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BOSTON MARATHON 2025

Daniel O'Connell

Bib: 19275•M

DE

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 35%
Gender (Male)
#0 / 16105
Top 48%
Masters (Masters Men)
#0 / 10463
Top 37%
Division (M55-59)
#0 / 1648
Top 19%
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
7:33/mi
23:27
↑ 97↓ 3451.5%
10K· 6.21 mi
7:33/mi
46:55
↑ 79↓ 1380.4%
15K· 9.32 mi
7:36/mi
1:10:31
↑ 67↓ 78
20K· 12.43 mi
7:35/mi
1:34:04
↑ 106↓ 860.1%
Half· 13.11 mi
7:27/mi
1:39:09
↑ 19↓ 370.5%
25K· 15.53 mi
7:35/mi
1:57:33
↑ 66↓ 880.2%
30K· 18.64 mi
7:42/mi
2:21:29
↑ 181↓ 1480.2%
20M
7:39/mi
2:31:53
↑ 64↓ 500.2%
21M
8:10/mi
2:40:03
↑ 106↓ 241.6%
35K· 21.75 mi
7:29/mi
2:45:39
↑ 17↓ 861.7%
23M
7:50/mi
2:55:27
↑ 23↓ 630.6%
24M
7:32/mi
3:02:59
↓ 821.3%
40K· 24.85 mi
7:40/mi
3:09:32
↓ 200.3%
25.2M
8:16/mi
3:12:23
↑ 13↓ 160.2%
Finish· 26.22 mi
7:02/mi
3:19:33
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:09
Pace7:34 /mi
2nd Half
Distance13.11 mi
Time1:40:24
Pace7:40 /mi
📊Positive Split: 1.3% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:15:3223:277:3323:27
7:33
-
10K
6.21 mi11:39:0046:557:3323:28
7:33
0:00
15K
9.32 mi12:02:361:10:317:3423:36
7:36
+0:03
20K
12.43 mi12:26:091:34:047:3423:33
7:35
-0:01
Half
13.11 mi12:31:141:39:097:345:05
7:27
-0:08
25K
15.53 mi12:49:381:57:337:3418:24
7:35
+0:08
30K
18.64 mi13:13:342:21:297:3523:56
7:42
+0:07
20M
20.00 mi13:23:582:31:537:3610:24
7:39
-0:03
21M
21.00 mi13:32:082:40:037:378:10
8:10
+0:31
35K
21.75 mi13:37:442:45:397:375:36
7:29
-0:41
23M
23.00 mi13:47:322:55:277:389:48
7:50
+0:21
24M
24.00 mi13:55:043:02:597:377:32
7:32
-0:18
40K
24.85 mi14:01:373:09:327:386:33
7:40
+0:08
25.2M
25.20 mi14:04:283:12:237:382:51
8:16
+0:36
Finish
26.22 mi14:11:383:19:337:377:10
7:02
-1:14

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

7:02 /mi

Average Pace

7:37 /mi

Slowest Pace

8:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:58:44

90% of race

Time at Steady Pace

20:49

10% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:37 /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 mi11:15:3223:277:3323:27
7:33
#12641
10K
6.21 mi11:39:0046:557:3323:28
7:33
#12568
15K
9.32 mi12:02:361:10:317:3423:36
7:36
#12550
20K
12.43 mi12:26:091:34:047:3423:33
7:35
#12231
Half
13.11 mi12:31:141:39:097:345:05
7:27
#12180
25K
15.53 mi12:49:381:57:337:3418:24
7:35
#11895
30K
18.64 mi13:13:342:21:297:3523:56
7:42
#11353
20M
20.00 mi13:23:582:31:537:3610:24
7:39
#11032
21M
21.00 mi13:32:082:40:037:378:10
8:10
#10846
35K
21.75 mi13:37:442:45:397:375:36
7:29
#10743
23M
23.00 mi13:47:322:55:277:389:48
7:50
#10582
24M
24.00 mi13:55:043:02:597:377:32
7:32
#10427
40K
24.85 mi14:01:373:09:327:386:33
7:40
#10280
25.2M
25.20 mi14:04:283:12:237:382:51
8:16
#10211
Finish
26.22 mi14:11:383:19:337:377:10
7:02
#10013
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi126419475947512550(Top 44%)9320(Top 58%)9320(Top 566%)
10K6.21 mi3.10 mi12568+739420+559420+5512572(Top 44%)9401(Top 58%)9401(Top 570%)
15K9.32 mi3.11 mi12550+189381+399381+3912550(Top 44%)9320(Top 58%)9320(Top 566%)
20K12.43 mi3.11 mi12231+3199200+1819200+18111419(Top 40%)8693(Top 54%)8693(Top 527%)
Half13.11 mi0.68 mi12180+519167+339167+3311234(Top 40%)8645(Top 54%)8645(Top 525%)
25K15.53 mi2.42 mi11895+2858994+1738994+17310658(Top 38%)8220(Top 51%)8220(Top 499%)
30K18.64 mi3.11 mi11353+5428674+3208674+3209214(Top 32%)7263(Top 45%)7263(Top 441%)
20M20.00 mi1.36 mi11032+3218478+1968478+1968055(Top 28%)6482(Top 40%)6482(Top 393%)
21M21.00 mi1.00 mi10846+1868347+1318347+1318372(Top 29%)6472(Top 40%)6472(Top 393%)
35K21.75 mi0.75 mi10743+1038282+658282+658509(Top 30%)6601(Top 41%)6601(Top 401%)
23M23.00 mi1.25 mi10582+1618164+1188164+1188767(Top 31%)6592(Top 41%)6592(Top 400%)
24M24.00 mi1.00 mi10427+1558052+1128052+1127938(Top 28%)6082(Top 38%)6082(Top 369%)
40K24.85 mi0.85 mi10280+1477936+1167936+1167827(Top 28%)5902(Top 37%)5902(Top 358%)
25.2M25.20 mi0.35 mi10211+697888+487888+487447(Top 26%)5612(Top 35%)5612(Top 341%)
Finish26.22 mi1.02 mi10013+1987761+1277761+1275956(Top 21%)4714(Top 29%)4714(Top 286%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 44%
×21story building
+97ft-345ft

Overall

12550

Males

9320

M55-59

9320

5K→10K

3.1 - 6.2 mi

Top 44%
×5story building
+79ft-138ft

Overall

12572

Males

9401

M55-59

9401

10K→15K

6.2 - 9.3 mi

Top 44%
×3story building
+67ft-78ft

Overall

12550

Males

9320

M55-59

9320

15K→20K

9.3 - 12.4 mi

Top 40%
×5story building
+106ft-86ft

Overall

11419

Males

8693

M55-59

8693

20K→Half

12.4 - 13.1 mi

Top 40%
×2story building
+19ft-37ft

Overall

11234

Males

8645

M55-59

8645

Half→25K

13.1 - 15.5 mi

Top 38%
×4story building
+66ft-88ft

Overall

10658

Males

8220

M55-59

8220

25K→30K

15.5 - 18.6 mi

Top 32%
×9story building
+181ft-148ft

Overall

9214

Males

7263

M55-59

7263

30K→20M

18.6 - 20.0 mi

Top 28%
×5story building
+64ft-50ft

Overall

8055

Males

6482

M55-59

6482

20M→21M

20.0 - 21.0 mi

Top 29%
×8story building
+106ft-24ft

Overall

8372

Males

6472

M55-59

6472

21M→35K

21.0 - 21.8 mi

Top 30%
×7story building
+17ft-86ft

Overall

8509

Males

6601

M55-59

6601

35K→23M

21.8 - 23.0 mi

Top 31%
×5story building
+23ft-63ft

Overall

8767

Males

6592

M55-59

6592

23M→24M

23.0 - 24.0 mi

Top 28%
×6story building
+12ft-82ft

Overall

7938

Males

6082

M55-59

6082

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7827

Males

5902

M55-59

5902

40K→25.2M

24.9 - 25.2 mi

Top 26%
×1story
+13ft-16ft

Overall

7447

Males

5612

M55-59

5612

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2story building
+22ft-21ft

Overall

5956

Males

4714

M55-59

4714

Passing Analysis

Category:
Athletes Passed
3288*
Passed By
660
Net Change
+2628
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12641
5K → 10K322249+73#12641#12568
10K → 15K205187+18#12568#12550
15K → 20K36344+319#12550#12231
20K → Half6312+51#12231#12180
Half → 25K32136+285#12180#11895
25K → 30K56422+542#11895#11353
30K → 20M3265+321#11353#11032
20M → 21M20620+186#11032#10846
21M → 35K11411+103#10846#10743
35K → 23M18928+161#10743#10582
23M → 24M17116+155#10582#10427
24M → 40K15912+147#10427#10280
40K → 25.2M789+69#10280#10211
25.2M → Finish207*9+198#10211#10013
TOTALS3288*660+2628

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

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