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BOSTON MARATHON 2025

Eric Ngo

Bib: 8283•M

CA

0:00
0:00
/ mi
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Division (M18-39)
#0 / 5642
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
31:18
Rank: #25763
Start → 5K
31:18 | 10:04/mi
10K· 6.21 mi
1:02:10
Rank: #25449 (+314)
5K → 10K
30:52 | 9:56/mi
15K· 9.32 mi
1:33:05
Rank: #25252 (+197)
10K → 15K
30:55 | 9:57/mi
20K· 12.43 mi
2:04:13
Rank: #25008 (+244)
15K → 20K
31:08 | 10:01/mi
Half· 13.11 mi
2:11:08
Rank: #25006 (+2)
20K → Half
6:55 | 10:08/mi
25K· 15.53 mi
2:36:32
Rank: #24893 (+113)
Half → 25K
25:24 | 10:29/mi
30K· 18.64 mi
3:16:28
Rank: #25315 (-422)
25K → 30K
39:56 | 12:51/mi
20M
3:35:54
Rank: #25572 (-257)
30K → 20M
19:26 | 14:18/mi
21M
3:47:00
Rank: #25420 (+152)
20M → 21M
11:06 | 11:06/mi
35K· 21.75 mi
3:55:00
Rank: #25347 (+73)
21M → 35K
8:00 | 10:42/mi
23M
4:11:26
Rank: #25442 (-95)
35K → 23M
16:26 | 13:08/mi
24M
4:27:52
Rank: #25798 (-356)
23M → 24M
16:26 | 16:26/mi
40K· 24.85 mi
4:39:01
Rank: #25837 (-39)
24M → 40K
11:09 | 13:02/mi
25.2M
4:43:48
Rank: #25857 (-20)
40K → 25.2M
4:47 | 13:52/mi
Finish· 26.22 mi
4:54:47
Rank: #25832 (+25)
25.2M → Finish
10:59 | 10:47/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time2:11:08
Pace10:00 /mi
2nd Half
Distance13.11 mi
Time2:43:39
Pace12:29 /mi
📊Positive Split: 24.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:41:1931:1810:0431:18
10:04
-
10K
6.21 mi11:12:111:02:1010:0030:52
9:56
-0:08
15K
9.32 mi11:43:061:33:059:5930:55
9:57
+0:01
20K
12.43 mi12:14:142:04:1310:0031:08
10:01
+0:04
Half
13.11 mi12:21:092:11:0810:006:55
10:08
+0:07
25K
15.53 mi12:46:332:36:3210:0525:24
10:29
+0:21
30K
18.64 mi13:26:293:16:2810:3239:56
12:51
+2:22
20M
20.00 mi13:45:553:35:5410:4819:26
14:18
+1:27
21M
21.00 mi13:57:013:47:0010:4911:06
11:06
-3:12
35K
21.75 mi14:05:013:55:0010:488:00
10:42
-0:24
23M
23.00 mi14:21:274:11:2610:5616:26
13:08
+2:26
24M
24.00 mi14:37:534:27:5211:1016:26
16:26
+3:18
40K
24.85 mi14:49:024:39:0111:1411:09
13:02
-3:24
25.2M
25.20 mi14:53:494:43:4811:164:47
13:52
+0:50
Finish
26.22 mi15:04:484:54:4711:1510:59
10:47
-3:05

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

9:56 /mi

Average Pace

11:15 /mi

Slowest Pace

16:26 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

3:06:37

63% of race

Time at Slower Pace

1:48:10

37% of race

Average Pace: 11:15 /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 mi10:41:1931:1810:0431:18
10:04
#25763
10K
6.21 mi11:12:111:02:1010:0030:52
9:56
#25449
15K
9.32 mi11:43:061:33:059:5930:55
9:57
#25252
20K
12.43 mi12:14:142:04:1310:0031:08
10:01
#25008
Half
13.11 mi12:21:092:11:0810:006:55
10:08
#25006
25K
15.53 mi12:46:332:36:3210:0525:24
10:29
#24893
30K
18.64 mi13:26:293:16:2810:3239:56
12:51
#25315
20M
20.00 mi13:45:553:35:5410:4819:26
14:18
#25572
21M
21.00 mi13:57:013:47:0010:4911:06
11:06
#25420
35K
21.75 mi14:05:013:55:0010:488:00
10:42
#25347
23M
23.00 mi14:21:274:11:2610:5616:26
13:08
#25442
24M
24.00 mi14:37:534:27:5211:1016:26
16:26
#25798
40K
24.85 mi14:49:024:39:0111:1411:09
13:02
#25837
25.2M
25.20 mi14:53:494:43:4811:164:47
13:52
#25857
Finish
26.22 mi15:04:484:54:4711:1510:59
10:47
#25832
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi25763150731507324907(Top 88%)14677(Top 91%)14677(Top 260%)
10K6.21 mi3.10 mi25449+31414911+16214911+16225174(Top 89%)14785(Top 92%)14785(Top 262%)
15K9.32 mi3.11 mi25252+19714825+8614825+8624907(Top 88%)14677(Top 91%)14677(Top 260%)
20K12.43 mi3.11 mi25008+24414709+11614709+11624262(Top 85%)14341(Top 89%)14341(Top 254%)
Half13.11 mi0.68 mi25006+214700+914700+925122(Top 88%)14731(Top 91%)14731(Top 261%)
25K15.53 mi2.42 mi24893+11314633+6714633+6724338(Top 86%)14349(Top 89%)14349(Top 254%)
30K18.64 mi3.11 mi25315-42214795-16214795-16226530(Top 93%)15225(Top 95%)15225(Top 270%)
20M20.00 mi1.36 mi25572-25714896-10114896-10127504(Top 97%)15611(Top 97%)15611(Top 277%)
21M21.00 mi1.00 mi25420+15214809+8714809+8721661(Top 76%)12816(Top 80%)12816(Top 227%)
35K21.75 mi0.75 mi25347+7314767+4214767+4223569(Top 83%)13672(Top 85%)13672(Top 242%)
23M23.00 mi1.25 mi25442-9514799-3214799-3226539(Top 93%)15105(Top 94%)15105(Top 268%)
24M24.00 mi1.00 mi25798-35614959-16014959-16028269(Top 100%)16009(Top 99%)16009(Top 284%)
40K24.85 mi0.85 mi25837-3914972-1314972-1326335(Top 93%)14960(Top 93%)14960(Top 265%)
25.2M25.20 mi0.35 mi25857-2014977-514977-526144(Top 92%)14826(Top 92%)14826(Top 263%)
Finish26.22 mi1.02 mi25832+2514953+2414953+2424908(Top 88%)14233(Top 88%)14233(Top 252%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 88%
×21stories
+97ft-345ft

Overall

24907

Males

14677

M18-39

14677

5K→10K

3.1 - 6.2 mi

Top 89%
×5stories
+79ft-138ft

Overall

25174

Males

14785

M18-39

14785

10K→15K

6.2 - 9.3 mi

Top 88%
×3stories
+67ft-78ft

Overall

24907

Males

14677

M18-39

14677

15K→20K

9.3 - 12.4 mi

Top 85%
×5stories
+106ft-86ft

Overall

24262

Males

14341

M18-39

14341

20K→Half

12.4 - 13.1 mi

Top 88%
×2stories
+19ft-37ft

Overall

25122

Males

14731

M18-39

14731

Half→25K

13.1 - 15.5 mi

Top 86%
×4stories
+66ft-88ft

Overall

24338

Males

14349

M18-39

14349

25K→30K

15.5 - 18.6 mi

Top 93%
×9stories
+181ft-148ft

Overall

26530

Males

15225

M18-39

15225

30K→20M

18.6 - 20.0 mi

Top 97%
×5stories
+64ft-50ft

Overall

27504

Males

15611

M18-39

15611

20M→21M

20.0 - 21.0 mi

Top 76%
×8stories
+106ft-24ft

Overall

21661

Males

12816

M18-39

12816

21M→35K

21.0 - 21.8 mi

Top 83%
×7stories
+17ft-86ft

Overall

23569

Males

13672

M18-39

13672

35K→23M

21.8 - 23.0 mi

Top 93%
×5stories
+23ft-63ft

Overall

26539

Males

15105

M18-39

15105

23M→24M

23.0 - 24.0 mi

Top 100%
×6stories
+12ft-82ft

Overall

28269

Males

16009

M18-39

16009

24M→40K

24.0 - 24.9 mi

Top 93%
×1story
+6ft-20ft

Overall

26335

Males

14960

M18-39

14960

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1story
+13ft-16ft

Overall

26144

Males

14826

M18-39

14826

25.2M→Finish

25.2 - 26.2 mi

Top 88%
×2stories
+22ft-21ft

Overall

24908

Males

14233

M18-39

14233

Passing Analysis

Category:
Athletes Passed
1451
Passed By
1520
Net Change
-69
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#25763
5K → 10K37864+314#25763#25449
10K → 15K24952+197#25449#25252
15K → 20K27733+244#25252#25008
20K → Half3432+2#25008#25006
Half → 25K15744+113#25006#24893
25K → 30K35457-422#24893#25315
30K → 20M8265-257#25315#25572
20M → 21M1542+152#25572#25420
21M → 35K763+73#25420#25347
35K → 23M19114-95#25347#25442
23M → 24M4360-356#25442#25798
24M → 40K1352-39#25798#25837
40K → 25.2M1232-20#25837#25857
25.2M → Finish3510+25#25857#25832
TOTALS14511520-69
📊

Passing Visuals

Category:
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🔥Passing Intensity

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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