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BOSTON MARATHON 2025

Christopher O'Brien

Bib: 27746•M

MA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M45-49)
#0 / 2386
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
9:46/mi
30:22
↑ 97↓ 3451.5%
10K· 6.21 mi
9:40/mi
1:00:24
↑ 79↓ 1380.4%
15K· 9.32 mi
9:45/mi
1:30:42
↑ 67↓ 78
20K· 12.43 mi
10:40/mi
2:03:49
↑ 106↓ 860.1%
Half· 13.11 mi
10:08/mi
2:10:44
↑ 19↓ 370.5%
25K· 15.53 mi
12:55/mi
2:42:03
↑ 66↓ 880.2%
30K· 18.64 mi
15:15/mi
3:29:25
↑ 181↓ 1480.2%
20M
16:29/mi
3:51:49
↑ 64↓ 500.2%
21M
14:51/mi
4:06:40
↑ 106↓ 241.6%
35K· 21.75 mi
15:14/mi
4:18:04
↑ 17↓ 861.7%
23M
15:41/mi
4:37:42
↑ 23↓ 630.6%
24M
13:19/mi
4:51:01
↓ 821.3%
40K· 24.85 mi
13:19/mi
5:02:24
↓ 200.3%
25.2M
20:06/mi
5:09:20
↑ 13↓ 160.2%
Finish· 26.22 mi
11:57/mi
5:21:31
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:10:44
Pace9:58 /mi
2nd Half
Distance13.11 mi
Time3:10:47
Pace14:33 /mi
📊Positive Split: 45.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:2730:229:4630:22
9:46
-
10K
6.21 mi12:17:291:00:249:4330:02
9:40
-0:06
15K
9.32 mi12:47:471:30:429:4430:18
9:45
+0:05
20K
12.43 mi13:20:542:03:499:5833:07
10:40
+0:55
Half
13.11 mi13:27:492:10:449:586:55
10:08
-0:32
25K
15.53 mi13:59:082:42:0310:2631:19
12:55
+2:47
30K
18.64 mi14:46:303:29:2511:1447:22
15:15
+2:20
20M
20.00 mi15:08:543:51:4911:3522:24
16:29
+1:14
21M
21.00 mi15:23:454:06:4011:4514:51
14:51
-1:38
35K
21.75 mi15:35:094:18:0411:5211:24
15:14
+0:23
23M
23.00 mi15:54:474:37:4212:0419:38
15:41
+0:27
24M
24.00 mi16:08:064:51:0112:0813:19
13:19
-2:22
40K
24.85 mi16:19:295:02:2412:1011:23
13:19
0:00
25.2M
25.20 mi16:26:255:09:2012:176:56
20:06
+6:47
Finish
26.22 mi16:38:365:21:3112:1612:11
11:57
-8:09

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

9:40 /mi

Average Pace

12:16 /mi

Slowest Pace

20:06 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:10:44

41% of race

Time at Steady Pace

1:08:12

21% of race

Time at Slower Pace

2:02:35

38% of race

Average Pace: 12:16 /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 mi11:47:2730:229:4630:22
9:46
#25024
10K
6.21 mi12:17:291:00:249:4330:02
9:40
#24780
15K
9.32 mi12:47:471:30:429:4430:18
9:45
#24655
20K
12.43 mi13:20:542:03:499:5833:07
10:40
#24915
Half
13.11 mi13:27:492:10:449:586:55
10:08
#24933
25K
15.53 mi13:59:082:42:0310:2631:19
12:55
#25579
30K
18.64 mi14:46:303:29:2511:1447:22
15:15
#26440
20M
20.00 mi15:08:543:51:4911:3522:24
16:29
#26761
21M
21.00 mi15:23:454:06:4011:4514:51
14:51
#26799
35K
21.75 mi15:35:094:18:0411:5211:24
15:14
#26912
23M
23.00 mi15:54:474:37:4212:0419:38
15:41
#27042
24M
24.00 mi16:08:064:51:0112:0813:19
13:19
#27051
40K
24.85 mi16:19:295:02:2412:1011:23
13:19
#27044
25.2M
25.20 mi16:26:255:09:2012:176:56
20:06
#27121
Finish
26.22 mi16:38:365:21:3112:1612:11
11:57
#27114
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi25024147401474024440(Top 86%)14461(Top 90%)14461(Top 606%)
10K6.21 mi3.10 mi24780+24414612+12814612+12824524(Top 86%)14486(Top 90%)14486(Top 607%)
15K9.32 mi3.11 mi24655+12514551+6114551+6124440(Top 86%)14461(Top 90%)14461(Top 606%)
20K12.43 mi3.11 mi24915-26014662-11114662-11125474(Top 90%)14895(Top 92%)14895(Top 624%)
Half13.11 mi0.68 mi24933-1814667-514667-525126(Top 88%)14735(Top 91%)14735(Top 618%)
25K15.53 mi2.42 mi25579-64614954-28714954-28727235(Top 96%)15604(Top 97%)15604(Top 654%)
30K18.64 mi3.11 mi26440-86115303-34915303-34928124(Top 99%)15949(Top 99%)15949(Top 668%)
20M20.00 mi1.36 mi26761-32115426-12315426-12328250(Top 99%)16009(Top 99%)16009(Top 671%)
21M21.00 mi1.00 mi26799-3815434-815434-827029(Top 95%)15379(Top 95%)15379(Top 645%)
35K21.75 mi0.75 mi26912-11315485-5115485-5128119(Top 99%)15927(Top 99%)15927(Top 668%)
23M23.00 mi1.25 mi27042-13015524-3915524-3928100(Top 99%)15902(Top 99%)15902(Top 666%)
24M24.00 mi1.00 mi27051-915518+615518+627156(Top 96%)15369(Top 95%)15369(Top 644%)
40K24.85 mi0.85 mi27044+715509+915509+926606(Top 94%)15090(Top 94%)15090(Top 632%)
25.2M25.20 mi0.35 mi27121-7715539-3015539-3028360(Top 100%)16072(Top 100%)16072(Top 674%)
Finish26.22 mi1.02 mi27114+715531+815531+826741(Top 94%)15176(Top 94%)15176(Top 636%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 86%
×21story building
+97ft-345ft

Overall

24440

Males

14461

M45-49

14461

5K→10K

3.1 - 6.2 mi

Top 86%
×5story building
+79ft-138ft

Overall

24524

Males

14486

M45-49

14486

10K→15K

6.2 - 9.3 mi

Top 86%
×3story building
+67ft-78ft

Overall

24440

Males

14461

M45-49

14461

15K→20K

9.3 - 12.4 mi

Top 90%
×5story building
+106ft-86ft

Overall

25474

Males

14895

M45-49

14895

20K→Half

12.4 - 13.1 mi

Top 88%
×2story building
+19ft-37ft

Overall

25126

Males

14735

M45-49

14735

Half→25K

13.1 - 15.5 mi

Top 96%
×4story building
+66ft-88ft

Overall

27235

Males

15604

M45-49

15604

25K→30K

15.5 - 18.6 mi

Top 99%
×9story building
+181ft-148ft

Overall

28124

Males

15949

M45-49

15949

30K→20M

18.6 - 20.0 mi

Top 99%
×5story building
+64ft-50ft

Overall

28250

Males

16009

M45-49

16009

20M→21M

20.0 - 21.0 mi

Top 95%
×8story building
+106ft-24ft

Overall

27029

Males

15379

M45-49

15379

21M→35K

21.0 - 21.8 mi

Top 99%
×7story building
+17ft-86ft

Overall

28119

Males

15927

M45-49

15927

35K→23M

21.8 - 23.0 mi

Top 99%
×5story building
+23ft-63ft

Overall

28100

Males

15902

M45-49

15902

23M→24M

23.0 - 24.0 mi

Top 96%
×6story building
+12ft-82ft

Overall

27156

Males

15369

M45-49

15369

24M→40K

24.0 - 24.9 mi

Top 94%
×1story
+6ft-20ft

Overall

26606

Males

15090

M45-49

15090

40K→25.2M

24.9 - 25.2 mi

Top 100%
×1story
+13ft-16ft

Overall

28360

Males

16072

M45-49

16072

25.2M→Finish

25.2 - 26.2 mi

Top 94%
×2story building
+22ft-21ft

Overall

26741

Males

15176

M45-49

15176

Passing Analysis

Category:
Athletes Passed
741
Passed By
2831
Net Change
-2090
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25024
5K → 10K34197+244#25024#24780
10K → 15K20277+125#24780#24655
15K → 20K62322-260#24655#24915
20K → Half2745-18#24915#24933
Half → 25K9655-646#24933#25579
25K → 30K5866-861#25579#26440
30K → 20M2323-321#26440#26761
20M → 21M1654-38#26761#26799
21M → 35K3116-113#26799#26912
35K → 23M7137-130#26912#27042
23M → 24M1928-9#27042#27051
24M → 40K2821+7#27051#27044
40K → 25.2M077-77#27044#27121
25.2M → Finish2013+7#27121#27114
TOTALS7412831-2090
📊

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