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BOSTON MARATHON 2025

René Constanza

Bib: 26321•M

NY

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M45-49)
#0 / 2386
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
28:08
Rank: #22657
Start → 5K
28:08 | 9:03/mi
10K· 6.21 mi
55:57
Rank: #22450 (+207)
5K → 10K
27:49 | 8:57/mi
15K· 9.32 mi
1:24:17
Rank: #22451 (-1)
10K → 15K
28:20 | 9:07/mi
20K· 12.43 mi
1:52:31
Rank: #22175 (+276)
15K → 20K
28:14 | 9:05/mi
Half· 13.11 mi
1:58:49
Rank: #22190 (-15)
20K → Half
6:18 | 9:14/mi
25K· 15.53 mi
2:21:32
Rank: #22043 (+147)
Half → 25K
22:43 | 9:22/mi
30K· 18.64 mi
2:51:47
Rank: #21825 (+218)
25K → 30K
30:15 | 9:44/mi
20M
3:05:15
Rank: #21732 (+93)
30K → 20M
13:28 | 9:55/mi
21M
3:15:51
Rank: #21636 (+96)
20M → 21M
10:36 | 10:36/mi
35K· 21.75 mi
3:23:21
Rank: #21649 (-13)
21M → 35K
7:30 | 10:01/mi
23M
3:35:54
Rank: #21573 (+76)
35K → 23M
12:33 | 10:01/mi
24M
3:45:58
Rank: #21564 (+9)
23M → 24M
10:04 | 10:04/mi
40K· 24.85 mi
3:54:40
Rank: #21534 (+30)
24M → 40K
8:42 | 10:11/mi
25.2M
3:58:21
Rank: #21497 (+37)
40K → 25.2M
3:41 | 10:41/mi
Finish· 26.22 mi
4:08:12
Rank: #21498 (-1)
25.2M → Finish
9:51 | 9:40/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:58:49
Pace9:04 /mi
2nd Half
Distance13.11 mi
Time2:09:23
Pace9:52 /mi
📊Positive Split: 8.9% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:43:1828:089:0328:08
9:03
-
10K
6.21 mi12:11:0755:579:0027:49
8:57
-0:06
15K
9.32 mi12:39:271:24:179:0328:20
9:07
+0:10
20K
12.43 mi13:07:411:52:319:0328:14
9:05
-0:02
Half
13.11 mi13:13:591:58:499:046:18
9:14
+0:09
25K
15.53 mi13:36:422:21:329:0722:43
9:22
+0:08
30K
18.64 mi14:06:572:51:479:1330:15
9:44
+0:22
20M
20.00 mi14:20:253:05:159:1613:28
9:55
+0:11
21M
21.00 mi14:31:013:15:519:2010:36
10:36
+0:41
35K
21.75 mi14:38:313:23:219:217:30
10:01
-0:35
23M
23.00 mi14:51:043:35:549:2312:33
10:01
0:00
24M
24.00 mi15:01:083:45:589:2510:04
10:04
+0:03
40K
24.85 mi15:09:503:54:409:268:42
10:11
+0:07
25.2M
25.20 mi15:13:313:58:219:283:41
10:41
+0:30
Finish
26.22 mi15:23:224:08:129:289:51
9:40
-1:01

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

8:57 /mi

Average Pace

9:28 /mi

Slowest Pace

10:41 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:01:38

73% of race

Time at Steady Pace

52:17

21% of race

Time at Slower Pace

14:17

6% of race

Average Pace: 9:28 /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 mi11:43:1828:089:0328:08
9:03
#22657
10K
6.21 mi12:11:0755:579:0027:49
8:57
#22450
15K
9.32 mi12:39:271:24:179:0328:20
9:07
#22451
20K
12.43 mi13:07:411:52:319:0328:14
9:05
#22175
Half
13.11 mi13:13:591:58:499:046:18
9:14
#22190
25K
15.53 mi13:36:422:21:329:0722:43
9:22
#22043
30K
18.64 mi14:06:572:51:479:1330:15
9:44
#21825
20M
20.00 mi14:20:253:05:159:1613:28
9:55
#21732
21M
21.00 mi14:31:013:15:519:2010:36
10:36
#21636
35K
21.75 mi14:38:313:23:219:217:30
10:01
#21649
23M
23.00 mi14:51:043:35:549:2312:33
10:01
#21573
24M
24.00 mi15:01:083:45:589:2510:04
10:04
#21564
40K
24.85 mi15:09:503:54:409:268:42
10:11
#21534
25.2M
25.20 mi15:13:313:58:219:283:41
10:41
#21497
Finish
26.22 mi15:23:224:08:129:289:51
9:40
#21498
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi22657136031360322533(Top 79%)13619(Top 85%)13619(Top 571%)
10K6.21 mi3.10 mi22450+20713523+8013523+8022167(Top 78%)13413(Top 83%)13413(Top 562%)
15K9.32 mi3.11 mi22451-113556-3313556-3322533(Top 79%)13619(Top 85%)13619(Top 571%)
20K12.43 mi3.11 mi22175+27613423+13313423+13321387(Top 75%)13077(Top 81%)13077(Top 548%)
Half13.11 mi0.68 mi22190-1513427-413427-422697(Top 80%)13644(Top 85%)13644(Top 572%)
25K15.53 mi2.42 mi22043+14713357+7013357+7021425(Top 75%)13048(Top 81%)13048(Top 547%)
30K18.64 mi3.11 mi21825+21813242+11513242+11520796(Top 73%)12627(Top 78%)12627(Top 529%)
20M20.00 mi1.36 mi21732+9313186+5613186+5620633(Top 73%)12421(Top 77%)12421(Top 521%)
21M21.00 mi1.00 mi21636+9613111+7513111+7520314(Top 72%)12181(Top 76%)12181(Top 511%)
35K21.75 mi0.75 mi21649-1313112-113112-121950(Top 77%)12876(Top 80%)12876(Top 540%)
23M23.00 mi1.25 mi21573+7613038+7413038+7420570(Top 72%)12188(Top 76%)12188(Top 511%)
24M24.00 mi1.00 mi21564+913019+1913019+1921533(Top 76%)12607(Top 78%)12607(Top 528%)
40K24.85 mi0.85 mi21534+3012986+3312986+3320998(Top 74%)12279(Top 76%)12279(Top 515%)
25.2M25.20 mi0.35 mi21497+3712964+2212964+2219641(Top 69%)11624(Top 72%)11624(Top 487%)
Finish26.22 mi1.02 mi21498-112946+1812946+1821781(Top 77%)12674(Top 79%)12674(Top 531%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 79%
×21stories
+97ft-345ft

Overall

22533

Males

13619

M45-49

13619

5K→10K

3.1 - 6.2 mi

Top 78%
×5stories
+79ft-138ft

Overall

22167

Males

13413

M45-49

13413

10K→15K

6.2 - 9.3 mi

Top 79%
×3stories
+67ft-78ft

Overall

22533

Males

13619

M45-49

13619

15K→20K

9.3 - 12.4 mi

Top 75%
×5stories
+106ft-86ft

Overall

21387

Males

13077

M45-49

13077

20K→Half

12.4 - 13.1 mi

Top 80%
×2stories
+19ft-37ft

Overall

22697

Males

13644

M45-49

13644

Half→25K

13.1 - 15.5 mi

Top 75%
×4stories
+66ft-88ft

Overall

21425

Males

13048

M45-49

13048

25K→30K

15.5 - 18.6 mi

Top 73%
×9stories
+181ft-148ft

Overall

20796

Males

12627

M45-49

12627

30K→20M

18.6 - 20.0 mi

Top 73%
×5stories
+64ft-50ft

Overall

20633

Males

12421

M45-49

12421

20M→21M

20.0 - 21.0 mi

Top 72%
×8stories
+106ft-24ft

Overall

20314

Males

12181

M45-49

12181

21M→35K

21.0 - 21.8 mi

Top 77%
×7stories
+17ft-86ft

Overall

21950

Males

12876

M45-49

12876

35K→23M

21.8 - 23.0 mi

Top 72%
×5stories
+23ft-63ft

Overall

20570

Males

12188

M45-49

12188

23M→24M

23.0 - 24.0 mi

Top 76%
×6stories
+12ft-82ft

Overall

21533

Males

12607

M45-49

12607

24M→40K

24.0 - 24.9 mi

Top 74%
×1story
+6ft-20ft

Overall

20998

Males

12279

M45-49

12279

40K→25.2M

24.9 - 25.2 mi

Top 69%
×1story
+13ft-16ft

Overall

19641

Males

11624

M45-49

11624

25.2M→Finish

25.2 - 26.2 mi

Top 77%
×2stories
+22ft-21ft

Overall

21781

Males

12674

M45-49

12674

Passing Analysis

Category:
Athletes Passed
2086
Passed By
927
Net Change
+1159
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#22657
5K → 10K371164+207#22657#22450
10K → 15K175176-1#22450#22451
15K → 20K32852+276#22451#22175
20K → Half2742-15#22175#22190
Half → 25K21972+147#22190#22043
25K → 30K31597+218#22043#21825
30K → 20M13542+93#21825#21732
20M → 21M13741+96#21732#21636
21M → 35K3851-13#21636#21649
35K → 23M12246+76#21649#21573
23M → 24M5445+9#21573#21564
24M → 40K6939+30#21564#21534
40K → 25.2M447+37#21534#21497
25.2M → Finish5253-1#21497#21498
TOTALS2086927+1159
📊

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