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BOSTON MARATHON 2025

Daniel Epstein

Bib: 27763•M

MA

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 38%
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
8:02/mi
24:58
↑ 97↓ 3451.5%
10K· 6.21 mi
7:28/mi
48:09
↑ 79↓ 1380.4%
15K· 9.32 mi
7:23/mi
1:11:05
↑ 67↓ 78
20K· 12.43 mi
7:35/mi
1:34:39
↑ 106↓ 860.1%
Half· 13.11 mi
7:26/mi
1:39:43
↑ 19↓ 370.5%
25K· 15.53 mi
7:39/mi
1:58:16
↑ 66↓ 880.2%
30K· 18.64 mi
7:49/mi
2:22:32
↑ 181↓ 1480.2%
20M
7:48/mi
2:33:08
↑ 64↓ 500.2%
21M
8:18/mi
2:41:26
↑ 106↓ 241.6%
35K· 21.75 mi
7:44/mi
2:47:13
↑ 17↓ 861.7%
23M
7:48/mi
2:56:59
↑ 23↓ 630.6%
24M
7:40/mi
3:04:39
↓ 821.3%
40K· 24.85 mi
7:50/mi
3:11:21
↓ 200.3%
25.2M
8:27/mi
3:14:16
↑ 13↓ 160.2%
Finish· 26.22 mi
7:34/mi
3:21:59
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:39:43
Pace7:36 /mi
2nd Half
Distance13.11 mi
Time1:42:16
Pace7:48 /mi
📊Positive Split: 2.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:0024:588:0224:58
8:02
-
10K
6.21 mi12:06:1148:097:4523:11
7:28
-0:34
15K
9.32 mi12:29:071:11:057:3822:56
7:23
-0:05
20K
12.43 mi12:52:411:34:397:3723:34
7:35
+0:12
Half
13.11 mi12:57:451:39:437:365:04
7:26
-0:09
25K
15.53 mi13:16:181:58:167:3718:33
7:39
+0:13
30K
18.64 mi13:40:342:22:327:3924:16
7:49
+0:10
20M
20.00 mi13:51:102:33:087:3910:36
7:48
-0:01
21M
21.00 mi13:59:282:41:267:418:18
8:18
+0:30
35K
21.75 mi14:05:152:47:137:415:47
7:44
-0:34
23M
23.00 mi14:15:012:56:597:429:46
7:48
+0:04
24M
24.00 mi14:22:413:04:397:427:40
7:40
-0:08
40K
24.85 mi14:29:233:11:217:426:42
7:50
+0:10
25.2M
25.20 mi14:32:183:14:167:432:55
8:27
+0:37
Finish
26.22 mi14:40:013:21:597:437:43
7:34
-0:53

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

7:23 /mi

Average Pace

7:43 /mi

Slowest Pace

8:27 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:10:46

94% of race

Time at Steady Pace

11:13

6% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 7:42 /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 mi11:43:0024:588:0224:58
8:02
#16854
10K
6.21 mi12:06:1148:097:4523:11
7:28
#14315
15K
9.32 mi12:29:071:11:057:3822:56
7:23
#13097
20K
12.43 mi12:52:411:34:397:3723:34
7:35
#12625
Half
13.11 mi12:57:451:39:437:365:04
7:26
#12546
25K
15.53 mi13:16:181:58:167:3718:33
7:39
#12299
30K
18.64 mi13:40:342:22:327:3924:16
7:49
#11782
20M
20.00 mi13:51:102:33:087:3910:36
7:48
#11522
21M
21.00 mi13:59:282:41:267:418:18
8:18
#11347
35K
21.75 mi14:05:152:47:137:415:47
7:44
#11305
23M
23.00 mi14:15:012:56:597:429:46
7:48
#11086
24M
24.00 mi14:22:413:04:397:427:40
7:40
#10956
40K
24.85 mi14:29:233:11:217:426:42
7:50
#10853
25.2M
25.20 mi14:32:183:14:167:432:55
8:27
#10807
Finish
26.22 mi14:40:013:21:597:437:43
7:34
#10718
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi16854111411114110680(Top 38%)8440(Top 52%)8440(Top 150%)
10K6.21 mi3.10 mi14315+253910144+99710144+99711723(Top 41%)9015(Top 56%)9015(Top 160%)
15K9.32 mi3.11 mi13097+12189609+5359609+53510680(Top 38%)8440(Top 52%)8440(Top 150%)
20K12.43 mi3.11 mi12625+4729368+2419368+24111461(Top 40%)8712(Top 54%)8712(Top 154%)
Half13.11 mi0.68 mi12546+799334+349334+3411055(Top 39%)8571(Top 53%)8571(Top 152%)
25K15.53 mi2.42 mi12299+2479189+1459189+14511142(Top 39%)8455(Top 52%)8455(Top 150%)
30K18.64 mi3.11 mi11782+5178862+3278862+32710022(Top 35%)7701(Top 48%)7701(Top 136%)
20M20.00 mi1.36 mi11522+2608708+1548708+1549032(Top 32%)7019(Top 44%)7019(Top 124%)
21M21.00 mi1.00 mi11347+1758586+1228586+1229213(Top 32%)6943(Top 43%)6943(Top 123%)
35K21.75 mi0.75 mi11305+428538+488538+4810276(Top 36%)7510(Top 47%)7510(Top 133%)
23M23.00 mi1.25 mi11086+2198398+1408398+1408588(Top 30%)6495(Top 40%)6495(Top 115%)
24M24.00 mi1.00 mi10956+1308294+1048294+1048898(Top 31%)6605(Top 41%)6605(Top 117%)
40K24.85 mi0.85 mi10853+1038211+838211+839010(Top 32%)6534(Top 41%)6534(Top 116%)
25.2M25.20 mi0.35 mi10807+468176+358176+358539(Top 30%)6224(Top 39%)6224(Top 110%)
Finish26.22 mi1.02 mi10718+898105+718105+719714(Top 34%)6825(Top 42%)6825(Top 121%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 38%
×21story building
+97ft-345ft

Overall

10680

Males

8440

M18-39

8440

5K→10K

3.1 - 6.2 mi

Top 41%
×5story building
+79ft-138ft

Overall

11723

Males

9015

M18-39

9015

10K→15K

6.2 - 9.3 mi

Top 38%
×3story building
+67ft-78ft

Overall

10680

Males

8440

M18-39

8440

15K→20K

9.3 - 12.4 mi

Top 40%
×5story building
+106ft-86ft

Overall

11461

Males

8712

M18-39

8712

20K→Half

12.4 - 13.1 mi

Top 39%
×2story building
+19ft-37ft

Overall

11055

Males

8571

M18-39

8571

Half→25K

13.1 - 15.5 mi

Top 39%
×4story building
+66ft-88ft

Overall

11142

Males

8455

M18-39

8455

25K→30K

15.5 - 18.6 mi

Top 35%
×9story building
+181ft-148ft

Overall

10022

Males

7701

M18-39

7701

30K→20M

18.6 - 20.0 mi

Top 32%
×5story building
+64ft-50ft

Overall

9032

Males

7019

M18-39

7019

20M→21M

20.0 - 21.0 mi

Top 32%
×8story building
+106ft-24ft

Overall

9213

Males

6943

M18-39

6943

21M→35K

21.0 - 21.8 mi

Top 36%
×7story building
+17ft-86ft

Overall

10276

Males

7510

M18-39

7510

35K→23M

21.8 - 23.0 mi

Top 30%
×5story building
+23ft-63ft

Overall

8588

Males

6495

M18-39

6495

23M→24M

23.0 - 24.0 mi

Top 31%
×6story building
+12ft-82ft

Overall

8898

Males

6605

M18-39

6605

24M→40K

24.0 - 24.9 mi

Top 32%
×1story
+6ft-20ft

Overall

9010

Males

6534

M18-39

6534

40K→25.2M

24.9 - 25.2 mi

Top 30%
×1story
+13ft-16ft

Overall

8539

Males

6224

M18-39

6224

25.2M→Finish

25.2 - 26.2 mi

Top 34%
×2story building
+22ft-21ft

Overall

9714

Males

6825

M18-39

6825

Passing Analysis

Category:
Athletes Passed
6419
Passed By
283
Net Change
+6136
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16854
5K → 10K25434+2539#16854#14315
10K → 15K12191+1218#14315#13097
15K → 20K49927+472#13097#12625
20K → Half856+79#12625#12546
Half → 25K29144+247#12546#12299
25K → 30K54831+517#12299#11782
30K → 20M2666+260#11782#11522
20M → 21M20025+175#11522#11347
21M → 35K7735+42#11347#11305
35K → 23M23718+219#11305#11086
23M → 24M14818+130#11086#10956
24M → 40K12522+103#10956#10853
40K → 25.2M537+46#10853#10807
25.2M → Finish12839+89#10807#10718
TOTALS6419283+6136
📊

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