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BOSTON MARATHON 2025

Bryan Decristoforo

Bib: 27875•M

MA

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

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
9:28/mi
29:24
↑ 97↓ 3451.5%
10K· 6.21 mi
8:39/mi
56:17
↑ 79↓ 1380.4%
15K· 9.32 mi
8:29/mi
1:22:37
↑ 67↓ 78
20K· 12.43 mi
8:44/mi
1:49:46
↑ 106↓ 860.1%
Half· 13.11 mi
8:36/mi
1:55:38
↑ 19↓ 370.5%
25K· 15.53 mi
8:43/mi
2:16:46
↑ 66↓ 880.2%
30K· 18.64 mi
9:19/mi
2:45:42
↑ 181↓ 1480.2%
20M
10:13/mi
2:59:35
↑ 64↓ 500.2%
21M
10:06/mi
3:09:41
↑ 106↓ 241.6%
35K· 21.75 mi
9:23/mi
3:16:42
↑ 17↓ 861.7%
23M
9:59/mi
3:29:12
↑ 23↓ 630.6%
24M
9:32/mi
3:38:44
↓ 821.3%
40K· 24.85 mi
9:52/mi
3:47:10
↓ 200.3%
25.2M
10:38/mi
3:50:50
↑ 13↓ 160.2%
Finish· 26.22 mi
9:18/mi
4:00:19
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:55:38
Pace8:49 /mi
2nd Half
Distance13.11 mi
Time2:04:41
Pace9:31 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:47:0229:249:2829:24
9:28
-
10K
6.21 mi12:13:5556:179:0326:53
8:39
-0:49
15K
9.32 mi12:40:151:22:378:5226:20
8:29
-0:10
20K
12.43 mi13:07:241:49:468:5027:09
8:44
+0:15
Half
13.11 mi13:13:161:55:388:495:52
8:36
-0:08
25K
15.53 mi13:34:242:16:468:4821:08
8:43
+0:07
30K
18.64 mi14:03:202:45:428:5328:56
9:19
+0:36
20M
20.00 mi14:17:132:59:358:5913:53
10:13
+0:54
21M
21.00 mi14:27:193:09:419:0210:06
10:06
-0:07
35K
21.75 mi14:34:203:16:429:037:01
9:23
-0:43
23M
23.00 mi14:46:503:29:129:0612:30
9:59
+0:36
24M
24.00 mi14:56:223:38:449:079:32
9:32
-0:27
40K
24.85 mi15:04:483:47:109:088:26
9:52
+0:20
25.2M
25.20 mi15:08:283:50:509:103:40
10:38
+0:46
Finish
26.22 mi15:17:574:00:199:109:29
9:18
-1:20

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

8:29 /mi

Average Pace

9:10 /mi

Slowest Pace

10:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:47:22

45% of race

Time at Steady Pace

1:24:22

35% of race

Time at Slower Pace

48:35

20% of race

Average Pace: 9:10 /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 mi11:47:0229:249:2829:24
9:28
#24118
10K
6.21 mi12:13:5556:179:0326:53
8:39
#22651
15K
9.32 mi12:40:151:22:378:5226:20
8:29
#21608
20K
12.43 mi13:07:241:49:468:5027:09
8:44
#21080
Half
13.11 mi13:13:161:55:388:495:52
8:36
#21028
25K
15.53 mi13:34:242:16:468:4821:08
8:43
#20650
30K
18.64 mi14:03:202:45:428:5328:56
9:19
#20326
20M
20.00 mi14:17:132:59:358:5913:53
10:13
#20460
21M
21.00 mi14:27:193:09:419:0210:06
10:06
#20346
35K
21.75 mi14:34:203:16:429:037:01
9:23
#20322
23M
23.00 mi14:46:503:29:129:0612:30
9:59
#20357
24M
24.00 mi14:56:223:38:449:079:32
9:32
#20355
40K
24.85 mi15:04:483:47:109:088:26
9:52
#20358
25.2M
25.20 mi15:08:283:50:509:103:40
10:38
#20362
Finish
26.22 mi15:17:574:00:199:109:29
9:18
#20397
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi24118142951429519182(Top 68%)12135(Top 75%)12135(Top 215%)
10K6.21 mi3.10 mi22651+146713626+66913626+66920615(Top 73%)12748(Top 79%)12748(Top 226%)
15K9.32 mi3.11 mi21608+104313179+44713179+44719182(Top 68%)12135(Top 75%)12135(Top 215%)
20K12.43 mi3.11 mi21080+52812947+23212947+23219618(Top 69%)12290(Top 76%)12290(Top 218%)
Half13.11 mi0.68 mi21028+5212924+2312924+2319795(Top 70%)12388(Top 77%)12388(Top 220%)
25K15.53 mi2.42 mi20650+37812746+17812746+17818495(Top 65%)11745(Top 73%)11745(Top 208%)
30K18.64 mi3.11 mi20326+32412555+19112555+19119167(Top 67%)11911(Top 74%)11911(Top 211%)
20M20.00 mi1.36 mi20460-13412592-3712592-3721607(Top 76%)12863(Top 80%)12863(Top 228%)
21M21.00 mi1.00 mi20346+11412519+7312519+7318665(Top 66%)11457(Top 71%)11457(Top 203%)
35K21.75 mi0.75 mi20322+2412495+2412495+2419868(Top 70%)11909(Top 74%)11909(Top 211%)
23M23.00 mi1.25 mi20357-3512484+1112484+1120418(Top 72%)12118(Top 75%)12118(Top 215%)
24M24.00 mi1.00 mi20355+212474+1012474+1019728(Top 69%)11738(Top 73%)11738(Top 208%)
40K24.85 mi0.85 mi20358-312456+1812456+1819986(Top 70%)11784(Top 73%)11784(Top 209%)
25.2M25.20 mi0.35 mi20362-412453+312453+319467(Top 69%)11541(Top 72%)11541(Top 205%)
Finish26.22 mi1.02 mi20397-3512455-212455-220396(Top 72%)12007(Top 75%)12007(Top 213%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 68%
×21story building
+97ft-345ft

Overall

19182

Males

12135

M18-39

12135

5K→10K

3.1 - 6.2 mi

Top 73%
×5story building
+79ft-138ft

Overall

20615

Males

12748

M18-39

12748

10K→15K

6.2 - 9.3 mi

Top 68%
×3story building
+67ft-78ft

Overall

19182

Males

12135

M18-39

12135

15K→20K

9.3 - 12.4 mi

Top 69%
×5story building
+106ft-86ft

Overall

19618

Males

12290

M18-39

12290

20K→Half

12.4 - 13.1 mi

Top 70%
×2story building
+19ft-37ft

Overall

19795

Males

12388

M18-39

12388

Half→25K

13.1 - 15.5 mi

Top 65%
×4story building
+66ft-88ft

Overall

18495

Males

11745

M18-39

11745

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

19167

Males

11911

M18-39

11911

30K→20M

18.6 - 20.0 mi

Top 76%
×5story building
+64ft-50ft

Overall

21607

Males

12863

M18-39

12863

20M→21M

20.0 - 21.0 mi

Top 66%
×8story building
+106ft-24ft

Overall

18665

Males

11457

M18-39

11457

21M→35K

21.0 - 21.8 mi

Top 70%
×7story building
+17ft-86ft

Overall

19868

Males

11909

M18-39

11909

35K→23M

21.8 - 23.0 mi

Top 72%
×5story building
+23ft-63ft

Overall

20418

Males

12118

M18-39

12118

23M→24M

23.0 - 24.0 mi

Top 69%
×6story building
+12ft-82ft

Overall

19728

Males

11738

M18-39

11738

24M→40K

24.0 - 24.9 mi

Top 70%
×1story
+6ft-20ft

Overall

19986

Males

11784

M18-39

11784

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

19467

Males

11541

M18-39

11541

25.2M→Finish

25.2 - 26.2 mi

Top 72%
×2story building
+22ft-21ft

Overall

20396

Males

12007

M18-39

12007

Passing Analysis

Category:
Athletes Passed
4436
Passed By
715
Net Change
+3721
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#24118
5K → 10K14692+1467#24118#22651
10K → 15K10474+1043#22651#21608
15K → 20K54618+528#21608#21080
20K → Half6614+52#21080#21028
Half → 25K38911+378#21028#20650
25K → 30K38460+324#20650#20326
30K → 20M63197-134#20326#20460
20M → 21M14935+114#20460#20346
21M → 35K6541+24#20346#20322
35K → 23M80115-35#20322#20357
23M → 24M5553+2#20357#20355
24M → 40K5861-3#20355#20358
40K → 25.2M2226-4#20358#20362
25.2M → Finish4378-35#20362#20397
TOTALS4436715+3721
📊

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