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BOSTON MARATHON 2026

Mary Cass

Bib: 25215•F

MA

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0:00
0:00
/ mi
Masters
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Overall
#0 / 29021
Gender (Female)
#0 / 12578
Masters (Masters Women)
#0 / 6862
Age Group (F60-64)
#0 / 782
Top 40%
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
26:27
3.11 mi
Rank: #20175
Start → 5K
26:27 | 8:31/mi
10K
53:58
6.21 mi
Rank: #21239 (-1064)
5K → 10K
27:31 | 8:52/mi
15K
1:22:29
9.32 mi
Rank: #22001 (-762)
10K → 15K
28:31 | 9:11/mi
20K
1:51:34
12.43 mi
Rank: #22387 (-386)
15K → 20K
29:05 | 9:22/mi
HALF
1:57:49
13.11 mi
Rank: #22433 (-46)
20K → HALF
6:15 | 9:11/mi
25K
2:20:40
15.53 mi
Rank: #22511 (-78)
HALF → 25K
22:51 | 9:26/mi
30K
2:51:10
18.64 mi
Rank: #22564 (-53)
25K → 30K
30:30 | 9:50/mi
20M
3:05:07
20.00 mi
Rank: #22631 (-67)
30K → 20M
13:57 | 10:17/mi
21M
3:15:55
21.00 mi
Rank: #22619 (+12)
20M → 21M
10:48 | 10:48/mi
35K
3:22:53
21.75 mi
Rank: #22575 (+44)
21M → 35K
6:58 | 9:19/mi
23M
3:34:59
23.00 mi
Rank: #22468 (+107)
35K → 23M
12:06 | 9:41/mi
24M
3:44:23
24.00 mi
Rank: #22406 (+62)
23M → 24M
9:24 | 9:24/mi
40K
3:52:34
24.85 mi
Rank: #22324 (+82)
24M → 40K
8:11 | 9:35/mi
25.2M
3:56:13
25.20 mi
Rank: #22309 (+15)
40K → 25.2M
3:39 | 10:36/mi
FINISH
4:05:21
26.22 mi
Rank: #22236 (+73)
25.2M → FINISH
9:08 | 8:58/mi

Splits & Pacing

Detailed breakdown of your race performance at each timing point

Half Splits

1st HalfFaster
via HALF
Distance13.11 mi
Time1:57:49
Pace9:00 /mi
2nd Half
Distance13.11 mi
Time2:07:32
Pace9:44 /mi
📊Positive Split: 8.2% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:32:0126:278:3126:27
8:31
-
10K
6.21 mi11:59:3253:588:4227:31
8:52
+0:21
15K
9.32 mi12:28:031:22:298:5128:31
9:11
+0:19
20K
12.43 mi12:57:081:51:348:5929:05
9:22
+0:11
HALF
13.11 mi13:03:231:57:499:006:15
9:11
-0:11
25K
15.53 mi13:26:142:20:409:0422:51
9:26
+0:15
30K
18.64 mi13:56:442:51:109:1130:30
9:50
+0:24
20M
20.00 mi14:10:413:05:079:1613:57
10:17
+0:27
21M
21.00 mi14:21:293:15:559:2010:48
10:48
+0:31
35K
21.75 mi14:28:273:22:539:206:58
9:19
-1:29
23M
23.00 mi14:40:333:34:599:2112:06
9:41
+0:22
24M
24.00 mi14:49:573:44:239:219:24
9:24
-0:17
40K
24.85 mi14:58:083:52:349:228:11
9:35
+0:11
25.2M
25.20 mi15:01:473:56:139:233:39
10:36
+1:01
FINISH
26.22 mi15:10:554:05:219:229:08
8:58
-1:38

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

8:31 /mi

Average Pace

9:22 /mi

Slowest Pace

10:48 /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

1:03:06

26% of race

Time at Steady Pace

2:03:21

50% of race

Time at Slower Pace

58:54

24% of race

Average Pace: 9:21 /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 mi11:32:0126:278:3126:27
8:31
#20175
10K
6.21 mi11:59:3253:588:4227:31
8:52
#21239
15K
9.32 mi12:28:031:22:298:5128:31
9:11
#22001
20K
12.43 mi12:57:081:51:348:5929:05
9:22
#22387
HALF
13.11 mi13:03:231:57:499:006:15
9:11
#22433
25K
15.53 mi13:26:142:20:409:0422:51
9:26
#22511
30K
18.64 mi13:56:442:51:109:1130:30
9:50
#22564
20M
20.00 mi14:10:413:05:079:1613:57
10:17
#22631
21M
21.00 mi14:21:293:15:559:2010:48
10:48
#22619
35K
21.75 mi14:28:273:22:539:206:58
9:19
#22575
23M
23.00 mi14:40:333:34:599:2112:06
9:41
#22468
24M
24.00 mi14:49:573:44:239:219:24
9:24
#22406
40K
24.85 mi14:58:083:52:349:228:11
9:35
#22324
25.2M
25.20 mi15:01:473:56:139:233:39
10:36
#22309
FINISH
26.22 mi15:10:554:05:219:229:08
8:58
#22236
Faster pace
Steady pace
Slower pace

Rankings

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

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallFemalesF60-64Seg. OverallSeg. FemalesSeg. F60-64
5K3.11 mi3.11 mi201757733773323427(Top 81%)9367(Top 74%)9367(Top 1198%)
10K6.21 mi3.10 mi21239-10648278-5458278-54522193(Top 76%)8754(Top 70%)8754(Top 1119%)
15K9.32 mi3.11 mi22001-7628658-3808658-38023427(Top 81%)9367(Top 74%)9367(Top 1198%)
20K12.43 mi3.11 mi22387-3868850-1928850-19223321(Top 80%)9352(Top 74%)9352(Top 1196%)
HALF13.11 mi0.68 mi22433-468875-258875-2523377(Top 81%)9352(Top 74%)9352(Top 1196%)
25K15.53 mi2.42 mi22511-788911-368911-3622792(Top 79%)9094(Top 72%)9094(Top 1163%)
30K18.64 mi3.11 mi22564-538985-748985-7422620(Top 78%)9085(Top 72%)9085(Top 1162%)
20M20.00 mi1.36 mi22631-679028-439028-4323281(Top 80%)9518(Top 76%)9518(Top 1217%)
21M21.00 mi1.00 mi22619+129038-109038-1022682(Top 78%)9247(Top 74%)9247(Top 1182%)
35K21.75 mi0.75 mi22575+449020+189020+1821231(Top 73%)8563(Top 68%)8563(Top 1095%)
23M23.00 mi1.25 mi22468+1078987+338987+3321169(Top 73%)8566(Top 68%)8566(Top 1095%)
24M24.00 mi1.00 mi22406+628965+228965+2221014(Top 72%)8552(Top 68%)8552(Top 1094%)
40K24.85 mi0.85 mi22324+828938+278938+2720660(Top 71%)8411(Top 67%)8411(Top 1076%)
25.2M25.20 mi0.35 mi22309+158937+18937+121358(Top 74%)8758(Top 70%)8758(Top 1120%)
FINISH26.22 mi1.02 mi22236+738909+288909+2820393(Top 70%)8286(Top 66%)8286(Top 1060%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 81%
×21
+97ft-345ft

Overall

23427

Females

9367

F60-64

9367

5K→10K

3.1 - 6.2 mi

Top 76%
×5
+79ft-138ft

Overall

22193

Females

8754

F60-64

8754

10K→15K

6.2 - 9.3 mi

Top 81%
×3
+67ft-78ft

Overall

23427

Females

9367

F60-64

9367

15K→20K

9.3 - 12.4 mi

Top 80%
×5
+106ft-86ft

Overall

23321

Females

9352

F60-64

9352

20K→HALF

12.4 - 13.1 mi

Top 81%
×2
+19ft-37ft

Overall

23377

Females

9352

F60-64

9352

HALF→25K

13.1 - 15.5 mi

Top 79%
×4
+66ft-88ft

Overall

22792

Females

9094

F60-64

9094

25K→30K

15.5 - 18.6 mi

Top 78%
×9
+181ft-148ft

Overall

22620

Females

9085

F60-64

9085

30K→20M

18.6 - 20.0 mi

Top 80%
×5
+64ft-50ft

Overall

23281

Females

9518

F60-64

9518

20M→21M

20.0 - 21.0 mi

Top 78%
×8
+106ft-24ft

Overall

22682

Females

9247

F60-64

9247

21M→35K

21.0 - 21.8 mi

Top 73%
×7
+17ft-86ft

Overall

21231

Females

8563

F60-64

8563

35K→23M

21.8 - 23.0 mi

Top 73%
×5
+23ft-63ft

Overall

21169

Females

8566

F60-64

8566

23M→24M

23.0 - 24.0 mi

Top 72%
×6
+12ft-82ft

Overall

21014

Females

8552

F60-64

8552

24M→40K

24.0 - 24.9 mi

Top 71%
×1
+6ft-20ft

Overall

20660

Females

8411

F60-64

8411

40K→25.2M

24.9 - 25.2 mi

Top 74%
×1
+13ft-16ft

Overall

21358

Females

8758

F60-64

8758

25.2M→FINISH

25.2 - 26.2 mi

Top 70%
×2
+22ft-21ft

Overall

20393

Females

8286

F60-64

8286

Passing

Athletes you passed and who passed you throughout the race

Passing Analysis

Category:
Athletes Passed
1038
Passed By
3099
Net Change
-2061
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#20175
5K → 10K441108-1064#20175#21239
10K → 15K27789-762#21239#22001
15K → 20K74460-386#22001#22387
20K → HALF1359-46#22387#22433
HALF → 25K102180-78#22433#22511
25K → 30K165218-53#22511#22564
30K → 20M59126-67#22564#22631
20M → 21M7462+12#22631#22619
21M → 35K6420+44#22619#22575
35K → 23M13225+107#22575#22468
23M → 24M7513+62#22468#22406
24M → 40K10119+82#22406#22324
40K → 25.2M2510+15#22324#22309
25.2M → FINISH8310+73#22309#22236
TOTALS10383099-2061
📊

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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Export & Support

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Download your race performance as a GPX or TCX file to import into Strava, Garmin Connect, or other fitness apps.

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing