Boston Marathon logo
BOSTON MARATHON 2023

Andrew Tomlinson

Bib: 7517•M

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

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
26:31
Rank: #17780
Start → 5K
26:31 | 8:32/mi
10K· 6.21 mi
55:03
Rank: #19976 (-2196)
5K → 10K
28:32 | 9:11/mi
15K· 9.32 mi
1:22:15
Rank: #19726 (+250)
10K → 15K
27:12 | 8:45/mi
20K· 12.43 mi
1:49:47
Rank: #19505 (+221)
15K → 20K
27:32 | 8:52/mi
Half· 13.11 mi
1:55:11
Rank: #19246 (+259)
20K → Half
5:24 | 7:55/mi
25K· 15.53 mi
2:15:27
Rank: #18684 (+562)
Half → 25K
20:16 | 8:22/mi
30K· 18.64 mi
2:44:23
Rank: #18689 (-5)
25K → 30K
28:56 | 9:19/mi
20M
2:55:34
Rank: #18196 (+493)
30K → 20M
11:11 | 8:14/mi
21M
3:04:04
Rank: #17763 (+433)
20M → 21M
8:30 | 8:30/mi
35K· 21.75 mi
3:10:04
Rank: #17576 (+187)
21M → 35K
6:00 | 8:01/mi
23M
3:19:57
Rank: #17120 (+456)
35K → 23M
9:53 | 7:54/mi
24M
3:27:54
Rank: #16887 (+233)
23M → 24M
7:57 | 7:57/mi
40K· 24.85 mi
3:34:53
Rank: #16685 (+202)
24M → 40K
6:59 | 8:10/mi
25.2M
3:37:51
Rank: #16567 (+118)
40K → 25.2M
2:58 | 8:36/mi
Finish· 26.22 mi
3:45:53
Rank: #16339 (+228)
25.2M → Finish
8:02 | 7:53/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
Distance13.11 mi
Time1:55:11
Pace8:47 /mi
2nd Half✓ Faster
Distance13.11 mi
Time1:50:42
Pace8:27 /mi
📊Negative Split: 3.9% faster second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:32:3526:318:3226:31
8:32
-
10K
6.21 mi11:01:0755:038:5228:32
9:11
+0:39
15K
9.32 mi11:28:191:22:158:4927:12
8:45
-0:26
20K
12.43 mi11:55:511:49:478:5027:32
8:52
+0:07
Half
13.11 mi12:01:151:55:118:475:24
7:55
-0:57
25K
15.53 mi12:21:312:15:278:4320:16
8:22
+0:27
30K
18.64 mi12:50:272:44:238:4928:56
9:19
+0:57
20M
20.00 mi13:01:382:55:348:4711:11
8:14
-1:05
21M
21.00 mi13:10:083:04:048:468:30
8:30
+0:16
35K
21.75 mi13:16:083:10:048:446:00
8:01
-0:29
23M
23.00 mi13:26:013:19:578:429:53
7:54
-0:07
24M
24.00 mi13:33:583:27:548:407:57
7:57
+0:03
40K
24.85 mi13:40:573:34:538:396:59
8:10
+0:13
25.2M
25.20 mi13:43:553:37:518:392:58
8:36
+0:26
Finish
26.22 mi13:51:573:45:538:378:02
7:53
-0:43

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

7:53 /mi

Average Pace

8:37 /mi

Slowest Pace

9:19 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

1:53:41

50% of race

Time at Steady Pace

1:23:16

37% of race

Time at Slower Pace

28:56

13% of race

Average Pace: 8:37 /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 mi10:32:3526:318:3226:31
8:32
#17780
10K
6.21 mi11:01:0755:038:5228:32
9:11
#19976
15K
9.32 mi11:28:191:22:158:4927:12
8:45
#19726
20K
12.43 mi11:55:511:49:478:5027:32
8:52
#19505
Half
13.11 mi12:01:151:55:118:475:24
7:55
#19246
25K
15.53 mi12:21:312:15:278:4320:16
8:22
#18684
30K
18.64 mi12:50:272:44:238:4928:56
9:19
#18689
20M
20.00 mi13:01:382:55:348:4711:11
8:14
#18196
21M
21.00 mi13:10:083:04:048:468:30
8:30
#17763
35K
21.75 mi13:16:083:10:048:446:00
8:01
#17576
23M
23.00 mi13:26:013:19:578:429:53
7:54
#17120
24M
24.00 mi13:33:583:27:548:407:57
7:57
#16887
40K
24.85 mi13:40:573:34:538:396:59
8:10
#16685
25.2M
25.20 mi13:43:553:37:518:392:58
8:36
#16567
Finish
26.22 mi13:51:573:45:538:378:02
7:53
#16339
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi17780113471134719249(Top 72%)11983(Top 79%)11983(Top 227%)
10K6.21 mi3.10 mi19976-219612201-85412201-85421568(Top 81%)12961(Top 85%)12961(Top 245%)
15K9.32 mi3.11 mi19726+25012127+7412127+7419249(Top 72%)11983(Top 79%)11983(Top 227%)
20K12.43 mi3.11 mi19505+22112053+7412053+7418997(Top 71%)11888(Top 78%)11888(Top 225%)
Half13.11 mi0.68 mi19246+25911962+9111962+9113674(Top 51%)9784(Top 64%)9784(Top 185%)
25K15.53 mi2.42 mi18684+56211721+24111721+24115312(Top 58%)10268(Top 68%)10268(Top 194%)
30K18.64 mi3.11 mi18689-511700+2111700+2118677(Top 70%)11636(Top 77%)11636(Top 220%)
20M20.00 mi1.36 mi18196+49311479+22111479+22111882(Top 45%)8667(Top 57%)8667(Top 164%)
21M21.00 mi1.00 mi17763+43311295+18411295+18410495(Top 39%)7864(Top 52%)7864(Top 149%)
35K21.75 mi0.75 mi17576+18711201+9411201+9412270(Top 46%)8688(Top 57%)8688(Top 164%)
23M23.00 mi1.25 mi17120+45611012+18911012+1899034(Top 34%)6988(Top 46%)6988(Top 132%)
24M24.00 mi1.00 mi16887+23310893+11910893+11910880(Top 41%)7853(Top 52%)7853(Top 149%)
40K24.85 mi0.85 mi16685+20210793+10010793+10011136(Top 42%)7912(Top 52%)7912(Top 150%)
25.2M25.20 mi0.35 mi16567+11810735+5810735+5810170(Top 38%)7404(Top 49%)7404(Top 140%)
Finish26.22 mi1.02 mi16339+22810635+10010635+10011287(Top 42%)7944(Top 52%)7944(Top 150%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21stories
+97ft-345ft

Overall

19249

Males

11983

M18-39

11983

5K→10K

3.1 - 6.2 mi

Top 81%
×5stories
+79ft-138ft

Overall

21568

Males

12961

M18-39

12961

10K→15K

6.2 - 9.3 mi

Top 72%
×3stories
+67ft-78ft

Overall

19249

Males

11983

M18-39

11983

15K→20K

9.3 - 12.4 mi

Top 71%
×5stories
+106ft-86ft

Overall

18997

Males

11888

M18-39

11888

20K→Half

12.4 - 13.1 mi

Top 51%
×2stories
+19ft-37ft

Overall

13674

Males

9784

M18-39

9784

Half→25K

13.1 - 15.5 mi

Top 58%
×4stories
+66ft-88ft

Overall

15312

Males

10268

M18-39

10268

25K→30K

15.5 - 18.6 mi

Top 70%
×9stories
+181ft-148ft

Overall

18677

Males

11636

M18-39

11636

30K→20M

18.6 - 20.0 mi

Top 45%
×5stories
+64ft-50ft

Overall

11882

Males

8667

M18-39

8667

20M→21M

20.0 - 21.0 mi

Top 39%
×8stories
+106ft-24ft

Overall

10495

Males

7864

M18-39

7864

21M→35K

21.0 - 21.8 mi

Top 46%
×7stories
+17ft-86ft

Overall

12270

Males

8688

M18-39

8688

35K→23M

21.8 - 23.0 mi

Top 34%
×5stories
+23ft-63ft

Overall

9034

Males

6988

M18-39

6988

23M→24M

23.0 - 24.0 mi

Top 41%
×6stories
+12ft-82ft

Overall

10880

Males

7853

M18-39

7853

24M→40K

24.0 - 24.9 mi

Top 42%
×1story
+6ft-20ft

Overall

11136

Males

7912

M18-39

7912

40K→25.2M

24.9 - 25.2 mi

Top 38%
×1story
+13ft-16ft

Overall

10170

Males

7404

M18-39

7404

25.2M→Finish

25.2 - 26.2 mi

Top 42%
×2stories
+22ft-21ft

Overall

11287

Males

7944

M18-39

7944

Passing Analysis

Category:
Athletes Passed
3980
Passed By
2539
Net Change
+1441
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17780
5K → 10K162212-2196#17780#19976
10K → 15K33989+250#19976#19726
15K → 20K28261+221#19726#19505
20K → Half2590+259#19505#19246
Half → 25K5631+562#19246#18684
25K → 30K166171-5#18684#18689
30K → 20M4930+493#18689#18196
20M → 21M4330+433#18196#17763
21M → 35K1892+187#17763#17576
35K → 23M4560+456#17576#17120
23M → 24M2341+233#17120#16887
24M → 40K2020+202#16887#16685
40K → 25.2M1191+118#16685#16567
25.2M → Finish2291+228#16567#16339
TOTALS39802539+1441
📊

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