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BOSTON MARATHON 2025

Keith Shields

Bib: 16722•M

MA

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:01
Rank: #19154
Start → 5K
26:01 | 8:22/mi
10K· 6.21 mi
53:04
Rank: #20074 (-920)
5K → 10K
27:03 | 8:42/mi
15K· 9.32 mi
1:20:29
Rank: #20392 (-318)
10K → 15K
27:25 | 8:49/mi
20K· 12.43 mi
1:48:01
Rank: #20361 (+31)
15K → 20K
27:32 | 8:52/mi
Half· 13.11 mi
1:53:58
Rank: #20369 (-8)
20K → Half
5:57 | 8:43/mi
25K· 15.53 mi
2:15:34
Rank: #20222 (+147)
Half → 25K
21:36 | 8:55/mi
30K· 18.64 mi
2:45:07
Rank: #20174 (+48)
25K → 30K
29:33 | 9:31/mi
20M
2:58:19
Rank: #20154 (+20)
30K → 20M
13:12 | 9:43/mi
21M
3:09:32
Rank: #20321 (-167)
20M → 21M
11:13 | 11:13/mi
35K· 21.75 mi
3:16:20
Rank: #20248 (+73)
21M → 35K
6:48 | 9:05/mi
23M
3:28:36
Rank: #20230 (+18)
35K → 23M
12:16 | 9:48/mi
24M
3:38:00
Rank: #20212 (+18)
23M → 24M
9:24 | 9:24/mi
40K· 24.85 mi
3:46:21
Rank: #20198 (+14)
24M → 40K
8:21 | 9:46/mi
25.2M
3:50:07
Rank: #20230 (-32)
40K → 25.2M
3:46 | 10:55/mi
Finish· 26.22 mi
3:59:28
Rank: #20248 (-18)
25.2M → Finish
9:21 | 9:11/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:53:58
Pace8:42 /mi
2nd Half
Distance13.11 mi
Time2:05:30
Pace9:34 /mi
📊Positive Split: 10.1% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:00:3226:018:2226:01
8:22
-
10K
6.21 mi11:27:3553:048:3227:03
8:42
+0:20
15K
9.32 mi11:55:001:20:298:3827:25
8:49
+0:07
20K
12.43 mi12:22:321:48:018:4227:32
8:52
+0:03
Half
13.11 mi12:28:291:53:588:425:57
8:43
-0:09
25K
15.53 mi12:50:052:15:348:4421:36
8:55
+0:12
30K
18.64 mi13:19:382:45:078:5129:33
9:31
+0:36
20M
20.00 mi13:32:502:58:198:5513:12
9:43
+0:12
21M
21.00 mi13:44:033:09:329:0211:13
11:13
+1:30
35K
21.75 mi13:50:513:16:209:026:48
9:05
-2:08
23M
23.00 mi14:03:073:28:369:0412:16
9:48
+0:43
24M
24.00 mi14:12:313:38:009:059:24
9:24
-0:24
40K
24.85 mi14:20:523:46:219:068:21
9:46
+0:22
25.2M
25.20 mi14:24:383:50:079:083:46
10:55
+1:09
Finish
26.22 mi14:33:593:59:289:089:21
9:11
-1:44

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

8:22 /mi

Average Pace

9:08 /mi

Slowest Pace

11:13 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

59:01

25% of race

Time at Steady Pace

2:11:39

55% of race

Time at Slower Pace

48:48

20% of race

Average Pace: 9:08 /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 mi11:00:3226:018:2226:01
8:22
#19154
10K
6.21 mi11:27:3553:048:3227:03
8:42
#20074
15K
9.32 mi11:55:001:20:298:3827:25
8:49
#20392
20K
12.43 mi12:22:321:48:018:4227:32
8:52
#20361
Half
13.11 mi12:28:291:53:588:425:57
8:43
#20369
25K
15.53 mi12:50:052:15:348:4421:36
8:55
#20222
30K
18.64 mi13:19:382:45:078:5129:33
9:31
#20174
20M
20.00 mi13:32:502:58:198:5513:12
9:43
#20154
21M
21.00 mi13:44:033:09:329:0211:13
11:13
#20321
35K
21.75 mi13:50:513:16:209:026:48
9:05
#20248
23M
23.00 mi14:03:073:28:369:0412:16
9:48
#20230
24M
24.00 mi14:12:313:38:009:059:24
9:24
#20212
40K
24.85 mi14:20:523:46:219:068:21
9:46
#20198
25.2M
25.20 mi14:24:383:50:079:083:46
10:55
#20230
Finish
26.22 mi14:33:593:59:289:089:21
9:11
#20248
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi19154121051210521137(Top 74%)13001(Top 81%)13001(Top 789%)
10K6.21 mi3.10 mi20074-92012501-39612501-39620897(Top 74%)12876(Top 80%)12876(Top 781%)
15K9.32 mi3.11 mi20392-31812639-13812639-13821137(Top 74%)13001(Top 81%)13001(Top 789%)
20K12.43 mi3.11 mi20361+3112623+1612623+1620273(Top 71%)12584(Top 78%)12584(Top 764%)
Half13.11 mi0.68 mi20369-812627-412627-420450(Top 72%)12666(Top 79%)12666(Top 769%)
25K15.53 mi2.42 mi20222+14712550+7712550+7719468(Top 69%)12178(Top 76%)12178(Top 739%)
30K18.64 mi3.11 mi20174+4812494+5612494+5619978(Top 70%)12275(Top 76%)12275(Top 745%)
20M20.00 mi1.36 mi20154+2012459+3512459+3519979(Top 70%)12148(Top 75%)12148(Top 737%)
21M21.00 mi1.00 mi20321-16712507-4812507-4821938(Top 77%)12942(Top 80%)12942(Top 785%)
35K21.75 mi0.75 mi20248+7312460+4712460+4718655(Top 66%)11333(Top 70%)11333(Top 688%)
23M23.00 mi1.25 mi20230+1812428+3212428+3219783(Top 70%)11801(Top 73%)11801(Top 716%)
24M24.00 mi1.00 mi20212+1812398+3012398+3019221(Top 68%)11514(Top 71%)11514(Top 699%)
40K24.85 mi0.85 mi20198+1412374+2412374+2419693(Top 69%)11658(Top 72%)11658(Top 707%)
25.2M25.20 mi0.35 mi20230-3212390-1612390-1620364(Top 72%)11964(Top 74%)11964(Top 726%)
Finish26.22 mi1.02 mi20248-1812386+412386+419836(Top 70%)11733(Top 73%)11733(Top 712%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 74%
×21stories
+97ft-345ft

Overall

21137

Males

13001

M55-59

13001

5K→10K

3.1 - 6.2 mi

Top 74%
×5stories
+79ft-138ft

Overall

20897

Males

12876

M55-59

12876

10K→15K

6.2 - 9.3 mi

Top 74%
×3stories
+67ft-78ft

Overall

21137

Males

13001

M55-59

13001

15K→20K

9.3 - 12.4 mi

Top 71%
×5stories
+106ft-86ft

Overall

20273

Males

12584

M55-59

12584

20K→Half

12.4 - 13.1 mi

Top 72%
×2stories
+19ft-37ft

Overall

20450

Males

12666

M55-59

12666

Half→25K

13.1 - 15.5 mi

Top 69%
×4stories
+66ft-88ft

Overall

19468

Males

12178

M55-59

12178

25K→30K

15.5 - 18.6 mi

Top 70%
×9stories
+181ft-148ft

Overall

19978

Males

12275

M55-59

12275

30K→20M

18.6 - 20.0 mi

Top 70%
×5stories
+64ft-50ft

Overall

19979

Males

12148

M55-59

12148

20M→21M

20.0 - 21.0 mi

Top 77%
×8stories
+106ft-24ft

Overall

21938

Males

12942

M55-59

12942

21M→35K

21.0 - 21.8 mi

Top 66%
×7stories
+17ft-86ft

Overall

18655

Males

11333

M55-59

11333

35K→23M

21.8 - 23.0 mi

Top 70%
×5stories
+23ft-63ft

Overall

19783

Males

11801

M55-59

11801

23M→24M

23.0 - 24.0 mi

Top 68%
×6stories
+12ft-82ft

Overall

19221

Males

11514

M55-59

11514

24M→40K

24.0 - 24.9 mi

Top 69%
×1story
+6ft-20ft

Overall

19693

Males

11658

M55-59

11658

40K→25.2M

24.9 - 25.2 mi

Top 72%
×1story
+13ft-16ft

Overall

20364

Males

11964

M55-59

11964

25.2M→Finish

25.2 - 26.2 mi

Top 70%
×2stories
+22ft-21ft

Overall

19836

Males

11733

M55-59

11733

Passing Analysis

Category:
Athletes Passed
1395
Passed By
2489
Net Change
-1094
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#19154
5K → 10K54974-920#19154#20074
10K → 15K99417-318#20074#20392
15K → 20K194163+31#20392#20361
20K → Half2836-8#20361#20369
Half → 25K23487+147#20369#20222
25K → 30K250202+48#20222#20174
30K → 20M10787+20#20174#20154
20M → 21M42209-167#20154#20321
21M → 35K8512+73#20321#20248
35K → 23M9981+18#20248#20230
23M → 24M6143+18#20230#20212
24M → 40K6551+14#20212#20198
40K → 25.2M2254-32#20198#20230
25.2M → Finish5573-18#20230#20248
TOTALS13952489-1094
📊

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