Boston Marathon logo
BOSTON MARATHON 2023

Tom Guerin

HI

Bib: 22859 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 (M65-69)
#0 / 549
Top 36%
Race Day Weather
49°/39°F
light intensity drizzle

Race Timeline

Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
469 ft elev
5K· 3.11 mi
8:43/mi
27:04
↑ 97↓ 3451.5%
220 ft elev
10K· 6.21 mi
8:33/mi
53:39
↑ 79↓ 1380.4%
157 ft elev
15K· 9.32 mi
8:44/mi
1:20:47
↑ 67↓ 78
146 ft elev
20K· 12.43 mi
9:05/mi
1:49:01
↑ 106↓ 860.1%
165 ft elev
Half· 13.11 mi
8:39/mi
1:54:55
↑ 19↓ 370.5%
148 ft elev
25K· 15.53 mi
8:51/mi
2:16:22
↑ 66↓ 880.2%
127 ft elev
30K· 18.64 mi
9:25/mi
2:45:36
↑ 181↓ 1480.2%
138 ft elev
20M
10:09/mi
2:59:23
↑ 64↓ 500.2%
148 ft elev
21M
9:48/mi
3:09:11
↑ 106↓ 241.6%
227 ft elev
35K· 21.75 mi
9:04/mi
3:15:58
↑ 17↓ 861.7%
156 ft elev
23M
8:54/mi
3:27:07
↑ 23↓ 630.6%
116 ft elev
24M
8:50/mi
3:35:57
↓ 821.3%
34 ft elev
40K· 24.85 mi
8:51/mi
3:43:31
↓ 200.3%
20 ft elev
25.2M
9:23/mi
3:46:45
↑ 13↓ 160.2%
18 ft elev
Finish· 26.22 mi
8:20/mi
3:55:15
↑ 22↓ 21
17 ft elev
Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent

The Course

Half Splits

1st Half· via Half
1:54:558:46 /mi⚡ faster
2nd Half
2:00:209:11 /mi+4.7%
Positive split — 4.7% slower in the second half
Is this your race?

Your race, unpacked

See your splits, ranks & AI insights.

Checkpoint Splits

CheckpointTimeAvg PaceSegment LengthSegment TimeSegment PaceTrendDiff
5K
27:048:433.11 mi27:04
8:43
-
10K
53:398:383.10 mi26:35
8:33
-0:10
15K
1:20:478:403.11 mi27:08
8:44
+0:11
20K
1:49:018:463.11 mi28:14
9:05
+0:21
Half(13.11 mi)
1:54:558:460.68 mi5:54
8:39
-0:26
25K
2:16:228:472.42 mi21:27
8:51
+0:12
30K
2:45:368:533.11 mi29:14
9:25
+0:34
20M
2:59:238:581.36 mi13:47
10:09
+0:44
21M
3:09:119:011.00 mi9:48
9:48
-0:21
35K
3:15:589:010.75 mi6:47
9:04
-0:44
23M
3:27:079:001.25 mi11:09
8:54
-0:10
24M
3:35:579:001.00 mi8:50
8:50
-0:04
40K
3:43:319:000.85 mi7:34
8:51
+0:01
25.2M
3:46:459:000.35 mi3:14
9:23
+0:32
Finish(26.22 mi)
3:55:158:591.02 mi8:30
8:20
-1:03
Trend:
Faster pace
Steady pace
Slower pace

Checkpoints & Pacing

Pace Line

Fastest Pace

8:20 /mi

Average Pace

8:59 /mi

Slowest Pace

10:09 /mi

Loading chart...
Fastest
Middle
Slowest
Average

Segments

Time at Faster Pace

35:05

15% of race

Time at Steady Pace

2:24:07

61% of race

Time at Slower Pace

56:03

24% of race

Average Pace: 8:58 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

Heatmap

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Checkpoint and Segment Rankings

CheckpointSeg. DistOverallMalesM65-69Seg. OverallSeg. MalesSeg. M65-69
5K3.11 mi189521175911759191461193611936
10K3.10 mi18707+24511735+2411735+24185901174211742
15K3.11 mi18849-14211791-5611791-56191461193611936
20K3.11 mi19186-33711939-14811939-148200681233612336
Half(13.11 mi)0.68 mi19144+4211919+2011919+20185731173411734
25K2.42 mi18988+15611850+6911850+69182011151311513
30K3.11 mi19021-331185011850190681181211812
20M1.36 mi19219-19811919-6911919-69208461249212492
21M1.00 mi19093+12611850+6911850+69172481089610896
35K0.75 mi19062+3111831+1911831+19181501121311213
23M1.25 mi18861+20111729+10211729+102155571005910059
24M1.00 mi18738+12311666+6311666+63163851035410354
40K0.85 mi18621+11711611+5511611+551534698449844
25.2M0.35 mi18550+7111574+3711574+371455095069506
Finish(26.22 mi)1.02 mi18417+13311506+6811506+681434394159415

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 72%
×21story building
+97ft-345ft

Overall

19146

Males

11936

M65-69

11936

5K→10K

3.1 - 6.2 mi

Top 70%
×5story building
+79ft-138ft

Overall

18590

Males

11742

M65-69

11742

10K→15K

6.2 - 9.3 mi

Top 72%
×3story building
+67ft-78ft

Overall

19146

Males

11936

M65-69

11936

15K→20K

9.3 - 12.4 mi

Top 75%
×5story building
+106ft-86ft

Overall

20068

Males

12336

M65-69

12336

20K→Half

12.4 - 13.1 mi

Top 70%
×2story building
+19ft-37ft

Overall

18573

Males

11734

M65-69

11734

Half→25K

13.1 - 15.5 mi

Top 68%
×4story building
+66ft-88ft

Overall

18201

Males

11513

M65-69

11513

25K→30K

15.5 - 18.6 mi

Top 72%
×9story building
+181ft-148ft

Overall

19068

Males

11812

M65-69

11812

30K→20M

18.6 - 20.0 mi

Top 78%
×5story building
+64ft-50ft

Overall

20846

Males

12492

M65-69

12492

20M→21M

20.0 - 21.0 mi

Top 65%
×8story building
+106ft-24ft

Overall

17248

Males

10896

M65-69

10896

21M→35K

21.0 - 21.8 mi

Top 68%
×7story building
+17ft-86ft

Overall

18150

Males

11213

M65-69

11213

35K→23M

21.8 - 23.0 mi

Top 58%
×5story building
+23ft-63ft

Overall

15557

Males

10059

M65-69

10059

23M→24M

23.0 - 24.0 mi

Top 62%
×6story building
+12ft-82ft

Overall

16385

Males

10354

M65-69

10354

24M→40K

24.0 - 24.9 mi

Top 58%
×1story
+6ft-20ft

Overall

15346

Males

9844

M65-69

9844

40K→25.2M

24.9 - 25.2 mi

Top 55%
×1story
+13ft-16ft

Overall

14550

Males

9506

M65-69

9506

25.2M→Finish

25.2 - 26.2 mi

Top 54%
×2story building
+22ft-21ft

Overall

14343

Males

9415

M65-69

9415

Passing Analysis

Category:
▲Net Change
+0
0 passed by0 passed
SegmentMovementRank
Start → 5K-#18952
5K → 10K
253498+245
#18952 → #18707
10K → 15K
271129-142
#18707 → #18849
15K → 20K
41275-337
#18849 → #19186
20K → Half
850+42
#19186 → #19144
Half → 25K
35191+156
#19144 → #18988
25K → 30K
189156-33
#18988 → #19021
30K → 20M
23436-198
#19021 → #19219
20M → 21M
27153+126
#19219 → #19093
21M → 35K
2354+31
#19093 → #19062
35K → 23M
6207+201
#19062 → #18861
23M → 24M
12135+123
#18861 → #18738
24M → 40K
4121+117
#18738 → #18621
40K → 25.2M
475+71
#18621 → #18550
25.2M → Finish
7140+133
#18550 → #18417
TOTALS
14852020+535
#18952 → #18417

Passing Visualized

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