Boston Marathon logo
BOSTON MARATHON 2023

Sean Theriault

Bib: 31653•M

ON

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M45-49)
#0 / 2252
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ 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
8:38/mi
26:48
↑ 97↓ 3451.5%
10K· 6.21 mi
8:30/mi
53:12
↑ 79↓ 1380.4%
15K· 9.32 mi
8:30/mi
1:19:37
↑ 67↓ 78
20K· 12.43 mi
8:42/mi
1:46:39
↑ 106↓ 860.1%
Half· 13.11 mi
8:48/mi
1:52:39
↑ 19↓ 370.5%
25K· 15.53 mi
9:18/mi
2:15:13
↑ 66↓ 880.2%
30K· 18.64 mi
10:17/mi
2:47:09
↑ 181↓ 1480.2%
20M
11:24/mi
3:02:39
↑ 64↓ 500.2%
21M
12:07/mi
3:14:46
↑ 106↓ 241.6%
35K· 21.75 mi
10:19/mi
3:22:29
↑ 17↓ 861.7%
23M
11:01/mi
3:36:17
↑ 23↓ 630.6%
24M
10:55/mi
3:47:12
↓ 821.3%
40K· 24.85 mi
12:48/mi
3:58:09
↓ 200.3%
25.2M
13:32/mi
4:02:49
↑ 13↓ 160.2%
Finish· 26.22 mi
11:19/mi
4:14:21
↑ 22↓ 21

The Course

Is this your race?

Claim it — unlock a deeper AI report on this race, free

A personalized Race Performance Report that goes beyond this page — emailed to you, built from your real splits.

Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:52:39
Pace8:36 /mi
2nd Half
Distance13.11 mi
Time2:21:42
Pace10:49 /mi
📊Positive Split: 25.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:4426:488:3826:48
8:38
-
10K
6.21 mi12:13:0853:128:3426:24
8:30
-0:08
15K
9.32 mi12:39:331:19:378:3326:25
8:30
0:00
20K
12.43 mi13:06:351:46:398:3527:02
8:42
+0:12
Half
13.11 mi13:12:351:52:398:366:00
8:48
+0:06
25K
15.53 mi13:35:092:15:138:4222:34
9:18
+0:30
30K
18.64 mi14:07:052:47:098:5831:56
10:17
+0:59
20M
20.00 mi14:22:353:02:399:0815:30
11:24
+1:07
21M
21.00 mi14:34:423:14:469:1612:07
12:07
+0:43
35K
21.75 mi14:42:253:22:299:197:43
10:19
-1:48
23M
23.00 mi14:56:133:36:179:2413:48
11:01
+0:42
24M
24.00 mi15:07:083:47:129:2810:55
10:55
-0:06
40K
24.85 mi15:18:053:58:099:3510:57
12:48
+1:53
25.2M
25.20 mi15:22:454:02:499:384:40
13:32
+0:44
Finish
26.22 mi15:34:174:14:219:4211:32
11:19
-2:13

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

8:30 /mi

Average Pace

9:42 /mi

Slowest Pace

13:32 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:15:13

53% of race

Time at Steady Pace

1:04:22

25% of race

Time at Slower Pace

54:46

22% of race

Average Pace: 9:42 /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 mi11:46:4426:488:3826:48
8:38
#18385
10K
6.21 mi12:13:0853:128:3426:24
8:30
#18268
15K
9.32 mi12:39:331:19:378:3326:25
8:30
#18121
20K
12.43 mi13:06:351:46:398:3527:02
8:42
#18098
Half
13.11 mi13:12:351:52:398:366:00
8:48
#18164
25K
15.53 mi13:35:092:15:138:4222:34
9:18
#18599
30K
18.64 mi14:07:052:47:098:5831:56
10:17
#19432
20M
20.00 mi14:22:353:02:399:0815:30
11:24
#19969
21M
21.00 mi14:34:423:14:469:1612:07
12:07
#20236
35K
21.75 mi14:42:253:22:299:197:43
10:19
#20311
23M
23.00 mi14:56:133:36:179:2413:48
11:01
#20474
24M
24.00 mi15:07:083:47:129:2810:55
10:55
#20619
40K
24.85 mi15:18:053:58:099:3510:57
12:48
#20884
25.2M
25.20 mi15:22:454:02:499:384:40
13:32
#20999
Finish
26.22 mi15:34:174:14:219:4211:32
11:19
#21190
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi18385115661156617828(Top 67%)11409(Top 75%)11409(Top 507%)
10K6.21 mi3.10 mi18268+11711572-611572-618229(Top 68%)11601(Top 76%)11601(Top 515%)
15K9.32 mi3.11 mi18121+14711504+6811504+6817828(Top 67%)11409(Top 75%)11409(Top 507%)
20K12.43 mi3.11 mi18098+2311509-511509-518132(Top 68%)11532(Top 76%)11532(Top 512%)
Half13.11 mi0.68 mi18164-6611534-2511534-2519449(Top 73%)12090(Top 80%)12090(Top 537%)
25K15.53 mi2.42 mi18599-43511686-15211686-15220222(Top 76%)12382(Top 82%)12382(Top 550%)
30K18.64 mi3.11 mi19432-83312022-33612022-33621725(Top 82%)12951(Top 85%)12951(Top 575%)
20M20.00 mi1.36 mi19969-53712227-20512227-20523359(Top 88%)13621(Top 90%)13621(Top 605%)
21M21.00 mi1.00 mi20236-26712329-10212329-10222926(Top 86%)13391(Top 88%)13391(Top 595%)
35K21.75 mi0.75 mi20311-7512354-2512354-2522014(Top 83%)12930(Top 85%)12930(Top 574%)
23M23.00 mi1.25 mi20474-16312415-6112415-6122382(Top 84%)13100(Top 86%)13100(Top 582%)
24M24.00 mi1.00 mi20619-14512461-4612461-4622879(Top 86%)13286(Top 88%)13286(Top 590%)
40K24.85 mi0.85 mi20884-26512571-11012571-11024766(Top 93%)14187(Top 93%)14187(Top 630%)
25.2M25.20 mi0.35 mi20999-11512615-4412615-4424535(Top 92%)14054(Top 93%)14054(Top 624%)
Finish26.22 mi1.02 mi21190-19112700-8512700-8524441(Top 92%)14042(Top 93%)14042(Top 624%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 67%
×21story building
+97ft-345ft

Overall

17828

Males

11409

M45-49

11409

5K→10K

3.1 - 6.2 mi

Top 68%
×5story building
+79ft-138ft

Overall

18229

Males

11601

M45-49

11601

10K→15K

6.2 - 9.3 mi

Top 67%
×3story building
+67ft-78ft

Overall

17828

Males

11409

M45-49

11409

15K→20K

9.3 - 12.4 mi

Top 68%
×5story building
+106ft-86ft

Overall

18132

Males

11532

M45-49

11532

20K→Half

12.4 - 13.1 mi

Top 73%
×2story building
+19ft-37ft

Overall

19449

Males

12090

M45-49

12090

Half→25K

13.1 - 15.5 mi

Top 76%
×4story building
+66ft-88ft

Overall

20222

Males

12382

M45-49

12382

25K→30K

15.5 - 18.6 mi

Top 82%
×9story building
+181ft-148ft

Overall

21725

Males

12951

M45-49

12951

30K→20M

18.6 - 20.0 mi

Top 88%
×5story building
+64ft-50ft

Overall

23359

Males

13621

M45-49

13621

20M→21M

20.0 - 21.0 mi

Top 86%
×8story building
+106ft-24ft

Overall

22926

Males

13391

M45-49

13391

21M→35K

21.0 - 21.8 mi

Top 83%
×7story building
+17ft-86ft

Overall

22014

Males

12930

M45-49

12930

35K→23M

21.8 - 23.0 mi

Top 84%
×5story building
+23ft-63ft

Overall

22382

Males

13100

M45-49

13100

23M→24M

23.0 - 24.0 mi

Top 86%
×6story building
+12ft-82ft

Overall

22879

Males

13286

M45-49

13286

24M→40K

24.0 - 24.9 mi

Top 93%
×1story
+6ft-20ft

Overall

24766

Males

14187

M45-49

14187

40K→25.2M

24.9 - 25.2 mi

Top 92%
×1story
+13ft-16ft

Overall

24535

Males

14054

M45-49

14054

25.2M→Finish

25.2 - 26.2 mi

Top 92%
×2story building
+22ft-21ft

Overall

24441

Males

14042

M45-49

14042

Passing Analysis

Category:
Athletes Passed
1011
Passed By
3816
Net Change
-2805
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#18385
5K → 10K384267+117#18385#18268
10K → 15K266119+147#18268#18121
15K → 20K177154+23#18121#18098
20K → Half1076-66#18098#18164
Half → 25K42477-435#18164#18599
25K → 30K23856-833#18599#19432
30K → 20M16553-537#19432#19969
20M → 21M20287-267#19969#20236
21M → 35K2095-75#20236#20311
35K → 23M23186-163#20311#20474
23M → 24M16161-145#20474#20619
24M → 40K3268-265#20619#20884
40K → 25.2M1116-115#20884#20999
25.2M → Finish10201-191#20999#21190
TOTALS10113816-2805
📊

Passing Visuals

Category:
Loading...

🔄Passing Circle

Loading...

🌊Position Flow

Loading...

🏃Race Lanes

Loading...

Upload your GPX file

Supports Garmin, Apple Watch, Polar, Suunto, COROS, Strava, and other apps

.gpx files up to 10MB

Export Track Data

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

Questions or issues regarding timing data?

If you notice any discrepancies in your timing data or have questions about your results, our support team can help.

Contact Race Support

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing