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BOSTON MARATHON 2025

Alex Dolwick

Bib: 5173•M

NC

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 13%
Gender (Male)
#0 / 16105
Top 22%
Division (M18-39)
#0 / 5642
Top 46%
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
6:22/mi
19:46
↑ 97↓ 3451.5%
10K· 6.21 mi
6:33/mi
40:08
↑ 79↓ 1380.4%
15K· 9.32 mi
6:41/mi
1:00:53
↑ 67↓ 78
20K· 12.43 mi
6:42/mi
1:21:41
↑ 106↓ 860.1%
Half· 13.11 mi
6:33/mi
1:26:09
↑ 19↓ 370.5%
25K· 15.53 mi
6:50/mi
1:42:43
↑ 66↓ 880.2%
30K· 18.64 mi
7:00/mi
2:04:28
↑ 181↓ 1480.2%
20M
6:55/mi
2:13:52
↑ 64↓ 500.2%
21M
6:30/mi
2:20:22
↑ 106↓ 241.6%
35K· 21.75 mi
6:28/mi
2:25:12
↑ 17↓ 861.7%
23M
6:59/mi
2:33:56
↑ 23↓ 630.6%
24M
7:10/mi
2:41:06
↓ 821.3%
40K· 24.85 mi
7:13/mi
2:47:16
↓ 200.3%
25.2M
7:41/mi
2:49:55
↑ 13↓ 160.2%
Finish· 26.22 mi
7:04/mi
2:57:07
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:09
Pace6:34 /mi
2nd Half
Distance13.11 mi
Time1:30:58
Pace6:56 /mi
📊Positive Split: 5.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:2819:466:2219:46
6:22
-
10K
6.21 mi10:43:5040:086:2820:22
6:33
+0:11
15K
9.32 mi11:04:351:00:536:3220:45
6:41
+0:08
20K
12.43 mi11:25:231:21:416:3420:48
6:42
+0:01
Half
13.11 mi11:29:511:26:096:344:28
6:33
-0:09
25K
15.53 mi11:46:251:42:436:3716:34
6:50
+0:17
30K
18.64 mi12:08:102:04:286:4121:45
7:00
+0:10
20M
20.00 mi12:17:342:13:526:429:24
6:55
-0:05
21M
21.00 mi12:24:042:20:226:416:30
6:30
-0:25
35K
21.75 mi12:28:542:25:126:414:50
6:28
-0:02
23M
23.00 mi12:37:382:33:566:428:44
6:59
+0:31
24M
24.00 mi12:44:482:41:066:437:10
7:10
+0:11
40K
24.85 mi12:50:582:47:166:446:10
7:13
+0:03
25.2M
25.20 mi12:53:372:49:556:452:39
7:41
+0:28
Finish
26.22 mi13:00:492:57:076:467:12
7:04
-0:37

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

6:22 /mi

Average Pace

6:46 /mi

Slowest Pace

7:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

55:56

32% of race

Time at Steady Pace

1:38:00

55% of race

Time at Slower Pace

23:11

13% of race

Average Pace: 6:45 /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 mi10:23:2819:466:2219:46
6:22
#2841
10K
6.21 mi10:43:5040:086:2820:22
6:33
#3469
15K
9.32 mi11:04:351:00:536:3220:45
6:41
#3899
20K
12.43 mi11:25:231:21:416:3420:48
6:42
#3961
Half
13.11 mi11:29:511:26:096:344:28
6:33
#3957
25K
15.53 mi11:46:251:42:436:3716:34
6:50
#4081
30K
18.64 mi12:08:102:04:286:4121:45
7:00
#4131
20M
20.00 mi12:17:342:13:526:429:24
6:55
#4060
21M
21.00 mi12:24:042:20:226:416:30
6:30
#3748
35K
21.75 mi12:28:542:25:126:414:50
6:28
#3673
23M
23.00 mi12:37:382:33:566:428:44
6:59
#3628
24M
24.00 mi12:44:482:41:066:437:10
7:10
#3704
40K
24.85 mi12:50:582:47:166:446:10
7:13
#3730
25.2M
25.20 mi12:53:372:49:556:452:39
7:41
#3730
Finish
26.22 mi13:00:492:57:076:467:12
7:04
#3765
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi2841270427044862(Top 17%)4533(Top 28%)4533(Top 80%)
10K6.21 mi3.10 mi3469-6283293-5893293-5894106(Top 14%)3860(Top 24%)3860(Top 68%)
15K9.32 mi3.11 mi3899-4303677-3843677-3844862(Top 17%)4533(Top 28%)4533(Top 80%)
20K12.43 mi3.11 mi3961-623730-533730-534374(Top 15%)4088(Top 25%)4088(Top 72%)
Half13.11 mi0.68 mi3957+43726+43726+43959(Top 14%)3723(Top 23%)3723(Top 66%)
25K15.53 mi2.42 mi4081-1243836-1103836-1105094(Top 18%)4669(Top 29%)4669(Top 83%)
30K18.64 mi3.11 mi4131-503871-353871-354668(Top 16%)4255(Top 26%)4255(Top 75%)
20M20.00 mi1.36 mi4060+713802+693802+693599(Top 13%)3315(Top 21%)3315(Top 59%)
21M21.00 mi1.00 mi3748+3123524+2783524+278695(Top 2%)658(Top 4%)658(Top 12%)
35K21.75 mi0.75 mi3673+753453+713453+712273(Top 8%)2125(Top 13%)2125(Top 38%)
23M23.00 mi1.25 mi3628+453407+463407+463590(Top 13%)3246(Top 20%)3246(Top 58%)
24M24.00 mi1.00 mi3704-763460-533460-535568(Top 20%)4631(Top 29%)4631(Top 82%)
40K24.85 mi0.85 mi3730-263480-203480-205085(Top 18%)4256(Top 26%)4256(Top 75%)
25.2M25.20 mi0.35 mi37303474+63474+64195(Top 15%)3551(Top 22%)3551(Top 63%)
Finish26.22 mi1.02 mi3765-353496-223496-226116(Top 22%)4792(Top 30%)4792(Top 85%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21story building
+97ft-345ft

Overall

4862

Males

4533

M18-39

4533

5K→10K

3.1 - 6.2 mi

Top 14%
×5story building
+79ft-138ft

Overall

4106

Males

3860

M18-39

3860

10K→15K

6.2 - 9.3 mi

Top 17%
×3story building
+67ft-78ft

Overall

4862

Males

4533

M18-39

4533

15K→20K

9.3 - 12.4 mi

Top 15%
×5story building
+106ft-86ft

Overall

4374

Males

4088

M18-39

4088

20K→Half

12.4 - 13.1 mi

Top 14%
×2story building
+19ft-37ft

Overall

3959

Males

3723

M18-39

3723

Half→25K

13.1 - 15.5 mi

Top 18%
×4story building
+66ft-88ft

Overall

5094

Males

4669

M18-39

4669

25K→30K

15.5 - 18.6 mi

Top 16%
×9story building
+181ft-148ft

Overall

4668

Males

4255

M18-39

4255

30K→20M

18.6 - 20.0 mi

Top 13%
×5story building
+64ft-50ft

Overall

3599

Males

3315

M18-39

3315

20M→21M

20.0 - 21.0 mi

Top 2%
×8story building
+106ft-24ft

Overall

695

Males

658

M18-39

658

21M→35K

21.0 - 21.8 mi

Top 8%
×7story building
+17ft-86ft

Overall

2273

Males

2125

M18-39

2125

35K→23M

21.8 - 23.0 mi

Top 13%
×5story building
+23ft-63ft

Overall

3590

Males

3246

M18-39

3246

23M→24M

23.0 - 24.0 mi

Top 20%
×6story building
+12ft-82ft

Overall

5568

Males

4631

M18-39

4631

24M→40K

24.0 - 24.9 mi

Top 18%
×1story
+6ft-20ft

Overall

5085

Males

4256

M18-39

4256

40K→25.2M

24.9 - 25.2 mi

Top 15%
×1story
+13ft-16ft

Overall

4195

Males

3551

M18-39

3551

25.2M→Finish

25.2 - 26.2 mi

Top 22%
×2story building
+22ft-21ft

Overall

6116

Males

4792

M18-39

4792

Passing Analysis

Category:
Athletes Passed
1004
Passed By
1928
Net Change
-924
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#2841
5K → 10K16644-628#2841#3469
10K → 15K21451-430#3469#3899
15K → 20K71133-62#3899#3961
20K → Half2117+4#3961#3957
Half → 25K48172-124#3957#4081
25K → 30K121171-50#4081#4131
30K → 20M9524+71#4131#4060
20M → 21M3120+312#4060#3748
21M → 35K827+75#3748#3673
35K → 23M8136+45#3673#3628
23M → 24M29105-76#3628#3704
24M → 40K3864-26#3704#3730
40K → 25.2M24240#3730#3730
25.2M → Finish4580-35#3730#3765
TOTALS10041928-924
📊

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