Boston Marathon logo
BOSTON MARATHON 2023

Thomas Byrne

Bib: 5130•M

MA

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 14%
Gender (Male)
#0 / 15176
Top 23%
Division (M18-39)
#0 / 5285
Top 48%
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
21:37
Rank: #5966
Start → 5K
21:37 | 6:57/mi
10K· 6.21 mi
42:39
Rank: #5518 (+448)
5K → 10K
21:02 | 6:46/mi
15K· 9.32 mi
1:03:58
Rank: #5569 (-51)
10K → 15K
21:19 | 6:52/mi
20K· 12.43 mi
1:25:05
Rank: #5287 (+282)
15K → 20K
21:07 | 6:48/mi
Half· 13.11 mi
1:29:38
Rank: #5231 (+56)
20K → Half
4:33 | 6:40/mi
25K· 15.53 mi
1:46:02
Rank: #4947 (+284)
Half → 25K
16:24 | 6:46/mi
30K· 18.64 mi
2:07:21
Rank: #4590 (+357)
25K → 30K
21:19 | 6:52/mi
20M
2:16:37
Rank: #4428 (+162)
30K → 20M
9:16 | 6:49/mi
21M
2:23:42
Rank: #4242 (+186)
20M → 21M
7:05 | 7:05/mi
35K· 21.75 mi
2:28:44
Rank: #4208 (+34)
21M → 35K
5:02 | 6:44/mi
23M
2:37:16
Rank: #4086 (+122)
35K → 23M
8:32 | 6:49/mi
24M
2:43:47
Rank: #3960 (+126)
23M → 24M
6:31 | 6:31/mi
40K· 24.85 mi
2:49:33
Rank: #3861 (+99)
24M → 40K
5:46 | 6:45/mi
25.2M
2:52:03
Rank: #3823 (+38)
40K → 25.2M
2:30 | 7:15/mi
Finish· 26.22 mi
2:58:51
Rank: #3796 (+27)
25.2M → Finish
6:48 | 6:40/mi

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 Half⚖️ Balanced
Distance13.11 mi
Time1:29:38
Pace6:50 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:29:13
Pace6:48 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:24:1221:376:5721:37
6:57
-
10K
6.21 mi10:45:1442:396:5221:02
6:46
-0:11
15K
9.32 mi11:06:331:03:586:5221:19
6:52
+0:06
20K
12.43 mi11:27:401:25:056:5121:07
6:48
-0:04
Half
13.11 mi11:32:131:29:386:504:33
6:40
-0:08
25K
15.53 mi11:48:371:46:026:5016:24
6:46
+0:06
30K
18.64 mi12:09:562:07:216:5021:19
6:52
+0:06
20M
20.00 mi12:19:122:16:376:509:16
6:49
-0:03
21M
21.00 mi12:26:172:23:426:517:05
7:05
+0:16
35K
21.75 mi12:31:192:28:446:505:02
6:44
-0:21
23M
23.00 mi12:39:512:37:166:508:32
6:49
+0:05
24M
24.00 mi12:46:222:43:476:496:31
6:31
-0:18
40K
24.85 mi12:52:082:49:336:495:46
6:45
+0:14
25.2M
25.20 mi12:54:382:52:036:502:30
7:15
+0:30
Finish
26.22 mi13:01:262:58:516:506:48
6:40
-0:35

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

6:31 /mi

Average Pace

6:50 /mi

Slowest Pace

7:15 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:56:21

99% of race

Time at Steady Pace

2:30

1% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:49 /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 mi10:24:1221:376:5721:37
6:57
#5966
10K
6.21 mi10:45:1442:396:5221:02
6:46
#5518
15K
9.32 mi11:06:331:03:586:5221:19
6:52
#5569
20K
12.43 mi11:27:401:25:056:5121:07
6:48
#5287
Half
13.11 mi11:32:131:29:386:504:33
6:40
#5231
25K
15.53 mi11:48:371:46:026:5016:24
6:46
#4947
30K
18.64 mi12:09:562:07:216:5021:19
6:52
#4590
20M
20.00 mi12:19:122:16:376:509:16
6:49
#4428
21M
21.00 mi12:26:172:23:426:517:05
7:05
#4242
35K
21.75 mi12:31:192:28:446:505:02
6:44
#4208
23M
23.00 mi12:39:512:37:166:508:32
6:49
#4086
24M
24.00 mi12:46:222:43:476:496:31
6:31
#3960
40K
24.85 mi12:52:082:49:336:495:46
6:45
#3861
25.2M
25.20 mi12:54:382:52:036:502:30
7:15
#3823
Finish
26.22 mi13:01:262:58:516:506:48
6:40
#3796
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5966545854585639(Top 21%)5176(Top 34%)5176(Top 98%)
10K6.21 mi3.10 mi5518+4485089+3695089+3694977(Top 19%)4609(Top 30%)4609(Top 87%)
15K9.32 mi3.11 mi5569-515130-415130-415639(Top 21%)5176(Top 34%)5176(Top 98%)
20K12.43 mi3.11 mi5287+2824894+2364894+2364395(Top 17%)4101(Top 27%)4101(Top 78%)
Half13.11 mi0.68 mi5231+564848+464848+464029(Top 15%)3781(Top 25%)3781(Top 72%)
25K15.53 mi2.42 mi4947+2844599+2494599+2493840(Top 14%)3612(Top 24%)3612(Top 68%)
30K18.64 mi3.11 mi4590+3574280+3194280+3193391(Top 13%)3191(Top 21%)3191(Top 60%)
20M20.00 mi1.36 mi4428+1624134+1464134+1462951(Top 11%)2776(Top 18%)2776(Top 53%)
21M21.00 mi1.00 mi4242+1863971+1633971+1632568(Top 10%)2426(Top 16%)2426(Top 46%)
35K21.75 mi0.75 mi4208+343938+333938+333720(Top 14%)3437(Top 23%)3437(Top 65%)
23M23.00 mi1.25 mi4086+1223827+1113827+1112757(Top 10%)2583(Top 17%)2583(Top 49%)
24M24.00 mi1.00 mi3960+1263710+1173710+1172183(Top 8%)2049(Top 14%)2049(Top 39%)
40K24.85 mi0.85 mi3861+993623+873623+872576(Top 10%)2390(Top 16%)2390(Top 45%)
25.2M25.20 mi0.35 mi3823+383592+313592+312743(Top 10%)2529(Top 17%)2529(Top 48%)
Finish26.22 mi1.02 mi3796+273564+283564+283356(Top 13%)3014(Top 20%)3014(Top 57%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21stories
+97ft-345ft

Overall

5639

Males

5176

M18-39

5176

5K→10K

3.1 - 6.2 mi

Top 19%
×5stories
+79ft-138ft

Overall

4977

Males

4609

M18-39

4609

10K→15K

6.2 - 9.3 mi

Top 21%
×3stories
+67ft-78ft

Overall

5639

Males

5176

M18-39

5176

15K→20K

9.3 - 12.4 mi

Top 17%
×5stories
+106ft-86ft

Overall

4395

Males

4101

M18-39

4101

20K→Half

12.4 - 13.1 mi

Top 15%
×2stories
+19ft-37ft

Overall

4029

Males

3781

M18-39

3781

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3840

Males

3612

M18-39

3612

25K→30K

15.5 - 18.6 mi

Top 13%
×9stories
+181ft-148ft

Overall

3391

Males

3191

M18-39

3191

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

2951

Males

2776

M18-39

2776

20M→21M

20.0 - 21.0 mi

Top 10%
×8stories
+106ft-24ft

Overall

2568

Males

2426

M18-39

2426

21M→35K

21.0 - 21.8 mi

Top 14%
×7stories
+17ft-86ft

Overall

3720

Males

3437

M18-39

3437

35K→23M

21.8 - 23.0 mi

Top 10%
×5stories
+23ft-63ft

Overall

2757

Males

2583

M18-39

2583

23M→24M

23.0 - 24.0 mi

Top 8%
×6stories
+12ft-82ft

Overall

2183

Males

2049

M18-39

2049

24M→40K

24.0 - 24.9 mi

Top 10%
×1story
+6ft-20ft

Overall

2576

Males

2390

M18-39

2390

40K→25.2M

24.9 - 25.2 mi

Top 10%
×1story
+13ft-16ft

Overall

2743

Males

2529

M18-39

2529

25.2M→Finish

25.2 - 26.2 mi

Top 13%
×2stories
+22ft-21ft

Overall

3356

Males

3014

M18-39

3014

Passing Analysis

Category:
Athletes Passed
2494
Passed By
324
Net Change
+2170
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5966
5K → 10K50658+448#5966#5518
10K → 15K97148-51#5518#5569
15K → 20K2908+282#5569#5287
20K → Half615+56#5287#5231
Half → 25K2895+284#5231#4947
25K → 30K37013+357#4947#4590
30K → 20M1653+162#4590#4428
20M → 21M1904+186#4428#4242
21M → 35K4915+34#4242#4208
35K → 23M13210+122#4208#4086
23M → 24M1315+126#4086#3960
24M → 40K1067+99#3960#3861
40K → 25.2M457+38#3861#3823
25.2M → Finish6336+27#3823#3796
TOTALS2494324+2170
📊

Passing Visuals

Category:
Loading...

🔥Passing Intensity

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing