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BOSTON MARATHON 2025

David Pack

Bib: 5040•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 21%
Gender (Male)
#0 / 16105
Top 33%
Masters (Masters Men)
#0 / 10463
Top 19%
Division (M45-49)
#0 / 2386
Top 25%
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
6:38/mi
20:37
↑ 97↓ 3451.5%
10K· 6.21 mi
6:45/mi
41:34
↑ 79↓ 1380.4%
15K· 9.32 mi
6:47/mi
1:02:40
↑ 67↓ 78
20K· 12.43 mi
6:53/mi
1:24:02
↑ 106↓ 860.1%
Half· 13.11 mi
6:47/mi
1:28:40
↑ 19↓ 370.5%
25K· 15.53 mi
6:57/mi
1:45:32
↑ 66↓ 880.2%
30K· 18.64 mi
7:12/mi
2:07:55
↑ 181↓ 1480.2%
20M
7:30/mi
2:18:06
↑ 64↓ 500.2%
21M
7:59/mi
2:26:05
↑ 106↓ 241.6%
35K· 21.75 mi
7:08/mi
2:31:25
↑ 17↓ 861.7%
23M
7:37/mi
2:40:57
↑ 23↓ 630.6%
24M
7:27/mi
2:48:24
↓ 821.3%
40K· 24.85 mi
7:45/mi
2:55:02
↓ 200.3%
25.2M
8:27/mi
2:57:57
↑ 13↓ 160.2%
Finish· 26.22 mi
7:38/mi
3:05:44
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:28:40
Pace6:46 /mi
2nd Half
Distance13.11 mi
Time1:37:04
Pace7:24 /mi
📊Positive Split: 9.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:25:1820:376:3820:37
6:38
-
10K
6.21 mi10:46:1541:346:4120:57
6:45
+0:07
15K
9.32 mi11:07:211:02:406:4321:06
6:47
+0:02
20K
12.43 mi11:28:431:24:026:4621:22
6:53
+0:06
Half
13.11 mi11:33:211:28:406:464:38
6:47
-0:06
25K
15.53 mi11:50:131:45:326:4816:52
6:57
+0:10
30K
18.64 mi12:12:362:07:556:5222:23
7:12
+0:15
20M
20.00 mi12:22:472:18:066:5410:11
7:30
+0:18
21M
21.00 mi12:30:462:26:056:577:59
7:59
+0:29
35K
21.75 mi12:36:062:31:256:585:20
7:08
-0:51
23M
23.00 mi12:45:382:40:577:009:32
7:37
+0:29
24M
24.00 mi12:53:052:48:247:017:27
7:27
-0:10
40K
24.85 mi12:59:432:55:027:036:38
7:45
+0:18
25.2M
25.20 mi13:02:382:57:577:042:55
8:27
+0:42
Finish
26.22 mi13:10:253:05:447:057:47
7:38
-0:49

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

6:38 /mi

Average Pace

7:05 /mi

Slowest Pace

8:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:28:40

48% of race

Time at Steady Pace

52:02

28% of race

Time at Slower Pace

45:02

24% of race

Average Pace: 7:05 /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 mi10:25:1820:376:3820:37
6:38
#4899
10K
6.21 mi10:46:1541:346:4120:57
6:45
#5264
15K
9.32 mi11:07:211:02:406:4321:06
6:47
#5485
20K
12.43 mi11:28:431:24:026:4621:22
6:53
#5591
Half
13.11 mi11:33:211:28:406:464:38
6:47
#5608
25K
15.53 mi11:50:131:45:326:4816:52
6:57
#5659
30K
18.64 mi12:12:362:07:556:5222:23
7:12
#5686
20M
20.00 mi12:22:472:18:066:5410:11
7:30
#5776
21M
21.00 mi12:30:462:26:056:577:59
7:59
#5791
35K
21.75 mi12:36:062:31:256:585:20
7:08
#5781
23M
23.00 mi12:45:382:40:577:009:32
7:37
#5788
24M
24.00 mi12:53:052:48:247:017:27
7:27
#5791
40K
24.85 mi12:59:432:55:027:036:38
7:45
#5837
25.2M
25.20 mi13:02:382:57:577:042:55
8:27
#5847
Finish
26.22 mi13:10:253:05:447:057:47
7:38
#5911
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi4899458445845994(Top 21%)5448(Top 34%)5448(Top 228%)
10K6.21 mi3.10 mi5264-3654892-3084892-3085751(Top 20%)5267(Top 33%)5267(Top 221%)
15K9.32 mi3.11 mi5485-2215070-1785070-1785994(Top 21%)5448(Top 34%)5448(Top 228%)
20K12.43 mi3.11 mi5591-1065143-735143-736009(Top 21%)5442(Top 34%)5442(Top 228%)
Half13.11 mi0.68 mi5608-175153-105153-106024(Top 21%)5445(Top 34%)5445(Top 228%)
25K15.53 mi2.42 mi5659-515194-415194-416018(Top 21%)5409(Top 34%)5409(Top 227%)
30K18.64 mi3.11 mi5686-275186+85186+85916(Top 21%)5251(Top 33%)5251(Top 220%)
20M20.00 mi1.36 mi5776-905250-645250-646925(Top 24%)5778(Top 36%)5778(Top 242%)
21M21.00 mi1.00 mi5791-155251-15251-17227(Top 25%)5801(Top 36%)5801(Top 243%)
35K21.75 mi0.75 mi5781+105230+215230+216111(Top 22%)5133(Top 32%)5133(Top 215%)
23M23.00 mi1.25 mi5788-75216+145216+147315(Top 26%)5755(Top 36%)5755(Top 241%)
24M24.00 mi1.00 mi5791-35203+135203+137324(Top 26%)5711(Top 35%)5711(Top 239%)
40K24.85 mi0.85 mi5837-465222-195222-198425(Top 30%)6199(Top 38%)6199(Top 260%)
25.2M25.20 mi0.35 mi5847-105226-45226-48432(Top 30%)6117(Top 38%)6117(Top 256%)
Finish26.22 mi1.02 mi5911-645252-265252-2610174(Top 36%)7060(Top 44%)7060(Top 296%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21story building
+97ft-345ft

Overall

5994

Males

5448

M45-49

5448

5K→10K

3.1 - 6.2 mi

Top 20%
×5story building
+79ft-138ft

Overall

5751

Males

5267

M45-49

5267

10K→15K

6.2 - 9.3 mi

Top 21%
×3story building
+67ft-78ft

Overall

5994

Males

5448

M45-49

5448

15K→20K

9.3 - 12.4 mi

Top 21%
×5story building
+106ft-86ft

Overall

6009

Males

5442

M45-49

5442

20K→Half

12.4 - 13.1 mi

Top 21%
×2story building
+19ft-37ft

Overall

6024

Males

5445

M45-49

5445

Half→25K

13.1 - 15.5 mi

Top 21%
×4story building
+66ft-88ft

Overall

6018

Males

5409

M45-49

5409

25K→30K

15.5 - 18.6 mi

Top 21%
×9story building
+181ft-148ft

Overall

5916

Males

5251

M45-49

5251

30K→20M

18.6 - 20.0 mi

Top 24%
×5story building
+64ft-50ft

Overall

6925

Males

5778

M45-49

5778

20M→21M

20.0 - 21.0 mi

Top 25%
×8story building
+106ft-24ft

Overall

7227

Males

5801

M45-49

5801

21M→35K

21.0 - 21.8 mi

Top 22%
×7story building
+17ft-86ft

Overall

6111

Males

5133

M45-49

5133

35K→23M

21.8 - 23.0 mi

Top 26%
×5story building
+23ft-63ft

Overall

7315

Males

5755

M45-49

5755

23M→24M

23.0 - 24.0 mi

Top 26%
×6story building
+12ft-82ft

Overall

7324

Males

5711

M45-49

5711

24M→40K

24.0 - 24.9 mi

Top 30%
×1story
+6ft-20ft

Overall

8425

Males

6199

M45-49

6199

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

8432

Males

6117

M45-49

6117

25.2M→Finish

25.2 - 26.2 mi

Top 36%
×2story building
+22ft-21ft

Overall

10174

Males

7060

M45-49

7060

Passing Analysis

Category:
Athletes Passed
904
Passed By
1916
Net Change
-1012
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#4899
5K → 10K69434-365#4899#5264
10K → 15K56277-221#5264#5485
15K → 20K96202-106#5485#5591
20K → Half2138-17#5591#5608
Half → 25K101152-51#5608#5659
25K → 30K174201-27#5659#5686
30K → 20M42132-90#5686#5776
20M → 21M5873-15#5776#5791
21M → 35K4535+10#5791#5781
35K → 23M8491-7#5781#5788
23M → 24M5861-3#5788#5791
24M → 40K3480-46#5791#5837
40K → 25.2M2434-10#5837#5847
25.2M → Finish42106-64#5847#5911
TOTALS9041916-1012
📊

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