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BOSTON MARATHON 2026

Jeffrey Mastro

Bib: 11585•M

AZ

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Male)
#0 / 16340
Masters (Masters Men)
#0 / 10617
Age Group (M55-59)
#0 / 1491
Race Day Weather
51°/41°F
overcast clouds

Race Timeline and Course Information

Your journey through the course with elevation, pacing, and checkpoint details

⏱️ Race Timeline

Watch your race unfold from start to finish

Start
0:00:00
Race begins
5K
28:30
3.11 mi
Rank: #23369
Start → 5K
28:30 | 9:11/mi
10K
56:11
6.21 mi
Rank: #22923 (+446)
5K → 10K
27:41 | 8:55/mi
15K
1:25:04
9.32 mi
Rank: #23257 (-334)
10K → 15K
28:53 | 9:18/mi
20K
1:54:51
12.43 mi
Rank: #23516 (-259)
15K → 20K
29:47 | 9:36/mi
HALF
2:01:05
13.11 mi
Rank: #23509 (+7)
20K → HALF
6:14 | 9:09/mi
25K
2:24:49
15.53 mi
Rank: #23520 (-11)
HALF → 25K
23:44 | 9:48/mi
30K
2:55:18
18.64 mi
Rank: #23346 (+174)
25K → 30K
30:29 | 9:49/mi
20M
3:08:37
20.00 mi
Rank: #23225 (+121)
30K → 20M
13:19 | 9:49/mi
21M
3:19:52
21.00 mi
Rank: #23227 (-2)
20M → 21M
11:15 | 11:15/mi
35K
3:26:49
21.75 mi
Rank: #23140 (+87)
21M → 35K
6:57 | 9:18/mi
23M
3:39:31
23.00 mi
Rank: #23088 (+52)
35K → 23M
12:42 | 10:09/mi
24M
3:49:08
24.00 mi
Rank: #23017 (+71)
23M → 24M
9:37 | 9:37/mi
40K
3:57:46
24.85 mi
Rank: #22979 (+38)
24M → 40K
8:38 | 10:06/mi
25.2M
4:02:05
25.20 mi
Rank: #23029 (-50)
40K → 25.2M
4:19 | 12:32/mi
FINISH
4:11:37
26.22 mi
Rank: #22973 (+56)
25.2M → FINISH
9:32 | 9:22/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time2:01:05
Pace9:15 /mi
2nd Half
Distance13.11 mi
Time2:10:32
Pace9:58 /mi
📊Positive Split: 7.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:48:5028:309:1128:30
9:11
-
10K
6.21 mi11:16:3156:119:0327:41
8:55
-0:16
15K
9.32 mi11:45:241:25:049:0828:53
9:18
+0:23
20K
12.43 mi12:15:111:54:519:1529:47
9:36
+0:18
HALF
13.11 mi12:21:252:01:059:156:14
9:09
-0:27
25K
15.53 mi12:45:092:24:499:2023:44
9:48
+0:39
30K
18.64 mi13:15:382:55:189:2530:29
9:49
+0:01
20M
20.00 mi13:28:573:08:379:2613:19
9:49
0:00
21M
21.00 mi13:40:123:19:529:3211:15
11:15
+1:26
35K
21.75 mi13:47:093:26:499:316:57
9:18
-1:57
23M
23.00 mi13:59:513:39:319:3312:42
10:09
+0:51
24M
24.00 mi14:09:283:49:089:339:37
9:37
-0:32
40K
24.85 mi14:18:063:57:469:348:38
10:06
+0:29
25.2M
25.20 mi14:22:254:02:059:374:19
12:32
+2:26
FINISH
26.22 mi14:31:574:11:379:379:32
9:22
-3:10

Checkpoint Splits Visualizations

Explore your race data through different visual perspectives. Scroll to discover each visualization.

📈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

8:55 /mi

Average Pace

9:36 /mi

Slowest Pace

12:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Bar length shows time spent in each segment. Colors mark your faster to slower segments, relative to your own pace.

Time at Faster Pace

33:55

13% of race

Time at Steady Pace

3:00:48

72% of race

Time at Slower Pace

36:54

15% of race

Average Pace: 9:36 /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

Enhanced split table showing pace trends through mini sparkline visualizations.

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:48:5028:309:1128:30
9:11
#23369
10K
6.21 mi11:16:3156:119:0327:41
8:55
#22923
15K
9.32 mi11:45:241:25:049:0828:53
9:18
#23257
20K
12.43 mi12:15:111:54:519:1529:47
9:36
#23516
HALF
13.11 mi12:21:252:01:059:156:14
9:09
#23509
25K
15.53 mi12:45:092:24:499:2023:44
9:48
#23520
30K
18.64 mi13:15:382:55:189:2530:29
9:49
#23346
20M
20.00 mi13:28:573:08:379:2613:19
9:49
#23225
21M
21.00 mi13:40:123:19:529:3211:15
11:15
#23227
35K
21.75 mi13:47:093:26:499:316:57
9:18
#23140
23M
23.00 mi13:59:513:39:319:3312:42
10:09
#23088
24M
24.00 mi14:09:283:49:089:339:37
9:37
#23017
40K
24.85 mi14:18:063:57:469:348:38
10:06
#22979
25.2M
25.20 mi14:22:254:02:059:374:19
12:32
#23029
FINISH
26.22 mi14:31:574:11:379:379:32
9:22
#22973
Faster pace
Steady pace
Slower pace

Rankings

Your position at each checkpoint and how you ranked in each segment

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi23369139201392023830(Top 82%)14167(Top 87%)14167(Top 950%)
10K6.21 mi3.10 mi22923+44613709+21113709+21122440(Top 77%)13475(Top 82%)13475(Top 904%)
15K9.32 mi3.11 mi23257-33413881-17213881-17223830(Top 82%)14167(Top 87%)14167(Top 950%)
20K12.43 mi3.11 mi23516-25914006-12514006-12523994(Top 83%)14223(Top 87%)14223(Top 954%)
HALF13.11 mi0.68 mi23509+714005+114005+123267(Top 80%)13879(Top 85%)13879(Top 931%)
25K15.53 mi2.42 mi23520-1113989+1613989+1623770(Top 82%)14074(Top 86%)14074(Top 944%)
30K18.64 mi3.11 mi23346+17413856+13313856+13322597(Top 78%)13431(Top 82%)13431(Top 901%)
20M20.00 mi1.36 mi23225+12113785+7113785+7122029(Top 76%)13082(Top 80%)13082(Top 877%)
21M21.00 mi1.00 mi23227-213769+1613769+1623641(Top 81%)13777(Top 84%)13777(Top 924%)
35K21.75 mi0.75 mi23140+8713720+4913720+4921113(Top 73%)12548(Top 77%)12548(Top 842%)
23M23.00 mi1.25 mi23088+5213688+3213688+3222527(Top 78%)13179(Top 81%)13179(Top 884%)
24M24.00 mi1.00 mi23017+7113647+4113647+4121710(Top 75%)12732(Top 78%)12732(Top 854%)
40K24.85 mi0.85 mi22979+3813620+2713620+2722197(Top 76%)12913(Top 79%)12913(Top 866%)
25.2M25.20 mi0.35 mi23029-5013639-1913639-1925339(Top 87%)14451(Top 88%)14451(Top 969%)
FINISH26.22 mi1.02 mi22973+5613603+3613603+3621850(Top 75%)12787(Top 78%)12787(Top 858%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21
+97ft-345ft

Overall

23830

Males

14167

M55-59

14167

5K→10K

3.1 - 6.2 mi

Top 77%
×5
+79ft-138ft

Overall

22440

Males

13475

M55-59

13475

10K→15K

6.2 - 9.3 mi

Top 82%
×3
+67ft-78ft

Overall

23830

Males

14167

M55-59

14167

15K→20K

9.3 - 12.4 mi

Top 83%
×5
+106ft-86ft

Overall

23994

Males

14223

M55-59

14223

20K→HALF

12.4 - 13.1 mi

Top 80%
×2
+19ft-37ft

Overall

23267

Males

13879

M55-59

13879

HALF→25K

13.1 - 15.5 mi

Top 82%
×4
+66ft-88ft

Overall

23770

Males

14074

M55-59

14074

25K→30K

15.5 - 18.6 mi

Top 78%
×9
+181ft-148ft

Overall

22597

Males

13431

M55-59

13431

30K→20M

18.6 - 20.0 mi

Top 76%
×5
+64ft-50ft

Overall

22029

Males

13082

M55-59

13082

20M→21M

20.0 - 21.0 mi

Top 81%
×8
+106ft-24ft

Overall

23641

Males

13777

M55-59

13777

21M→35K

21.0 - 21.8 mi

Top 73%
×7
+17ft-86ft

Overall

21113

Males

12548

M55-59

12548

35K→23M

21.8 - 23.0 mi

Top 78%
×5
+23ft-63ft

Overall

22527

Males

13179

M55-59

13179

23M→24M

23.0 - 24.0 mi

Top 75%
×6
+12ft-82ft

Overall

21710

Males

12732

M55-59

12732

24M→40K

24.0 - 24.9 mi

Top 76%
×1
+6ft-20ft

Overall

22197

Males

12913

M55-59

12913

40K→25.2M

24.9 - 25.2 mi

Top 87%
×1
+13ft-16ft

Overall

25339

Males

14451

M55-59

14451

25.2M→FINISH

25.2 - 26.2 mi

Top 75%
×2
+22ft-21ft

Overall

21850

Males

12787

M55-59

12787

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Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1665
Passed By
1269
Net Change
+396
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23369
5K → 10K53690+446#23369#22923
10K → 15K70404-334#22923#23257
15K → 20K75334-259#23257#23516
20K → HALF2821+7#23516#23509
HALF → 25K109120-11#23509#23520
25K → 30K23561+174#23520#23346
30K → 20M14524+121#23346#23225
20M → 21M6971-2#23225#23227
21M → 35K925+87#23227#23140
35K → 23M8432+52#23140#23088
23M → 24M8716+71#23088#23017
24M → 40K5416+38#23017#22979
40K → 25.2M858-50#22979#23029
25.2M → FINISH7317+56#23029#22973
TOTALS16651269+396

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📊

Passing Analysis Visualizations

Explore your passing analysis through 5 different visualizations. Scroll to discover each one.

Time:
Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Qualifying & Age Grade

See how your performance stacks up against qualifying standards

OTQ

Olympic Trials Qualifying analysis available

Activity Data

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing