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BOSTON MARATHON 2025

Yuki Negami

Bib: 31957•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 45%
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
9:35/mi
29:46
↑ 97↓ 3451.5%
10K· 6.21 mi
8:38/mi
56:36
↑ 79↓ 1380.4%
15K· 9.32 mi
8:05/mi
1:21:42
↑ 67↓ 78
20K· 12.43 mi
7:44/mi
1:45:43
↑ 106↓ 860.1%
Half· 13.11 mi
7:30/mi
1:50:50
↑ 19↓ 370.5%
25K· 15.53 mi
7:35/mi
2:09:14
↑ 66↓ 880.2%
30K· 18.64 mi
7:36/mi
2:32:50
↑ 181↓ 1480.2%
20M
7:18/mi
2:42:45
↑ 64↓ 500.2%
21M
7:33/mi
2:50:18
↑ 106↓ 241.6%
35K· 21.75 mi
7:05/mi
2:55:36
↑ 17↓ 861.7%
23M
7:25/mi
3:04:53
↑ 23↓ 630.6%
24M
7:19/mi
3:12:12
↓ 821.3%
40K· 24.85 mi
7:22/mi
3:18:30
↓ 200.3%
25.2M
8:01/mi
3:21:16
↑ 13↓ 160.2%
Finish· 26.22 mi
7:03/mi
3:28:27
↑ 22↓ 21

The Course

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Half Splits

1st Half· via Half
Distance13.11 mi
Time1:50:50
Pace8:27 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:37:37
Pace7:27 /mi
📊Negative Split: 11.9% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:53:5629:469:3529:46
9:35
-
10K
6.21 mi12:20:4656:369:0726:50
8:38
-0:57
15K
9.32 mi12:45:521:21:428:4625:06
8:05
-0:33
20K
12.43 mi13:09:531:45:438:3024:01
7:44
-0:21
Half
13.11 mi13:15:001:50:508:275:07
7:30
-0:14
25K
15.53 mi13:33:242:09:148:1918:24
7:35
+0:05
30K
18.64 mi13:57:002:32:508:1223:36
7:36
+0:01
20M
20.00 mi14:06:552:42:458:089:55
7:18
-0:18
21M
21.00 mi14:14:282:50:188:077:33
7:33
+0:15
35K
21.75 mi14:19:462:55:368:045:18
7:05
-0:28
23M
23.00 mi14:29:033:04:538:029:17
7:25
+0:20
24M
24.00 mi14:36:223:12:128:017:19
7:19
-0:06
40K
24.85 mi14:42:403:18:307:596:18
7:22
+0:03
25.2M
25.20 mi14:45:263:21:167:592:46
8:01
+0:39
Finish
26.22 mi14:52:373:28:277:577:11
7:03
-0:58

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

7:03 /mi

Average Pace

7:57 /mi

Slowest Pace

9:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

12:29

6% of race

Time at Steady Pace

1:51:30

53% of race

Time at Slower Pace

1:24:28

41% of race

Average Pace: 7:57 /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 mi11:53:5629:469:3529:46
9:35
#24500
10K
6.21 mi12:20:4656:369:0726:50
8:38
#22842
15K
9.32 mi12:45:521:21:428:4625:06
8:05
#21062
20K
12.43 mi13:09:531:45:438:3024:01
7:44
#19309
Half
13.11 mi13:15:001:50:508:275:07
7:30
#18980
25K
15.53 mi13:33:242:09:148:1918:24
7:35
#17704
30K
18.64 mi13:57:002:32:508:1223:36
7:36
#16199
20M
20.00 mi14:06:552:42:458:089:55
7:18
#15409
21M
21.00 mi14:14:282:50:188:077:33
7:33
#14730
35K
21.75 mi14:19:462:55:368:045:18
7:05
#14397
23M
23.00 mi14:29:033:04:538:029:17
7:25
#13826
24M
24.00 mi14:36:223:12:128:017:19
7:19
#13455
40K
24.85 mi14:42:403:18:307:596:18
7:22
#13164
25.2M
25.20 mi14:45:263:21:167:592:46
8:01
#13043
Finish
26.22 mi14:52:373:28:277:577:11
7:03
#12721
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi24500144741447416590(Top 58%)11047(Top 69%)11047(Top 196%)
10K6.21 mi3.10 mi22842+165813711+76313711+76320531(Top 72%)12710(Top 79%)12710(Top 225%)
15K9.32 mi3.11 mi21062+178012932+77912932+77916590(Top 58%)11047(Top 69%)11047(Top 196%)
20K12.43 mi3.11 mi19309+175312165+76712165+76712657(Top 45%)9266(Top 58%)9266(Top 164%)
Half13.11 mi0.68 mi18980+32912029+13612029+13611669(Top 41%)8879(Top 55%)8879(Top 157%)
25K15.53 mi2.42 mi17704+127611474+55511474+55510675(Top 38%)8237(Top 51%)8237(Top 146%)
30K18.64 mi3.11 mi16199+150510814+66010814+6608420(Top 30%)6838(Top 42%)6838(Top 121%)
20M20.00 mi1.36 mi15409+79010435+37910435+3795795(Top 20%)5056(Top 31%)5056(Top 90%)
21M21.00 mi1.00 mi14730+67910117+31810117+3184884(Top 17%)4294(Top 27%)4294(Top 76%)
35K21.75 mi0.75 mi14397+3339962+1559962+1555918(Top 21%)5017(Top 31%)5017(Top 89%)
23M23.00 mi1.25 mi13826+5719657+3059657+3056144(Top 22%)5060(Top 31%)5060(Top 90%)
24M24.00 mi1.00 mi13455+3719465+1929465+1926527(Top 23%)5249(Top 33%)5249(Top 93%)
40K24.85 mi0.85 mi13164+2919310+1559310+1556027(Top 21%)4873(Top 30%)4873(Top 86%)
25.2M25.20 mi0.35 mi13043+1219247+639247+636091(Top 21%)4817(Top 30%)4817(Top 85%)
Finish26.22 mi1.02 mi12721+3229071+1769071+1766074(Top 21%)4782(Top 30%)4782(Top 85%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 58%
×21story building
+97ft-345ft

Overall

16590

Males

11047

M18-39

11047

5K→10K

3.1 - 6.2 mi

Top 72%
×5story building
+79ft-138ft

Overall

20531

Males

12710

M18-39

12710

10K→15K

6.2 - 9.3 mi

Top 58%
×3story building
+67ft-78ft

Overall

16590

Males

11047

M18-39

11047

15K→20K

9.3 - 12.4 mi

Top 45%
×5story building
+106ft-86ft

Overall

12657

Males

9266

M18-39

9266

20K→Half

12.4 - 13.1 mi

Top 41%
×2story building
+19ft-37ft

Overall

11669

Males

8879

M18-39

8879

Half→25K

13.1 - 15.5 mi

Top 38%
×4story building
+66ft-88ft

Overall

10675

Males

8237

M18-39

8237

25K→30K

15.5 - 18.6 mi

Top 30%
×9story building
+181ft-148ft

Overall

8420

Males

6838

M18-39

6838

30K→20M

18.6 - 20.0 mi

Top 20%
×5story building
+64ft-50ft

Overall

5795

Males

5056

M18-39

5056

20M→21M

20.0 - 21.0 mi

Top 17%
×8story building
+106ft-24ft

Overall

4884

Males

4294

M18-39

4294

21M→35K

21.0 - 21.8 mi

Top 21%
×7story building
+17ft-86ft

Overall

5918

Males

5017

M18-39

5017

35K→23M

21.8 - 23.0 mi

Top 22%
×5story building
+23ft-63ft

Overall

6144

Males

5060

M18-39

5060

23M→24M

23.0 - 24.0 mi

Top 23%
×6story building
+12ft-82ft

Overall

6527

Males

5249

M18-39

5249

24M→40K

24.0 - 24.9 mi

Top 21%
×1story
+6ft-20ft

Overall

6027

Males

4873

M18-39

4873

40K→25.2M

24.9 - 25.2 mi

Top 21%
×1story
+13ft-16ft

Overall

6091

Males

4817

M18-39

4817

25.2M→Finish

25.2 - 26.2 mi

Top 21%
×2story building
+22ft-21ft

Overall

6074

Males

4782

M18-39

4782

Passing Analysis

Category:
Athletes Passed
11783
Passed By
4
Net Change
+11779
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24500
5K → 10K16591+1658#24500#22842
10K → 15K17811+1780#22842#21062
15K → 20K17530+1753#21062#19309
20K → Half3290+329#19309#18980
Half → 25K12760+1276#18980#17704
25K → 30K15050+1505#17704#16199
30K → 20M7900+790#16199#15409
20M → 21M6790+679#15409#14730
21M → 35K3330+333#14730#14397
35K → 23M5710+571#14397#13826
23M → 24M3710+371#13826#13455
24M → 40K2921+291#13455#13164
40K → 25.2M1210+121#13164#13043
25.2M → Finish3231+322#13043#12721
TOTALS117834+11779
📊

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