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BOSTON MARATHON 2025

David O'Leary

Bib: 12509•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 28%
Gender (Male)
#0 / 16105
Top 41%
Masters (Masters Men)
#0 / 10463
Top 28%
Division (M45-49)
#0 / 2386
Top 40%
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
7:17/mi
22:38
↑ 97↓ 3451.5%
10K· 6.21 mi
7:05/mi
44:37
↑ 79↓ 1380.4%
15K· 9.32 mi
7:04/mi
1:06:35
↑ 67↓ 78
20K· 12.43 mi
7:09/mi
1:28:49
↑ 106↓ 860.1%
Half· 13.11 mi
7:05/mi
1:33:39
↑ 19↓ 370.5%
25K· 15.53 mi
7:09/mi
1:50:59
↑ 66↓ 880.2%
30K· 18.64 mi
7:33/mi
2:14:27
↑ 181↓ 1480.2%
20M
7:40/mi
2:24:52
↑ 64↓ 500.2%
21M
8:01/mi
2:32:53
↑ 106↓ 241.6%
35K· 21.75 mi
7:22/mi
2:38:24
↑ 17↓ 861.7%
23M
7:42/mi
2:48:03
↑ 23↓ 630.6%
24M
7:40/mi
2:55:43
↓ 821.3%
40K· 24.85 mi
7:44/mi
3:02:20
↓ 200.3%
25.2M
8:36/mi
3:05:18
↑ 13↓ 160.2%
Finish· 26.22 mi
7:29/mi
3:12:56
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:33:39
Pace7:09 /mi
2nd Half
Distance13.11 mi
Time1:39:17
Pace7:34 /mi
📊Positive Split: 6.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:3622:387:1722:38
7:17
-
10K
6.21 mi11:13:3544:377:1121:59
7:05
-0:12
15K
9.32 mi11:35:331:06:357:0921:58
7:04
-0:01
20K
12.43 mi11:57:471:28:497:0922:14
7:09
+0:05
Half
13.11 mi12:02:371:33:397:094:50
7:05
-0:04
25K
15.53 mi12:19:571:50:597:0917:20
7:09
+0:04
30K
18.64 mi12:43:252:14:277:1323:28
7:33
+0:24
20M
20.00 mi12:53:502:24:527:1510:25
7:40
+0:07
21M
21.00 mi13:01:512:32:537:178:01
8:01
+0:21
35K
21.75 mi13:07:222:38:247:175:31
7:22
-0:39
23M
23.00 mi13:17:012:48:037:189:39
7:42
+0:20
24M
24.00 mi13:24:412:55:437:197:40
7:40
-0:02
40K
24.85 mi13:31:183:02:207:206:37
7:44
+0:04
25.2M
25.20 mi13:34:163:05:187:212:58
8:36
+0:52
Finish
26.22 mi13:41:543:12:567:227:38
7:29
-1:07

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

7:04 /mi

Average Pace

7:22 /mi

Slowest Pace

8:36 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:28:21

46% of race

Time at Steady Pace

1:17:20

40% of race

Time at Slower Pace

27:15

14% of race

Average Pace: 7:21 /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 mi10:51:3622:387:1722:38
7:17
#10192
10K
6.21 mi11:13:3544:377:1121:59
7:05
#9281
15K
9.32 mi11:35:331:06:357:0921:58
7:04
#8862
20K
12.43 mi11:57:471:28:497:0922:14
7:09
#8512
Half
13.11 mi12:02:371:33:397:094:50
7:05
#8485
25K
15.53 mi12:19:571:50:597:0917:20
7:09
#8248
30K
18.64 mi12:43:252:14:277:1323:28
7:33
#8127
20M
20.00 mi12:53:502:24:527:1510:25
7:40
#8076
21M
21.00 mi13:01:512:32:537:178:01
8:01
#7961
35K
21.75 mi13:07:222:38:247:175:31
7:22
#7918
23M
23.00 mi13:17:012:48:037:189:39
7:42
#7852
24M
24.00 mi13:24:412:55:437:197:40
7:40
#7893
40K
24.85 mi13:31:183:02:207:206:37
7:44
#7861
25.2M
25.20 mi13:34:163:05:187:212:58
8:36
#7865
Finish
26.22 mi13:41:543:12:567:227:38
7:29
#7871
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi10192827482748116(Top 29%)7014(Top 44%)7014(Top 294%)
10K6.21 mi3.10 mi9281+9117765+5097765+5098456(Top 30%)7265(Top 45%)7265(Top 304%)
15K9.32 mi3.11 mi8862+4197503+2627503+2628116(Top 29%)7014(Top 44%)7014(Top 294%)
20K12.43 mi3.11 mi8512+3507266+2377266+2377856(Top 28%)6779(Top 42%)6779(Top 284%)
Half13.11 mi0.68 mi8485+277247+197247+198144(Top 29%)6983(Top 43%)6983(Top 293%)
25K15.53 mi2.42 mi8248+2377083+1647083+1647261(Top 26%)6295(Top 39%)6295(Top 264%)
30K18.64 mi3.11 mi8127+1216946+1376946+1378103(Top 29%)6647(Top 41%)6647(Top 279%)
20M20.00 mi1.36 mi8076+516882+646882+648109(Top 29%)6507(Top 40%)6507(Top 273%)
21M21.00 mi1.00 mi7961+1156779+1036779+1037423(Top 26%)5926(Top 37%)5926(Top 248%)
35K21.75 mi0.75 mi7918+436729+506729+507695(Top 27%)6112(Top 38%)6112(Top 256%)
23M23.00 mi1.25 mi7852+666647+826647+827924(Top 28%)6118(Top 38%)6118(Top 256%)
24M24.00 mi1.00 mi7893-416634+136634+138869(Top 31%)6576(Top 41%)6576(Top 276%)
40K24.85 mi0.85 mi7861+326591+436591+438330(Top 29%)6168(Top 38%)6168(Top 259%)
25.2M25.20 mi0.35 mi7865-46577+146577+149342(Top 33%)6594(Top 41%)6594(Top 276%)
Finish26.22 mi1.02 mi7871-66549+286549+289087(Top 32%)6481(Top 40%)6481(Top 272%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21story building
+97ft-345ft

Overall

8116

Males

7014

M45-49

7014

5K→10K

3.1 - 6.2 mi

Top 30%
×5story building
+79ft-138ft

Overall

8456

Males

7265

M45-49

7265

10K→15K

6.2 - 9.3 mi

Top 29%
×3story building
+67ft-78ft

Overall

8116

Males

7014

M45-49

7014

15K→20K

9.3 - 12.4 mi

Top 28%
×5story building
+106ft-86ft

Overall

7856

Males

6779

M45-49

6779

20K→Half

12.4 - 13.1 mi

Top 29%
×2story building
+19ft-37ft

Overall

8144

Males

6983

M45-49

6983

Half→25K

13.1 - 15.5 mi

Top 26%
×4story building
+66ft-88ft

Overall

7261

Males

6295

M45-49

6295

25K→30K

15.5 - 18.6 mi

Top 29%
×9story building
+181ft-148ft

Overall

8103

Males

6647

M45-49

6647

30K→20M

18.6 - 20.0 mi

Top 29%
×5story building
+64ft-50ft

Overall

8109

Males

6507

M45-49

6507

20M→21M

20.0 - 21.0 mi

Top 26%
×8story building
+106ft-24ft

Overall

7423

Males

5926

M45-49

5926

21M→35K

21.0 - 21.8 mi

Top 27%
×7story building
+17ft-86ft

Overall

7695

Males

6112

M45-49

6112

35K→23M

21.8 - 23.0 mi

Top 28%
×5story building
+23ft-63ft

Overall

7924

Males

6118

M45-49

6118

23M→24M

23.0 - 24.0 mi

Top 31%
×6story building
+12ft-82ft

Overall

8869

Males

6576

M45-49

6576

24M→40K

24.0 - 24.9 mi

Top 29%
×1story
+6ft-20ft

Overall

8330

Males

6168

M45-49

6168

40K→25.2M

24.9 - 25.2 mi

Top 33%
×1story
+13ft-16ft

Overall

9342

Males

6594

M45-49

6594

25.2M→Finish

25.2 - 26.2 mi

Top 32%
×2story building
+22ft-21ft

Overall

9087

Males

6481

M45-49

6481

Passing Analysis

Category:
Athletes Passed
3046*
Passed By
725
Net Change
+2321
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10192
5K → 10K940*29+911#10192#9281
10K → 15K44930+419#9281#8862
15K → 20K37626+350#8862#8512
20K → Half4619+27#8512#8485
Half → 25K25417+237#8485#8248
25K → 30K246125+121#8248#8127
30K → 20M12473+51#8127#8076
20M → 21M16045+115#8076#7961
21M → 35K7532+43#7961#7918
35K → 23M12761+66#7918#7852
23M → 24M59100-41#7852#7893
24M → 40K8250+32#7893#7861
40K → 25.2M3539-4#7861#7865
25.2M → Finish7379-6#7865#7871
TOTALS3046*725+2321

* 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