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BOSTON MARATHON 2025

Christopher O'Connell

Bib: 29735•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

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
9:21/mi
29:04
↑ 97↓ 3451.5%
10K· 6.21 mi
8:36/mi
55:48
↑ 79↓ 1380.4%
15K· 9.32 mi
8:31/mi
1:22:16
↑ 67↓ 78
20K· 12.43 mi
8:47/mi
1:49:33
↑ 106↓ 860.1%
Half· 13.11 mi
8:49/mi
1:55:34
↑ 19↓ 370.5%
25K· 15.53 mi
9:32/mi
2:18:41
↑ 66↓ 880.2%
30K· 18.64 mi
9:40/mi
2:48:43
↑ 181↓ 1480.2%
20M
9:56/mi
3:02:13
↑ 64↓ 500.2%
21M
11:04/mi
3:13:17
↑ 106↓ 241.6%
35K· 21.75 mi
9:35/mi
3:20:27
↑ 17↓ 861.7%
23M
10:13/mi
3:33:14
↑ 23↓ 630.6%
24M
10:24/mi
3:43:38
↓ 821.3%
40K· 24.85 mi
10:00/mi
3:52:11
↓ 200.3%
25.2M
10:55/mi
3:55:57
↑ 13↓ 160.2%
Finish· 26.22 mi
10:05/mi
4:06:14
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:34
Pace8:49 /mi
2nd Half
Distance13.11 mi
Time2:10:40
Pace9:58 /mi
📊Positive Split: 13.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:1429:049:2129:04
9:21
-
10K
6.21 mi12:13:5855:488:5926:44
8:36
-0:45
15K
9.32 mi12:40:261:22:168:5026:28
8:31
-0:05
20K
12.43 mi13:07:431:49:338:4927:17
8:47
+0:16
Half
13.11 mi13:13:441:55:348:496:01
8:49
+0:02
25K
15.53 mi13:36:512:18:418:5623:07
9:32
+0:43
30K
18.64 mi14:06:532:48:439:0330:02
9:40
+0:08
20M
20.00 mi14:20:233:02:139:0713:30
9:56
+0:16
21M
21.00 mi14:31:273:13:179:1211:04
11:04
+1:08
35K
21.75 mi14:38:373:20:279:137:10
9:35
-1:29
23M
23.00 mi14:51:243:33:149:1612:47
10:13
+0:38
24M
24.00 mi15:01:483:43:389:1910:24
10:24
+0:11
40K
24.85 mi15:10:213:52:119:208:33
10:00
-0:24
25.2M
25.20 mi15:14:073:55:579:223:46
10:55
+0:55
Finish
26.22 mi15:24:244:06:149:2410:17
10:05
-0:50

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

8:31 /mi

Average Pace

9:24 /mi

Slowest Pace

11:04 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:26:30

35% of race

Time at Steady Pace

1:51:26

45% of race

Time at Slower Pace

48:18

20% of race

Average Pace: 9:23 /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 mi11:47:1429:049:2129:04
9:21
#23750
10K
6.21 mi12:13:5855:488:5926:44
8:36
#22348
15K
9.32 mi12:40:261:22:168:5026:28
8:31
#21404
20K
12.43 mi13:07:431:49:338:4927:17
8:47
#21004
Half
13.11 mi13:13:441:55:348:496:01
8:49
#21000
25K
15.53 mi13:36:512:18:418:5623:07
9:32
#21238
30K
18.64 mi14:06:532:48:439:0330:02
9:40
#21107
20M
20.00 mi14:20:233:02:139:0713:30
9:56
#21078
21M
21.00 mi14:31:273:13:179:1211:04
11:04
#21131
35K
21.75 mi14:38:373:20:279:137:10
9:35
#21109
23M
23.00 mi14:51:243:33:149:1612:47
10:13
#21101
24M
24.00 mi15:01:483:43:389:1910:24
10:24
#21201
40K
24.85 mi15:10:213:52:119:208:33
10:00
#21165
25.2M
25.20 mi15:14:073:55:579:223:46
10:55
#21143
Finish
26.22 mi15:24:244:06:149:2410:17
10:05
#21222
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi23750141281412819438(Top 68%)12249(Top 76%)12249(Top 217%)
10K6.21 mi3.10 mi22348+140213480+64813480+64820377(Top 72%)12644(Top 79%)12644(Top 224%)
15K9.32 mi3.11 mi21404+94413093+38713093+38719438(Top 68%)12249(Top 76%)12249(Top 217%)
20K12.43 mi3.11 mi21004+40012913+18012913+18019842(Top 70%)12391(Top 77%)12391(Top 220%)
Half13.11 mi0.68 mi21000+412912+112912+120977(Top 74%)12890(Top 80%)12890(Top 228%)
25K15.53 mi2.42 mi21238-23813007-9513007-9521968(Top 77%)13276(Top 82%)13276(Top 235%)
30K18.64 mi3.11 mi21107+13112907+10012907+10020590(Top 72%)12552(Top 78%)12552(Top 222%)
20M20.00 mi1.36 mi21078+2912872+3512872+3520709(Top 73%)12458(Top 77%)12458(Top 221%)
21M21.00 mi1.00 mi21131-5312884-1212884-1221574(Top 76%)12768(Top 79%)12768(Top 226%)
35K21.75 mi0.75 mi21109+2212857+2712857+2720601(Top 73%)12260(Top 76%)12260(Top 217%)
23M23.00 mi1.25 mi21101+812832+2512832+2521138(Top 74%)12460(Top 77%)12460(Top 221%)
24M24.00 mi1.00 mi21201-10012855-2312855-2322525(Top 79%)13067(Top 81%)13067(Top 232%)
40K24.85 mi0.85 mi21165+3612817+3812817+3820459(Top 72%)12024(Top 75%)12024(Top 213%)
25.2M25.20 mi0.35 mi21143+2212800+1712800+1720371(Top 72%)11971(Top 74%)11971(Top 212%)
Finish26.22 mi1.02 mi21222-7912822-2212822-2223185(Top 82%)13364(Top 83%)13364(Top 237%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21story building
+97ft-345ft

Overall

19438

Males

12249

M18-39

12249

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

20377

Males

12644

M18-39

12644

10K→15K

6.2 - 9.3 mi

Top 68%
×3story building
+67ft-78ft

Overall

19438

Males

12249

M18-39

12249

15K→20K

9.3 - 12.4 mi

Top 70%
×5story building
+106ft-86ft

Overall

19842

Males

12391

M18-39

12391

20K→Half

12.4 - 13.1 mi

Top 74%
×2story building
+19ft-37ft

Overall

20977

Males

12890

M18-39

12890

Half→25K

13.1 - 15.5 mi

Top 77%
×4story building
+66ft-88ft

Overall

21968

Males

13276

M18-39

13276

25K→30K

15.5 - 18.6 mi

Top 72%
×9story building
+181ft-148ft

Overall

20590

Males

12552

M18-39

12552

30K→20M

18.6 - 20.0 mi

Top 73%
×5story building
+64ft-50ft

Overall

20709

Males

12458

M18-39

12458

20M→21M

20.0 - 21.0 mi

Top 76%
×8story building
+106ft-24ft

Overall

21574

Males

12768

M18-39

12768

21M→35K

21.0 - 21.8 mi

Top 73%
×7story building
+17ft-86ft

Overall

20601

Males

12260

M18-39

12260

35K→23M

21.8 - 23.0 mi

Top 74%
×5story building
+23ft-63ft

Overall

21138

Males

12460

M18-39

12460

23M→24M

23.0 - 24.0 mi

Top 79%
×6story building
+12ft-82ft

Overall

22525

Males

13067

M18-39

13067

24M→40K

24.0 - 24.9 mi

Top 72%
×1story
+6ft-20ft

Overall

20459

Males

12024

M18-39

12024

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

20371

Males

11971

M18-39

11971

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2story building
+22ft-21ft

Overall

23185

Males

13364

M18-39

13364

Passing Analysis

Category:
Athletes Passed
3675
Passed By
1147
Net Change
+2528
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23750
5K → 10K14064+1402#23750#22348
10K → 15K9495+944#22348#21404
15K → 20K42929+400#21404#21004
20K → Half4036+4#21004#21000
Half → 25K85323-238#21000#21238
25K → 30K263132+131#21238#21107
30K → 20M11182+29#21107#21078
20M → 21M73126-53#21078#21131
21M → 35K7048+22#21131#21109
35K → 23M9385+8#21109#21101
23M → 24M31131-100#21101#21201
24M → 40K7034+36#21201#21165
40K → 25.2M3513+22#21165#21143
25.2M → Finish2099-79#21143#21222
TOTALS36751147+2528
📊

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