Boston Marathon logo
BOSTON MARATHON 2023

Ian Fraser

Bib: 3280•M

ME

0:00
0:00
/ mi
Be the first to cheer!
Overall
#0 / 26622
Top 16%
Gender (Male)
#0 / 15176
Top 27%
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
21:25
Rank: #5498
Start → 5K
21:25 | 6:54/mi
10K· 6.21 mi
42:32
Rank: #5358 (+140)
5K → 10K
21:07 | 6:48/mi
15K· 9.32 mi
1:03:48
Rank: #5416 (-58)
10K → 15K
21:16 | 6:51/mi
20K· 12.43 mi
1:24:49
Rank: #5074 (+342)
15K → 20K
21:01 | 6:46/mi
Half· 13.11 mi
1:29:33
Rank: #5163 (-89)
20K → Half
4:44 | 6:56/mi
25K· 15.53 mi
1:45:56
Rank: #4882 (+281)
Half → 25K
16:23 | 6:45/mi
30K· 18.64 mi
2:07:09
Rank: #4491 (+391)
25K → 30K
21:13 | 6:50/mi
20M
2:16:23
Rank: #4311 (+180)
30K → 20M
9:14 | 6:48/mi
21M
2:23:47
Rank: #4275 (+36)
20M → 21M
7:24 | 7:24/mi
35K· 21.75 mi
2:28:46
Rank: #4221 (+54)
21M → 35K
4:59 | 6:40/mi
23M
2:37:24
Rank: #4144 (+77)
35K → 23M
8:38 | 6:54/mi
24M
2:44:13
Rank: #4109 (+35)
23M → 24M
6:49 | 6:49/mi
40K· 24.85 mi
2:50:26
Rank: #4174 (-65)
24M → 40K
6:13 | 7:16/mi
25.2M
2:53:11
Rank: #4214 (-40)
40K → 25.2M
2:45 | 7:58/mi
Finish· 26.22 mi
3:00:32
Rank: #4318 (-104)
25.2M → Finish
7:21 | 7:13/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 HalfFaster
Distance13.11 mi
Time1:29:33
Pace6:50 /mi
2nd Half
Distance13.11 mi
Time1:30:59
Pace6:56 /mi
📊Positive Split: 1.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:23:0321:256:5421:25
6:54
-
10K
6.21 mi10:44:1042:326:5121:07
6:48
-0:06
15K
9.32 mi11:05:261:03:486:5121:16
6:51
+0:03
20K
12.43 mi11:26:271:24:496:4921:01
6:46
-0:05
Half
13.11 mi11:31:111:29:336:504:44
6:56
+0:10
25K
15.53 mi11:47:341:45:566:4916:23
6:45
-0:11
30K
18.64 mi12:08:472:07:096:4921:13
6:50
+0:05
20M
20.00 mi12:18:012:16:236:499:14
6:48
-0:02
21M
21.00 mi12:25:252:23:476:517:24
7:24
+0:36
35K
21.75 mi12:30:242:28:466:504:59
6:40
-0:44
23M
23.00 mi12:39:022:37:246:518:38
6:54
+0:14
24M
24.00 mi12:45:512:44:136:516:49
6:49
-0:05
40K
24.85 mi12:52:042:50:266:516:13
7:16
+0:27
25.2M
25.20 mi12:54:492:53:116:522:45
7:58
+0:42
Finish
26.22 mi13:02:103:00:326:537:21
7:13
-0:45

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

6:40 /mi

Average Pace

6:53 /mi

Slowest Pace

7:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:50:23

94% of race

Time at Steady Pace

7:24

4% of race

Time at Slower Pace

2:45

2% of race

Average Pace: 6:53 /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 mi10:23:0321:256:5421:25
6:54
#5498
10K
6.21 mi10:44:1042:326:5121:07
6:48
#5358
15K
9.32 mi11:05:261:03:486:5121:16
6:51
#5416
20K
12.43 mi11:26:271:24:496:4921:01
6:46
#5074
Half
13.11 mi11:31:111:29:336:504:44
6:56
#5163
25K
15.53 mi11:47:341:45:566:4916:23
6:45
#4882
30K
18.64 mi12:08:472:07:096:4921:13
6:50
#4491
20M
20.00 mi12:18:012:16:236:499:14
6:48
#4311
21M
21.00 mi12:25:252:23:476:517:24
7:24
#4275
35K
21.75 mi12:30:242:28:466:504:59
6:40
#4221
23M
23.00 mi12:39:022:37:246:518:38
6:54
#4144
24M
24.00 mi12:45:512:44:136:516:49
6:49
#4109
40K
24.85 mi12:52:042:50:266:516:13
7:16
#4174
25.2M
25.20 mi12:54:492:53:116:522:45
7:58
#4214
Finish
26.22 mi13:02:103:00:326:537:21
7:13
#4318
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi5498507150715508(Top 21%)5071(Top 33%)5071(Top 96%)
10K6.21 mi3.10 mi5358+1404948+1234948+1235264(Top 20%)4866(Top 32%)4866(Top 92%)
15K9.32 mi3.11 mi5416-585003-555003-555508(Top 21%)5071(Top 33%)5071(Top 96%)
20K12.43 mi3.11 mi5074+3424711+2924711+2924133(Top 16%)3877(Top 26%)3877(Top 73%)
Half13.11 mi0.68 mi5163-894790-794790-796141(Top 23%)5584(Top 37%)5584(Top 106%)
25K15.53 mi2.42 mi4882+2814538+2524538+2523805(Top 14%)3579(Top 24%)3579(Top 68%)
30K18.64 mi3.11 mi4491+3914197+3414197+3413194(Top 12%)3010(Top 20%)3010(Top 57%)
20M20.00 mi1.36 mi4311+1804033+1644033+1642805(Top 11%)2652(Top 17%)2652(Top 50%)
21M21.00 mi1.00 mi4275+363997+363997+364121(Top 15%)3790(Top 25%)3790(Top 72%)
35K21.75 mi0.75 mi4221+543950+473950+473367(Top 13%)3137(Top 21%)3137(Top 59%)
23M23.00 mi1.25 mi4144+773881+693881+693215(Top 12%)2992(Top 20%)2992(Top 57%)
24M24.00 mi1.00 mi4109+353847+343847+343751(Top 14%)3437(Top 23%)3437(Top 65%)
40K24.85 mi0.85 mi4174-653905-583905-585227(Top 20%)4488(Top 30%)4488(Top 85%)
25.2M25.20 mi0.35 mi4214-403943-383943-386240(Top 23%)5076(Top 33%)5076(Top 96%)
Finish26.22 mi1.02 mi4318-1044028-854028-856481(Top 24%)5232(Top 34%)5232(Top 99%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 21%
×21stories
+97ft-345ft

Overall

5508

Males

5071

M18-39

5071

5K→10K

3.1 - 6.2 mi

Top 20%
×5stories
+79ft-138ft

Overall

5264

Males

4866

M18-39

4866

10K→15K

6.2 - 9.3 mi

Top 21%
×3stories
+67ft-78ft

Overall

5508

Males

5071

M18-39

5071

15K→20K

9.3 - 12.4 mi

Top 16%
×5stories
+106ft-86ft

Overall

4133

Males

3877

M18-39

3877

20K→Half

12.4 - 13.1 mi

Top 23%
×2stories
+19ft-37ft

Overall

6141

Males

5584

M18-39

5584

Half→25K

13.1 - 15.5 mi

Top 14%
×4stories
+66ft-88ft

Overall

3805

Males

3579

M18-39

3579

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3194

Males

3010

M18-39

3010

30K→20M

18.6 - 20.0 mi

Top 11%
×5stories
+64ft-50ft

Overall

2805

Males

2652

M18-39

2652

20M→21M

20.0 - 21.0 mi

Top 15%
×8stories
+106ft-24ft

Overall

4121

Males

3790

M18-39

3790

21M→35K

21.0 - 21.8 mi

Top 13%
×7stories
+17ft-86ft

Overall

3367

Males

3137

M18-39

3137

35K→23M

21.8 - 23.0 mi

Top 12%
×5stories
+23ft-63ft

Overall

3215

Males

2992

M18-39

2992

23M→24M

23.0 - 24.0 mi

Top 14%
×6stories
+12ft-82ft

Overall

3751

Males

3437

M18-39

3437

24M→40K

24.0 - 24.9 mi

Top 20%
×1story
+6ft-20ft

Overall

5227

Males

4488

M18-39

4488

40K→25.2M

24.9 - 25.2 mi

Top 23%
×1story
+13ft-16ft

Overall

6240

Males

5076

M18-39

5076

25.2M→Finish

25.2 - 26.2 mi

Top 24%
×2stories
+22ft-21ft

Overall

6481

Males

5232

M18-39

5232

Passing Analysis

Category:
Athletes Passed
1987
Passed By
807
Net Change
+1180
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5498
5K → 10K277137+140#5498#5358
10K → 15K95153-58#5358#5416
15K → 20K3497+342#5416#5074
20K → Half493-89#5074#5163
Half → 25K2898+281#5163#4882
25K → 30K40514+391#4882#4491
30K → 20M1855+180#4491#4311
20M → 21M8549+36#4311#4275
21M → 35K6410+54#4275#4221
35K → 23M10124+77#4221#4144
23M → 24M7136+35#4144#4109
24M → 40K3398-65#4109#4174
40K → 25.2M848-40#4174#4214
25.2M → Finish21125-104#4214#4318
TOTALS1987807+1180
📊

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