Boston Marathon logo
BOSTON MARATHON 2023

Thomas Fish

Bib: 14888•M

KS

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 46%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M50-54)
#0 / 2052
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
7:23/mi
22:55
↑ 97↓ 3451.5%
10K· 6.21 mi
7:09/mi
45:09
↑ 79↓ 1380.4%
15K· 9.32 mi
7:12/mi
1:07:31
↑ 67↓ 78
20K· 12.43 mi
8:05/mi
1:32:37
↑ 106↓ 860.1%
Half· 13.11 mi
7:18/mi
1:37:36
↑ 19↓ 370.5%
25K· 15.53 mi
7:20/mi
1:55:22
↑ 66↓ 880.2%
30K· 18.64 mi
7:40/mi
2:19:11
↑ 181↓ 1480.2%
20M
7:48/mi
2:29:47
↑ 64↓ 500.2%
21M
8:22/mi
2:38:09
↑ 106↓ 241.6%
35K· 21.75 mi
7:41/mi
2:43:54
↑ 17↓ 861.7%
23M
8:17/mi
2:54:16
↑ 23↓ 630.6%
24M
7:58/mi
3:02:14
↓ 821.3%
40K· 24.85 mi
13:35/mi
3:13:51
↓ 200.3%
25.2M
17:56/mi
3:20:02
↑ 13↓ 160.2%
Finish· 26.22 mi
10:03/mi
3:30:16
↑ 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
Time1:37:36
Pace7:27 /mi
2nd Half
Distance13.11 mi
Time1:52:40
Pace8:36 /mi
📊Positive Split: 15.4% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:51:4722:557:2322:55
7:23
-
10K
6.21 mi11:14:0145:097:1622:14
7:09
-0:14
15K
9.32 mi11:36:231:07:317:1522:22
7:12
+0:03
20K
12.43 mi12:01:291:32:377:2725:06
8:05
+0:53
Half
13.11 mi12:06:281:37:367:274:59
7:18
-0:47
25K
15.53 mi12:24:141:55:227:2617:46
7:20
+0:02
30K
18.64 mi12:48:032:19:117:2823:49
7:40
+0:20
20M
20.00 mi12:58:392:29:477:2910:36
7:48
+0:08
21M
21.00 mi13:07:012:38:097:328:22
8:22
+0:34
35K
21.75 mi13:12:462:43:547:325:45
7:41
-0:41
23M
23.00 mi13:23:082:54:167:3510:22
8:17
+0:36
24M
24.00 mi13:31:063:02:147:367:58
7:58
-0:19
40K
24.85 mi13:42:433:13:517:4811:37
13:35
+5:37
25.2M
25.20 mi13:48:543:20:027:566:11
17:56
+4:21
Finish
26.22 mi13:59:083:30:168:0210:14
10:03
-7:53

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

7:09 /mi

Average Pace

8:02 /mi

Slowest Pace

17:56 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

0:00

0% of race

Time at Steady Pace

3:02:14

87% of race

Time at Slower Pace

28:02

13% of race

Average Pace: 8:01 /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 mi10:51:4722:557:2322:55
7:23
#8647
10K
6.21 mi11:14:0145:097:1622:14
7:09
#8217
15K
9.32 mi11:36:231:07:317:1522:22
7:12
#8072
20K
12.43 mi12:01:291:32:377:2725:06
8:05
#9432
Half
13.11 mi12:06:281:37:367:274:59
7:18
#9388
25K
15.53 mi12:24:141:55:227:2617:46
7:20
#9033
30K
18.64 mi12:48:032:19:117:2823:49
7:40
#8887
20M
20.00 mi12:58:392:29:477:2910:36
7:48
#8867
21M
21.00 mi13:07:012:38:097:328:22
8:22
#8896
35K
21.75 mi13:12:462:43:547:325:45
7:41
#8918
23M
23.00 mi13:23:082:54:167:3510:22
8:17
#9052
24M
24.00 mi13:31:063:02:147:367:58
7:58
#9116
40K
24.85 mi13:42:433:13:517:4811:37
13:35
#10623
25.2M
25.20 mi13:48:543:20:027:566:11
17:56
#11683
Finish
26.22 mi13:59:083:30:168:0210:14
10:03
#12344
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi8647738873887791(Top 29%)6784(Top 45%)6784(Top 331%)
10K6.21 mi3.10 mi8217+4307098+2907098+2907815(Top 29%)6816(Top 45%)6816(Top 332%)
15K9.32 mi3.11 mi8072+1457000+987000+987791(Top 29%)6784(Top 45%)6784(Top 331%)
20K12.43 mi3.11 mi9432-13607815-8157815-81514073(Top 53%)9905(Top 65%)9905(Top 483%)
Half13.11 mi0.68 mi9388+447786+297786+298657(Top 33%)7321(Top 48%)7321(Top 357%)
25K15.53 mi2.42 mi9033+3557566+2207566+2207463(Top 28%)6465(Top 43%)6465(Top 315%)
30K18.64 mi3.11 mi8887+1467436+1307436+1308414(Top 32%)6936(Top 46%)6936(Top 338%)
20M20.00 mi1.36 mi8867+207405+317405+318863(Top 33%)7122(Top 47%)7122(Top 347%)
21M21.00 mi1.00 mi8896-297403+27403+29642(Top 36%)7429(Top 49%)7429(Top 362%)
35K21.75 mi0.75 mi8918-227404-17404-19850(Top 37%)7563(Top 50%)7563(Top 369%)
23M23.00 mi1.25 mi9052-1347452-487452-4811731(Top 44%)8349(Top 55%)8349(Top 407%)
24M24.00 mi1.00 mi9116-647464-127464-1210996(Top 41%)7900(Top 52%)7900(Top 385%)
40K24.85 mi0.85 mi10623-15078236-7728236-77225405(Top 95%)14511(Top 96%)14511(Top 707%)
25.2M25.20 mi0.35 mi11683-10608746-5108746-51026488(Top 99%)15090(Top 99%)15090(Top 735%)
Finish26.22 mi1.02 mi12344-6619009-2639009-26321861(Top 82%)12789(Top 84%)12789(Top 623%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 29%
×21story building
+97ft-345ft

Overall

7791

Males

6784

M50-54

6784

5K→10K

3.1 - 6.2 mi

Top 29%
×5story building
+79ft-138ft

Overall

7815

Males

6816

M50-54

6816

10K→15K

6.2 - 9.3 mi

Top 29%
×3story building
+67ft-78ft

Overall

7791

Males

6784

M50-54

6784

15K→20K

9.3 - 12.4 mi

Top 53%
×5story building
+106ft-86ft

Overall

14073

Males

9905

M50-54

9905

20K→Half

12.4 - 13.1 mi

Top 33%
×2story building
+19ft-37ft

Overall

8657

Males

7321

M50-54

7321

Half→25K

13.1 - 15.5 mi

Top 28%
×4story building
+66ft-88ft

Overall

7463

Males

6465

M50-54

6465

25K→30K

15.5 - 18.6 mi

Top 32%
×9story building
+181ft-148ft

Overall

8414

Males

6936

M50-54

6936

30K→20M

18.6 - 20.0 mi

Top 33%
×5story building
+64ft-50ft

Overall

8863

Males

7122

M50-54

7122

20M→21M

20.0 - 21.0 mi

Top 36%
×8story building
+106ft-24ft

Overall

9642

Males

7429

M50-54

7429

21M→35K

21.0 - 21.8 mi

Top 37%
×7story building
+17ft-86ft

Overall

9850

Males

7563

M50-54

7563

35K→23M

21.8 - 23.0 mi

Top 44%
×5story building
+23ft-63ft

Overall

11731

Males

8349

M50-54

8349

23M→24M

23.0 - 24.0 mi

Top 41%
×6story building
+12ft-82ft

Overall

10996

Males

7900

M50-54

7900

24M→40K

24.0 - 24.9 mi

Top 95%
×1story
+6ft-20ft

Overall

25405

Males

14511

M50-54

14511

40K→25.2M

24.9 - 25.2 mi

Top 99%
×1story
+13ft-16ft

Overall

26488

Males

15090

M50-54

15090

25.2M→Finish

25.2 - 26.2 mi

Top 82%
×2story building
+22ft-21ft

Overall

21861

Males

12789

M50-54

12789

Passing Analysis

Category:
Athletes Passed
1676
Passed By
5371
Net Change
-3697
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#8647
5K → 10K52292+430#8647#8217
10K → 15K21469+145#8217#8072
15K → 20K91369-1360#8072#9432
20K → Half506+44#9432#9388
Half → 25K3627+355#9388#9033
25K → 30K23892+146#9033#8887
30K → 20M8262+20#8887#8867
20M → 21M6998-29#8867#8896
21M → 35K3658-22#8896#8918
35K → 23M42176-134#8918#9052
23M → 24M44108-64#9052#9116
24M → 40K11506-1507#9116#10623
40K → 25.2M01060-1060#10623#11683
25.2M → Finish7668-661#11683#12344
TOTALS16765371-3697
📊

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