 | 6:41/mi
35K· 21.75 mi
2:15:34
Rank: #1364 (+8)
21M → 35K
4:44 | 6:19/mi
23M
2:23:29
Rank: #1306 (+58)
35K → 23M
7:55 | 6:19/mi
24M
2:29:51
Rank: #1299 (+7)
23M → 24M
6:22 | 6:22/mi
40K· 24.85 mi
2:35:27
Rank: #1302 (-3)
24M → 40K
5:36 | 6:33/mi
25.2M
2:37:57
Rank: #1310 (-8)
40K → 25.2M
2:30 | 7:15/mi
Finish· 26.22 mi
2:44:27
Rank: #1313 (-3)
25.2M → Finish
6:30 | 6:23/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:21:00
Pace6:11 /mi
2nd Half
Distance13.11 mi
Time1:23:27
Pace6:22 /mi
📊Positive Split: 3.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:5119:166:1219:16
6:12
-
10K
6.21 mi10:42:0738:326:1219:16
6:12
0:00
15K
9.32 mi11:01:2357:486:1219:16
6:12
0:00
20K
12.43 mi11:20:271:16:526:1119:04
6:08
-0:04
Half
13.11 mi11:24:351:21:006:114:08
6:03
-0:05
25K
15.53 mi11:39:301:35:556:1014:55
6:09
+0:06
30K
18.64 mi11:59:011:55:266:1219:31
6:17
+0:08
20M
20.00 mi12:07:442:04:096:128:43
6:25
+0:08
21M
21.00 mi12:14:252:10:506:146:41
6:41
+0:16
35K
21.75 mi12:19:092:15:346:144:44
6:19
-0:22
23M
23.00 mi12:27:042:23:296:147:55
6:19
0:00
24M
24.00 mi12:33:262:29:516:156:22
6:22
+0:03
40K
24.85 mi12:39:022:35:276:155:36
6:33
+0:11
25.2M
25.20 mi12:41:322:37:576:162:30
7:15
+0:42
Finish
26.22 mi12:48:022:44:276:176:30
6:23
-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

6:03 /mi

Average Pace

6:17 /mi

Slowest Pace

7:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:35:16

94% of race

Time at Steady Pace

6:41

4% of race

Time at Slower Pace

2:30

2% of race

Average Pace: 6:16 /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 mi10:22:5119:166:1219:16
6:12
#1861
10K
6.21 mi10:42:0738:326:1219:16
6:12
#1868
15K
9.32 mi11:01:2357:486:1219:16
6:12
#1852
20K
12.43 mi11:20:271:16:526:1119:04
6:08
#1690
Half
13.11 mi11:24:351:21:006:114:08
6:03
#1670
25K
15.53 mi11:39:301:35:556:1014:55
6:09
#1567
30K
18.64 mi11:59:011:55:266:1219:31
6:17
#1448
20M
20.00 mi12:07:442:04:096:128:43
6:25
#1413
21M
21.00 mi12:14:252:10:506:146:41
6:41
#1372
35K
21.75 mi12:19:092:15:346:144:44
6:19
#1364
23M
23.00 mi12:27:042:23:296:147:55
6:19
#1306
24M
24.00 mi12:33:262:29:516:156:22
6:22
#1299
40K
24.85 mi12:39:022:35:276:155:36
6:33
#1302
25.2M
25.20 mi12:41:322:37:576:162:30
7:15
#1310
Finish
26.22 mi12:48:022:44:276:176:30
6:23
#1313
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi1861176717671863(Top 7%)1774(Top 11%)1774(Top 31%)
10K6.21 mi3.10 mi1868-71777-101777-101908(Top 7%)1814(Top 11%)1814(Top 32%)
15K9.32 mi3.11 mi1852+161763+141763+141863(Top 7%)1774(Top 11%)1774(Top 31%)
20K12.43 mi3.11 mi1690+1621605+1581605+1581296(Top 5%)1226(Top 8%)1226(Top 22%)
Half13.11 mi0.68 mi1670+201585+201585+201330(Top 5%)1262(Top 8%)1262(Top 22%)
25K15.53 mi2.42 mi1567+1031485+1001485+1001277(Top 4%)1208(Top 8%)1208(Top 21%)
30K18.64 mi3.11 mi1448+1191370+1151370+1151143(Top 4%)1077(Top 7%)1077(Top 19%)
20M20.00 mi1.36 mi1413+351333+371333+371276(Top 4%)1204(Top 7%)1204(Top 21%)
21M21.00 mi1.00 mi1372+411294+391294+391140(Top 4%)1079(Top 7%)1079(Top 19%)
35K21.75 mi0.75 mi1364+81286+81286+81675(Top 6%)1569(Top 10%)1569(Top 28%)
23M23.00 mi1.25 mi1306+581230+561230+56947(Top 3%)891(Top 6%)891(Top 16%)
24M24.00 mi1.00 mi1299+71223+71223+71512(Top 5%)1411(Top 9%)1411(Top 25%)
40K24.85 mi0.85 mi1302-31226-31226-31759(Top 6%)1622(Top 10%)1622(Top 29%)
25.2M25.20 mi0.35 mi1310-81234-81234-82257(Top 8%)2010(Top 12%)2010(Top 36%)
Finish26.22 mi1.02 mi1313-31235-11235-12178(Top 8%)1991(Top 12%)1991(Top 35%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 7%
×21stories
+97ft-345ft

Overall

1863

Males

1774

M18-39

1774

5K→10K

3.1 - 6.2 mi

Top 7%
×5stories
+79ft-138ft

Overall

1908

Males

1814

M18-39

1814

10K→15K

6.2 - 9.3 mi

Top 7%
×3stories
+67ft-78ft

Overall

1863

Males

1774

M18-39

1774

15K→20K

9.3 - 12.4 mi

Top 5%
×5stories
+106ft-86ft

Overall

1296

Males

1226

M18-39

1226

20K→Half

12.4 - 13.1 mi

Top 5%
×2stories
+19ft-37ft

Overall

1330

Males

1262

M18-39

1262

Half→25K

13.1 - 15.5 mi

Top 4%
×4stories
+66ft-88ft

Overall

1277

Males

1208

M18-39

1208

25K→30K

15.5 - 18.6 mi

Top 4%
×9stories
+181ft-148ft

Overall

1143

Males

1077

M18-39

1077

30K→20M

18.6 - 20.0 mi

Top 4%
×5stories
+64ft-50ft

Overall

1276

Males

1204

M18-39

1204

20M→21M

20.0 - 21.0 mi

Top 4%
×8stories
+106ft-24ft

Overall

1140

Males

1079

M18-39

1079

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1675

Males

1569

M18-39

1569

35K→23M

21.8 - 23.0 mi

Top 3%
×5stories
+23ft-63ft

Overall

947

Males

891

M18-39

891

23M→24M

23.0 - 24.0 mi

Top 5%
×6stories
+12ft-82ft

Overall

1512

Males

1411

M18-39

1411

24M→40K

24.0 - 24.9 mi

Top 6%
×1story
+6ft-20ft

Overall

1759

Males

1622

M18-39

1622

40K→25.2M

24.9 - 25.2 mi

Top 8%
×1story
+13ft-16ft

Overall

2257

Males

2010

M18-39

2010

25.2M→Finish

25.2 - 26.2 mi

Top 8%
×2stories
+22ft-21ft

Overall

2178

Males

1991

M18-39

1991

Passing Analysis

Category:
Athletes Passed
843
Passed By
295
Net Change
+548
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#1861
5K → 10K97104-7#1861#1868
10K → 15K6044+16#1868#1852
15K → 20K1642+162#1852#1690
20K → Half255+20#1690#1670
Half → 25K1052+103#1670#1567
25K → 30K13314+119#1567#1448
30K → 20M4914+35#1448#1413
20M → 21M5110+41#1413#1372
21M → 35K2214+8#1372#1364
35K → 23M668+58#1364#1306
23M → 24M2821+7#1306#1299
24M → 40K1720-3#1299#1302
40K → 25.2M513-8#1302#1310
25.2M → Finish2124-3#1310#1313
TOTALS843295+548
📊

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