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BOSTON MARATHON 2025

James Stacey

Bib: 5129•M

0:00
0:00
/ mi
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Overall
#0 / 28404
Top 15%
Gender (Male)
#0 / 16105
Top 25%
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
20:11
Rank: #3814
Start → 5K
20:11 | 6:30/mi
10K· 6.21 mi
40:38
Rank: #4058 (-244)
5K → 10K
20:27 | 6:35/mi
15K· 9.32 mi
1:01:14
Rank: #4175 (-117)
10K → 15K
20:36 | 6:38/mi
20K· 12.43 mi
1:21:56
Rank: #4114 (+61)
15K → 20K
20:42 | 6:40/mi
Half· 13.11 mi
1:26:25
Rank: #4102 (+12)
20K → Half
4:29 | 6:34/mi
25K· 15.53 mi
1:42:37
Rank: #4032 (+70)
Half → 25K
16:12 | 6:41/mi
30K· 18.64 mi
2:03:44
Rank: #3877 (+155)
25K → 30K
21:07 | 6:48/mi
20M
2:13:16
Rank: #3860 (+17)
30K → 20M
9:32 | 7:01/mi
21M
2:20:31
Rank: #3796 (+64)
20M → 21M
7:15 | 7:15/mi
35K· 21.75 mi
2:25:33
Rank: #3780 (+16)
21M → 35K
5:02 | 6:44/mi
23M
2:34:43
Rank: #3859 (-79)
35K → 23M
9:10 | 7:19/mi
24M
2:41:49
Rank: #3910 (-51)
23M → 24M
7:06 | 7:06/mi
40K· 24.85 mi
2:48:23
Rank: #4041 (-131)
24M → 40K
6:34 | 7:41/mi
25.2M
2:51:15
Rank: #4099 (-58)
40K → 25.2M
2:52 | 8:19/mi
Finish· 26.22 mi
2:59:01
Rank: #4350 (-251)
25.2M → Finish
7:46 | 7:37/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:26:25
Pace6:36 /mi
2nd Half
Distance13.11 mi
Time1:32:36
Pace7:04 /mi
📊Positive Split: 7.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:1920:116:3020:11
6:30
-
10K
6.21 mi10:43:4640:386:3220:27
6:35
+0:05
15K
9.32 mi11:04:221:01:146:3420:36
6:38
+0:03
20K
12.43 mi11:25:041:21:566:3620:42
6:40
+0:02
Half
13.11 mi11:29:331:26:256:364:29
6:34
-0:06
25K
15.53 mi11:45:451:42:376:3616:12
6:41
+0:07
30K
18.64 mi12:06:522:03:446:3821:07
6:48
+0:07
20M
20.00 mi12:16:242:13:166:409:32
7:01
+0:13
21M
21.00 mi12:23:392:20:316:417:15
7:15
+0:14
35K
21.75 mi12:28:412:25:336:425:02
6:44
-0:31
23M
23.00 mi12:37:512:34:436:449:10
7:19
+0:35
24M
24.00 mi12:44:572:41:496:457:06
7:06
-0:13
40K
24.85 mi12:51:312:48:236:466:34
7:41
+0:35
25.2M
25.20 mi12:54:232:51:156:482:52
8:19
+0:38
Finish
26.22 mi13:02:092:59:016:507:46
7:37
-0:42

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

6:30 /mi

Average Pace

6:50 /mi

Slowest Pace

8:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

20:11

11% of race

Time at Steady Pace

1:58:07

66% of race

Time at Slower Pace

40:43

23% of race

Average Pace: 6:50 /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 mi10:23:1920:116:3020:11
6:30
#3814
10K
6.21 mi10:43:4640:386:3220:27
6:35
#4058
15K
9.32 mi11:04:221:01:146:3420:36
6:38
#4175
20K
12.43 mi11:25:041:21:566:3620:42
6:40
#4114
Half
13.11 mi11:29:331:26:256:364:29
6:34
#4102
25K
15.53 mi11:45:451:42:376:3616:12
6:41
#4032
30K
18.64 mi12:06:522:03:446:3821:07
6:48
#3877
20M
20.00 mi12:16:242:13:166:409:32
7:01
#3860
21M
21.00 mi12:23:392:20:316:417:15
7:15
#3796
35K
21.75 mi12:28:412:25:336:425:02
6:44
#3780
23M
23.00 mi12:37:512:34:436:449:10
7:19
#3859
24M
24.00 mi12:44:572:41:496:457:06
7:06
#3910
40K
24.85 mi12:51:312:48:236:466:34
7:41
#4041
25.2M
25.20 mi12:54:232:51:156:482:52
8:19
#4099
Finish
26.22 mi13:02:092:59:016:507:46
7:37
#4350
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi3814360936094511(Top 16%)4228(Top 26%)4228(Top 75%)
10K6.21 mi3.10 mi4058-2443828-2193828-2194324(Top 15%)4062(Top 25%)4062(Top 72%)
15K9.32 mi3.11 mi4175-1173932-1043932-1044511(Top 16%)4228(Top 26%)4228(Top 75%)
20K12.43 mi3.11 mi4114+613870+623870+624118(Top 14%)3863(Top 24%)3863(Top 68%)
Half13.11 mi0.68 mi4102+123860+103860+104211(Top 15%)3950(Top 25%)3950(Top 70%)
25K15.53 mi2.42 mi4032+703792+683792+684004(Top 14%)3736(Top 23%)3736(Top 66%)
30K18.64 mi3.11 mi3877+1553650+1423650+1423439(Top 12%)3205(Top 20%)3205(Top 57%)
20M20.00 mi1.36 mi3860+173630+203630+204204(Top 15%)3843(Top 24%)3843(Top 68%)
21M21.00 mi1.00 mi3796+643568+623568+623403(Top 12%)3125(Top 19%)3125(Top 55%)
35K21.75 mi0.75 mi3780+163553+153553+153710(Top 13%)3357(Top 21%)3357(Top 60%)
23M23.00 mi1.25 mi3859-793604-513604-515576(Top 20%)4720(Top 29%)4720(Top 84%)
24M24.00 mi1.00 mi3910-513638-343638-345216(Top 18%)4406(Top 27%)4406(Top 78%)
40K24.85 mi0.85 mi4041-1313747-1093747-1097921(Top 28%)5941(Top 37%)5941(Top 105%)
25.2M25.20 mi0.35 mi4099-583788-413788-417646(Top 27%)5705(Top 35%)5705(Top 101%)
Finish26.22 mi1.02 mi4350-2514003-2154003-21510071(Top 35%)7008(Top 44%)7008(Top 124%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 16%
×21stories
+97ft-345ft

Overall

4511

Males

4228

M18-39

4228

5K→10K

3.1 - 6.2 mi

Top 15%
×5stories
+79ft-138ft

Overall

4324

Males

4062

M18-39

4062

10K→15K

6.2 - 9.3 mi

Top 16%
×3stories
+67ft-78ft

Overall

4511

Males

4228

M18-39

4228

15K→20K

9.3 - 12.4 mi

Top 14%
×5stories
+106ft-86ft

Overall

4118

Males

3863

M18-39

3863

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

4211

Males

3950

M18-39

3950

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

4004

Males

3736

M18-39

3736

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3439

Males

3205

M18-39

3205

30K→20M

18.6 - 20.0 mi

Top 15%
×5stories
+64ft-50ft

Overall

4204

Males

3843

M18-39

3843

20M→21M

20.0 - 21.0 mi

Top 12%
×8stories
+106ft-24ft

Overall

3403

Males

3125

M18-39

3125

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3710

Males

3357

M18-39

3357

35K→23M

21.8 - 23.0 mi

Top 20%
×5stories
+23ft-63ft

Overall

5576

Males

4720

M18-39

4720

23M→24M

23.0 - 24.0 mi

Top 18%
×6stories
+12ft-82ft

Overall

5216

Males

4406

M18-39

4406

24M→40K

24.0 - 24.9 mi

Top 28%
×1story
+6ft-20ft

Overall

7921

Males

5941

M18-39

5941

40K→25.2M

24.9 - 25.2 mi

Top 27%
×1story
+13ft-16ft

Overall

7646

Males

5705

M18-39

5705

25.2M→Finish

25.2 - 26.2 mi

Top 35%
×2stories
+22ft-21ft

Overall

10071

Males

7008

M18-39

7008

Passing Analysis

Category:
Athletes Passed
894
Passed By
1430
Net Change
-536
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#3814
5K → 10K60304-244#3814#4058
10K → 15K52169-117#4058#4175
15K → 20K13776+61#4175#4114
20K → Half2715+12#4114#4102
Half → 25K11343+70#4102#4032
25K → 30K19944+155#4032#3877
30K → 20M6447+17#3877#3860
20M → 21M9329+64#3860#3796
21M → 35K3418+16#3796#3780
35K → 23M48127-79#3780#3859
23M → 24M3788-51#3859#3910
24M → 40K18149-131#3910#4041
40K → 25.2M866-58#4041#4099
25.2M → Finish4255-251#4099#4350
TOTALS8941430-536
📊

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