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BOSTON MARATHON 2025

Brian Rensing

Bib: 10700•M

FL

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Top 36%
Gender (Male)
#0 / 16105
Top 49%
Masters (Masters Men)
#0 / 10463
Top 39%
Division (M55-59)
#0 / 1648
Top 21%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:50
Rank: #10840
Start → 5K
22:50 | 7:21/mi
10K· 6.21 mi
45:35
Rank: #10634 (+206)
5K → 10K
22:45 | 7:19/mi
15K· 9.32 mi
1:08:28
Rank: #10602 (+32)
10K → 15K
22:53 | 7:22/mi
20K· 12.43 mi
1:32:07
Rank: #10860 (-258)
15K → 20K
23:39 | 7:37/mi
Half· 13.11 mi
1:37:15
Rank: #10907 (-47)
20K → Half
5:08 | 7:31/mi
25K· 15.53 mi
1:55:36
Rank: #10819 (+88)
Half → 25K
18:21 | 7:34/mi
30K· 18.64 mi
2:19:33
Rank: #10456 (+363)
25K → 30K
23:57 | 7:43/mi
20M
2:30:21
Rank: #10404 (+52)
30K → 20M
10:48 | 7:57/mi
21M
2:38:41
Rank: #10293 (+111)
20M → 21M
8:20 | 8:20/mi
35K· 21.75 mi
2:44:31
Rank: #10320 (-27)
21M → 35K
5:50 | 7:48/mi
23M
2:54:38
Rank: #10292 (+28)
35K → 23M
10:07 | 8:05/mi
24M
3:02:40
Rank: #10319 (-27)
23M → 24M
8:02 | 8:02/mi
40K· 24.85 mi
3:09:39
Rank: #10314 (+5)
24M → 40K
6:59 | 8:10/mi
25.2M
3:12:41
Rank: #10317 (-3)
40K → 25.2M
3:02 | 8:48/mi
Finish· 26.22 mi
3:20:46
Rank: #10366 (-49)
25.2M → Finish
8:05 | 7:56/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:37:15
Pace7:25 /mi
2nd Half
Distance13.11 mi
Time1:43:31
Pace7:54 /mi
📊Positive Split: 6.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:4922:507:2122:50
7:21
-
10K
6.21 mi11:12:3445:357:2022:45
7:19
-0:02
15K
9.32 mi11:35:271:08:287:2122:53
7:22
+0:03
20K
12.43 mi11:59:061:32:077:2523:39
7:37
+0:15
Half
13.11 mi12:04:141:37:157:255:08
7:31
-0:06
25K
15.53 mi12:22:351:55:367:2618:21
7:34
+0:03
30K
18.64 mi12:46:322:19:337:2923:57
7:43
+0:09
20M
20.00 mi12:57:202:30:217:3110:48
7:57
+0:14
21M
21.00 mi13:05:402:38:417:338:20
8:20
+0:23
35K
21.75 mi13:11:302:44:317:345:50
7:48
-0:32
23M
23.00 mi13:21:372:54:387:3610:07
8:05
+0:17
24M
24.00 mi13:29:393:02:407:378:02
8:02
-0:03
40K
24.85 mi13:36:383:09:397:386:59
8:10
+0:08
25.2M
25.20 mi13:39:403:12:417:393:02
8:48
+0:38
Finish
26.22 mi13:47:453:20:467:408:05
7:56
-0:52

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

7:19 /mi

Average Pace

7:40 /mi

Slowest Pace

8:48 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:31:57

46% of race

Time at Steady Pace

1:12:19

36% of race

Time at Slower Pace

36:30

18% of race

Average Pace: 7:39 /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 mi10:49:4922:507:2122:50
7:21
#10840
10K
6.21 mi11:12:3445:357:2022:45
7:19
#10634
15K
9.32 mi11:35:271:08:287:2122:53
7:22
#10602
20K
12.43 mi11:59:061:32:077:2523:39
7:37
#10860
Half
13.11 mi12:04:141:37:157:255:08
7:31
#10907
25K
15.53 mi12:22:351:55:367:2618:21
7:34
#10819
30K
18.64 mi12:46:322:19:337:2923:57
7:43
#10456
20M
20.00 mi12:57:202:30:217:3110:48
7:57
#10404
21M
21.00 mi13:05:402:38:417:338:20
8:20
#10293
35K
21.75 mi13:11:302:44:317:345:50
7:48
#10320
23M
23.00 mi13:21:372:54:387:3610:07
8:05
#10292
24M
24.00 mi13:29:393:02:407:378:02
8:02
#10319
40K
24.85 mi13:36:383:09:397:386:59
8:10
#10314
25.2M
25.20 mi13:39:403:12:417:393:02
8:48
#10317
Finish
26.22 mi13:47:453:20:467:408:05
7:56
#10366
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi108408611861110526(Top 37%)8365(Top 52%)8365(Top 508%)
10K6.21 mi3.10 mi10634+2068477+1348477+13410521(Top 37%)8421(Top 52%)8421(Top 511%)
15K9.32 mi3.11 mi10602+328448+298448+2910526(Top 37%)8365(Top 52%)8365(Top 508%)
20K12.43 mi3.11 mi10860-2588562-1148562-11411678(Top 41%)8822(Top 55%)8822(Top 535%)
Half13.11 mi0.68 mi10907-478582-208582-2011832(Top 42%)8940(Top 56%)8940(Top 542%)
25K15.53 mi2.42 mi10819+888494+888494+8810489(Top 37%)8141(Top 51%)8141(Top 494%)
30K18.64 mi3.11 mi10456+3638248+2468248+2469247(Top 33%)7285(Top 45%)7285(Top 442%)
20M20.00 mi1.36 mi10404+528176+728176+7210074(Top 35%)7584(Top 47%)7584(Top 460%)
21M21.00 mi1.00 mi10293+1118079+978079+979428(Top 33%)7064(Top 44%)7064(Top 429%)
35K21.75 mi0.75 mi10320-278070+98070+910761(Top 38%)7743(Top 48%)7743(Top 470%)
23M23.00 mi1.25 mi10292+288006+648006+6410597(Top 37%)7533(Top 47%)7533(Top 457%)
24M24.00 mi1.00 mi10319-277995+117995+1111458(Top 40%)7879(Top 49%)7879(Top 478%)
40K24.85 mi0.85 mi10314+57956+397956+3911337(Top 40%)7728(Top 48%)7728(Top 469%)
25.2M25.20 mi0.35 mi10317-37942+147942+1410550(Top 37%)7242(Top 45%)7242(Top 439%)
Finish26.22 mi1.02 mi10366-497939+37939+312387(Top 44%)8220(Top 51%)8220(Top 499%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 37%
×21stories
+97ft-345ft

Overall

10526

Males

8365

M55-59

8365

5K→10K

3.1 - 6.2 mi

Top 37%
×5stories
+79ft-138ft

Overall

10521

Males

8421

M55-59

8421

10K→15K

6.2 - 9.3 mi

Top 37%
×3stories
+67ft-78ft

Overall

10526

Males

8365

M55-59

8365

15K→20K

9.3 - 12.4 mi

Top 41%
×5stories
+106ft-86ft

Overall

11678

Males

8822

M55-59

8822

20K→Half

12.4 - 13.1 mi

Top 42%
×2stories
+19ft-37ft

Overall

11832

Males

8940

M55-59

8940

Half→25K

13.1 - 15.5 mi

Top 37%
×4stories
+66ft-88ft

Overall

10489

Males

8141

M55-59

8141

25K→30K

15.5 - 18.6 mi

Top 33%
×9stories
+181ft-148ft

Overall

9247

Males

7285

M55-59

7285

30K→20M

18.6 - 20.0 mi

Top 35%
×5stories
+64ft-50ft

Overall

10074

Males

7584

M55-59

7584

20M→21M

20.0 - 21.0 mi

Top 33%
×8stories
+106ft-24ft

Overall

9428

Males

7064

M55-59

7064

21M→35K

21.0 - 21.8 mi

Top 38%
×7stories
+17ft-86ft

Overall

10761

Males

7743

M55-59

7743

35K→23M

21.8 - 23.0 mi

Top 37%
×5stories
+23ft-63ft

Overall

10597

Males

7533

M55-59

7533

23M→24M

23.0 - 24.0 mi

Top 40%
×6stories
+12ft-82ft

Overall

11458

Males

7879

M55-59

7879

24M→40K

24.0 - 24.9 mi

Top 40%
×1story
+6ft-20ft

Overall

11337

Males

7728

M55-59

7728

40K→25.2M

24.9 - 25.2 mi

Top 37%
×1story
+13ft-16ft

Overall

10550

Males

7242

M55-59

7242

25.2M→Finish

25.2 - 26.2 mi

Top 44%
×2stories
+22ft-21ft

Overall

12387

Males

8220

M55-59

8220

Passing Analysis

Category:
Athletes Passed
2022
Passed By
1548
Net Change
+474
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#10840
5K → 10K380174+206#10840#10634
10K → 15K180148+32#10634#10602
15K → 20K103361-258#10602#10860
20K → Half2269-47#10860#10907
Half → 25K200112+88#10907#10819
25K → 30K42057+363#10819#10456
30K → 20M14391+52#10456#10404
20M → 21M16150+111#10404#10293
21M → 35K5178-27#10293#10320
35K → 23M12395+28#10320#10292
23M → 24M6592-27#10292#10319
24M → 40K8681+5#10319#10314
40K → 25.2M2831-3#10314#10317
25.2M → Finish60109-49#10317#10366
TOTALS20221548+474
📊

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