Boston Marathon logo
BOSTON MARATHON 2023

Alastair Baillie

Bib: 20074•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M60-64)
#0 / 1110
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
29:20
Rank: #21917
Start → 5K
29:20 | 9:26/mi
10K· 6.21 mi
58:31
Rank: #22100 (-183)
5K → 10K
29:11 | 9:24/mi
15K· 9.32 mi
1:27:40
Rank: #22002 (+98)
10K → 15K
29:09 | 9:23/mi
20K· 12.43 mi
1:59:51
Rank: #22533 (-531)
15K → 20K
32:11 | 10:22/mi
Half· 13.11 mi
2:06:58
Rank: #22643 (-110)
20K → Half
7:07 | 10:26/mi
25K· 15.53 mi
2:37:55
Rank: #23538 (-895)
Half → 25K
30:57 | 12:46/mi
30K· 18.64 mi
3:18:47
Rank: #24093 (-555)
25K → 30K
40:52 | 13:09/mi
20M
3:34:20
Rank: #24055 (+38)
30K → 20M
15:33 | 11:27/mi
21M
3:46:32
Rank: #24026 (+29)
20M → 21M
12:12 | 12:12/mi
35K· 21.75 mi
3:54:44
Rank: #24000 (+26)
21M → 35K
8:12 | 10:58/mi
23M
4:09:39
Rank: #23998 (+2)
35K → 23M
14:55 | 11:55/mi
24M
4:21:31
Rank: #24016 (-18)
23M → 24M
11:52 | 11:52/mi
40K· 24.85 mi
4:32:08
Rank: #24035 (-19)
24M → 40K
10:37 | 12:25/mi
25.2M
4:36:57
Rank: #24055 (-20)
40K → 25.2M
4:49 | 13:58/mi
Finish· 26.22 mi
4:50:17
Rank: #24196 (-141)
25.2M → Finish
13:20 | 13:05/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
Time2:06:58
Pace9:41 /mi
2nd Half
Distance13.11 mi
Time2:43:19
Pace12:27 /mi
📊Positive Split: 28.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:26:1529:209:2629:20
9:26
-
10K
6.21 mi11:55:2658:319:2529:11
9:24
-0:02
15K
9.32 mi12:24:351:27:409:2429:09
9:23
-0:01
20K
12.43 mi12:56:461:59:519:3932:11
10:22
+0:59
Half
13.11 mi13:03:532:06:589:417:07
10:26
+0:04
25K
15.53 mi13:34:502:37:5510:1030:57
12:46
+2:20
30K
18.64 mi14:15:423:18:4710:4040:52
13:09
+0:23
20M
20.00 mi14:31:153:34:2010:4315:33
11:27
-1:42
21M
21.00 mi14:43:273:46:3210:4712:12
12:12
+0:45
35K
21.75 mi14:51:393:54:4410:488:12
10:58
-1:14
23M
23.00 mi15:06:344:09:3910:5114:55
11:55
+0:57
24M
24.00 mi15:18:264:21:3110:5411:52
11:52
-0:03
40K
24.85 mi15:29:034:32:0810:5710:37
12:25
+0:33
25.2M
25.20 mi15:33:524:36:5710:594:49
13:58
+1:33
Finish
26.22 mi15:47:124:50:1711:0513:20
13:05
-0:53

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

9:23 /mi

Average Pace

11:05 /mi

Slowest Pace

13:58 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:15:10

47% of race

Time at Steady Pace

1:05:09

22% of race

Time at Slower Pace

1:29:58

31% of race

Average Pace: 11:04 /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 mi11:26:1529:209:2629:20
9:26
#21917
10K
6.21 mi11:55:2658:319:2529:11
9:24
#22100
15K
9.32 mi12:24:351:27:409:2429:09
9:23
#22002
20K
12.43 mi12:56:461:59:519:3932:11
10:22
#22533
Half
13.11 mi13:03:532:06:589:417:07
10:26
#22643
25K
15.53 mi13:34:502:37:5510:1030:57
12:46
#23538
30K
18.64 mi14:15:423:18:4710:4040:52
13:09
#24093
20M
20.00 mi14:31:153:34:2010:4315:33
11:27
#24055
21M
21.00 mi14:43:273:46:3210:4712:12
12:12
#24026
35K
21.75 mi14:51:393:54:4410:488:12
10:58
#24000
23M
23.00 mi15:06:344:09:3910:5114:55
11:55
#23998
24M
24.00 mi15:18:264:21:3110:5411:52
11:52
#24016
40K
24.85 mi15:29:034:32:0810:5710:37
12:25
#24035
25.2M
25.20 mi15:33:524:36:5710:594:49
13:58
#24055
Finish
26.22 mi15:47:124:50:1711:0513:20
13:05
#24196
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM60-64Seg. OverallSeg. MalesSeg. M60-64
5K3.11 mi3.11 mi21917130561305621909(Top 82%)13151(Top 87%)13151(Top 1185%)
10K6.21 mi3.10 mi22100-18313175-11913175-11922198(Top 83%)13255(Top 87%)13255(Top 1194%)
15K9.32 mi3.11 mi22002+9813142+3313142+3321909(Top 82%)13151(Top 87%)13151(Top 1185%)
20K12.43 mi3.11 mi22533-53113402-26013402-26023583(Top 89%)13882(Top 91%)13882(Top 1251%)
Half13.11 mi0.68 mi22643-11013462-6013462-6024067(Top 90%)14098(Top 93%)14098(Top 1270%)
25K15.53 mi2.42 mi23538-89513872-41013872-41025735(Top 97%)14787(Top 97%)14787(Top 1332%)
30K18.64 mi3.11 mi24093-55514105-23314105-23325542(Top 96%)14656(Top 97%)14656(Top 1320%)
20M20.00 mi1.36 mi24055+3814069+3614069+3623433(Top 88%)13659(Top 90%)13659(Top 1231%)
21M21.00 mi1.00 mi24026+2914048+2114048+2123049(Top 87%)13449(Top 89%)13449(Top 1212%)
35K21.75 mi0.75 mi24000+2614032+1614032+1623232(Top 87%)13498(Top 89%)13498(Top 1216%)
23M23.00 mi1.25 mi23998+214020+1214020+1223871(Top 90%)13798(Top 91%)13798(Top 1243%)
24M24.00 mi1.00 mi24016-18140201402024355(Top 91%)13978(Top 92%)13978(Top 1259%)
40K24.85 mi0.85 mi24035-19140201402024348(Top 91%)13962(Top 92%)13962(Top 1258%)
25.2M25.20 mi0.35 mi24055-2014027-714027-724971(Top 94%)14265(Top 94%)14265(Top 1285%)
Finish26.22 mi1.02 mi24196-14114086-5914086-5926012(Top 98%)14811(Top 98%)14811(Top 1334%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 82%
×21stories
+97ft-345ft

Overall

21909

Males

13151

M60-64

13151

5K→10K

3.1 - 6.2 mi

Top 83%
×5stories
+79ft-138ft

Overall

22198

Males

13255

M60-64

13255

10K→15K

6.2 - 9.3 mi

Top 82%
×3stories
+67ft-78ft

Overall

21909

Males

13151

M60-64

13151

15K→20K

9.3 - 12.4 mi

Top 89%
×5stories
+106ft-86ft

Overall

23583

Males

13882

M60-64

13882

20K→Half

12.4 - 13.1 mi

Top 90%
×2stories
+19ft-37ft

Overall

24067

Males

14098

M60-64

14098

Half→25K

13.1 - 15.5 mi

Top 97%
×4stories
+66ft-88ft

Overall

25735

Males

14787

M60-64

14787

25K→30K

15.5 - 18.6 mi

Top 96%
×9stories
+181ft-148ft

Overall

25542

Males

14656

M60-64

14656

30K→20M

18.6 - 20.0 mi

Top 88%
×5stories
+64ft-50ft

Overall

23433

Males

13659

M60-64

13659

20M→21M

20.0 - 21.0 mi

Top 87%
×8stories
+106ft-24ft

Overall

23049

Males

13449

M60-64

13449

21M→35K

21.0 - 21.8 mi

Top 87%
×7stories
+17ft-86ft

Overall

23232

Males

13498

M60-64

13498

35K→23M

21.8 - 23.0 mi

Top 90%
×5stories
+23ft-63ft

Overall

23871

Males

13798

M60-64

13798

23M→24M

23.0 - 24.0 mi

Top 91%
×6stories
+12ft-82ft

Overall

24355

Males

13978

M60-64

13978

24M→40K

24.0 - 24.9 mi

Top 91%
×1story
+6ft-20ft

Overall

24348

Males

13962

M60-64

13962

40K→25.2M

24.9 - 25.2 mi

Top 94%
×1story
+13ft-16ft

Overall

24971

Males

14265

M60-64

14265

25.2M→Finish

25.2 - 26.2 mi

Top 98%
×2stories
+22ft-21ft

Overall

26012

Males

14811

M60-64

14811

Passing Analysis

Category:
Athletes Passed
704
Passed By
2983
Net Change
-2279
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#21917
5K → 10K166349-183#21917#22100
10K → 15K227129+98#22100#22002
15K → 20K34565-531#22002#22533
20K → Half7117-110#22533#22643
Half → 25K5900-895#22643#23538
25K → 30K15570-555#23538#24093
30K → 20M7436+38#24093#24055
20M → 21M5930+29#24055#24026
21M → 35K348+26#24026#24000
35K → 23M3836+2#24000#23998
23M → 24M1735-18#23998#24016
24M → 40K2140-19#24016#24035
40K → 25.2M424-20#24035#24055
25.2M → Finish3144-141#24055#24196
TOTALS7042983-2279
📊

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