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BOSTON MARATHON 2025

Mark St. Cyr

Bib: 21591•M

LA

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M60-64)
#0 / 1259
Top 33%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
8:01/mi
24:53
↑ 97↓ 3451.5%
10K· 6.21 mi
8:11/mi
50:18
↑ 79↓ 1380.4%
15K· 9.32 mi
8:18/mi
1:16:06
↑ 67↓ 78
20K· 12.43 mi
8:23/mi
1:42:10
↑ 106↓ 860.1%
Half· 13.11 mi
8:02/mi
1:47:39
↑ 19↓ 370.5%
25K· 15.53 mi
8:26/mi
2:08:06
↑ 66↓ 880.2%
30K· 18.64 mi
8:47/mi
2:35:24
↑ 181↓ 1480.2%
20M
8:46/mi
2:47:19
↑ 64↓ 500.2%
21M
9:32/mi
2:56:51
↑ 106↓ 241.6%
35K· 21.75 mi
8:19/mi
3:03:04
↑ 17↓ 861.7%
23M
8:37/mi
3:13:51
↑ 23↓ 630.6%
24M
8:20/mi
3:22:11
↓ 821.3%
40K· 24.85 mi
8:32/mi
3:29:29
↓ 200.3%
25.2M
9:23/mi
3:32:43
↑ 13↓ 160.2%
Finish· 26.22 mi
8:24/mi
3:41:17
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:47:39
Pace8:13 /mi
2nd Half
Distance13.11 mi
Time1:53:38
Pace8:40 /mi
📊Positive Split: 5.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:1024:538:0124:53
8:01
-
10K
6.21 mi11:45:3550:188:0625:25
8:11
+0:10
15K
9.32 mi12:11:231:16:068:1025:48
8:18
+0:07
20K
12.43 mi12:37:271:42:108:1326:04
8:23
+0:05
Half
13.11 mi12:42:561:47:398:135:29
8:02
-0:21
25K
15.53 mi13:03:232:08:068:1520:27
8:26
+0:24
30K
18.64 mi13:30:412:35:248:2027:18
8:47
+0:21
20M
20.00 mi13:42:362:47:198:2211:55
8:46
-0:01
21M
21.00 mi13:52:082:56:518:259:32
9:32
+0:46
35K
21.75 mi13:58:213:03:048:256:13
8:19
-1:13
23M
23.00 mi14:09:083:13:518:2610:47
8:37
+0:18
24M
24.00 mi14:17:283:22:118:258:20
8:20
-0:17
40K
24.85 mi14:24:463:29:298:267:18
8:32
+0:12
25.2M
25.20 mi14:28:003:32:438:263:14
9:23
+0:51
Finish
26.22 mi14:36:343:41:178:278:34
8:24
-0:59

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

8:01 /mi

Average Pace

8:27 /mi

Slowest Pace

9:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

3:28:31

94% of race

Time at Steady Pace

3:14

1% of race

Time at Slower Pace

9:32

4% of race

Average Pace: 8:26 /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 mi11:20:1024:538:0124:53
8:01
#16655
10K
6.21 mi11:45:3550:188:0625:25
8:11
#17218
15K
9.32 mi12:11:231:16:068:1025:48
8:18
#17520
20K
12.43 mi12:37:271:42:108:1326:04
8:23
#17484
Half
13.11 mi12:42:561:47:398:135:29
8:02
#17397
25K
15.53 mi13:03:232:08:068:1520:27
8:26
#17252
30K
18.64 mi13:30:412:35:248:2027:18
8:47
#17060
20M
20.00 mi13:42:362:47:198:2211:55
8:46
#16919
21M
21.00 mi13:52:082:56:518:259:32
9:32
#16839
35K
21.75 mi13:58:213:03:048:256:13
8:19
#16735
23M
23.00 mi14:09:083:13:518:2610:47
8:37
#16522
24M
24.00 mi14:17:283:22:118:258:20
8:20
#16373
40K
24.85 mi14:24:463:29:298:267:18
8:32
#16260
25.2M
25.20 mi14:28:003:32:438:263:14
9:23
#16219
Finish
26.22 mi14:36:343:41:178:278:34
8:24
#16197
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi16655110581105818070(Top 64%)11654(Top 72%)11654(Top 926%)
10K6.21 mi3.10 mi17218-56311308-25011308-25017744(Top 62%)11546(Top 72%)11546(Top 917%)
15K9.32 mi3.11 mi17520-30211444-13611444-13618070(Top 64%)11654(Top 72%)11654(Top 926%)
20K12.43 mi3.11 mi17484+3611411+3311411+3317478(Top 62%)11386(Top 71%)11386(Top 904%)
Half13.11 mi0.68 mi17397+8711366+4511366+4516152(Top 57%)10825(Top 67%)10825(Top 860%)
25K15.53 mi2.42 mi17252+14511287+7911287+7916760(Top 59%)10988(Top 68%)10988(Top 873%)
30K18.64 mi3.11 mi17060+19211153+13411153+13416508(Top 58%)10718(Top 67%)10718(Top 851%)
20M20.00 mi1.36 mi16919+14111078+7511078+7515471(Top 54%)10134(Top 63%)10134(Top 805%)
21M21.00 mi1.00 mi16839+8011013+6511013+6516207(Top 57%)10342(Top 64%)10342(Top 821%)
35K21.75 mi0.75 mi16735+10410953+6010953+6014290(Top 50%)9420(Top 58%)9420(Top 748%)
23M23.00 mi1.25 mi16522+21310830+12310830+12314002(Top 49%)9175(Top 57%)9175(Top 729%)
24M24.00 mi1.00 mi16373+14910739+9110739+9113475(Top 47%)8894(Top 55%)8894(Top 706%)
40K24.85 mi0.85 mi16260+11310667+7210667+7213668(Top 48%)8849(Top 55%)8849(Top 703%)
25.2M25.20 mi0.35 mi16219+4110641+2610641+2613855(Top 49%)8889(Top 55%)8889(Top 706%)
Finish26.22 mi1.02 mi16197+2210615+2610615+2615601(Top 55%)9755(Top 61%)9755(Top 775%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 64%
×21story building
+97ft-345ft

Overall

18070

Males

11654

M60-64

11654

5K→10K

3.1 - 6.2 mi

Top 62%
×5story building
+79ft-138ft

Overall

17744

Males

11546

M60-64

11546

10K→15K

6.2 - 9.3 mi

Top 64%
×3story building
+67ft-78ft

Overall

18070

Males

11654

M60-64

11654

15K→20K

9.3 - 12.4 mi

Top 62%
×5story building
+106ft-86ft

Overall

17478

Males

11386

M60-64

11386

20K→Half

12.4 - 13.1 mi

Top 57%
×2story building
+19ft-37ft

Overall

16152

Males

10825

M60-64

10825

Half→25K

13.1 - 15.5 mi

Top 59%
×4story building
+66ft-88ft

Overall

16760

Males

10988

M60-64

10988

25K→30K

15.5 - 18.6 mi

Top 58%
×9story building
+181ft-148ft

Overall

16508

Males

10718

M60-64

10718

30K→20M

18.6 - 20.0 mi

Top 54%
×5story building
+64ft-50ft

Overall

15471

Males

10134

M60-64

10134

20M→21M

20.0 - 21.0 mi

Top 57%
×8story building
+106ft-24ft

Overall

16207

Males

10342

M60-64

10342

21M→35K

21.0 - 21.8 mi

Top 50%
×7story building
+17ft-86ft

Overall

14290

Males

9420

M60-64

9420

35K→23M

21.8 - 23.0 mi

Top 49%
×5story building
+23ft-63ft

Overall

14002

Males

9175

M60-64

9175

23M→24M

23.0 - 24.0 mi

Top 47%
×6story building
+12ft-82ft

Overall

13475

Males

8894

M60-64

8894

24M→40K

24.0 - 24.9 mi

Top 48%
×1story
+6ft-20ft

Overall

13668

Males

8849

M60-64

8849

40K→25.2M

24.9 - 25.2 mi

Top 49%
×1story
+13ft-16ft

Overall

13855

Males

8889

M60-64

8889

25.2M→Finish

25.2 - 26.2 mi

Top 55%
×2story building
+22ft-21ft

Overall

15601

Males

9755

M60-64

9755

Passing Analysis

Category:
Athletes Passed
2174
Passed By
1716
Net Change
+458
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16655
5K → 10K121684-563#16655#17218
10K → 15K111413-302#17218#17520
15K → 20K204168+36#17520#17484
20K → Half947+87#17484#17397
Half → 25K23489+145#17397#17252
25K → 30K312120+192#17252#17060
30K → 20M17130+141#17060#16919
20M → 21M14767+80#16919#16839
21M → 35K12016+104#16839#16735
35K → 23M22916+213#16735#16522
23M → 24M16516+149#16522#16373
24M → 40K13320+113#16373#16260
40K → 25.2M5110+41#16260#16219
25.2M → Finish8260+22#16219#16197
TOTALS21741716+458
📊

Passing Visuals

Category:
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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