Boston Marathon logo
BOSTON MARATHON 2023

Kenneth Frommer

Bib: 24884•M

MA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M45-49)
#0 / 2252
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
9:57/mi
30:54
↑ 97↓ 3451.5%
10K· 6.21 mi
10:02/mi
1:02:04
↑ 79↓ 1380.4%
15K· 9.32 mi
11:03/mi
1:36:23
↑ 67↓ 78
20K· 12.43 mi
13:06/mi
2:17:04
↑ 106↓ 860.1%
Half· 13.11 mi
12:04/mi
2:25:18
↑ 19↓ 370.5%
25K· 15.53 mi
16:08/mi
3:04:25
↑ 66↓ 880.2%
30K· 18.64 mi
15:20/mi
3:52:04
↑ 181↓ 1480.2%
20M
15:26/mi
4:13:02
↑ 64↓ 500.2%
21M
15:21/mi
4:28:23
↑ 106↓ 241.6%
35K· 21.75 mi
14:07/mi
4:38:57
↑ 17↓ 861.7%
23M
15:29/mi
4:58:20
↑ 23↓ 630.6%
24M
16:35/mi
5:14:55
↓ 821.3%
40K· 24.85 mi
15:22/mi
5:28:03
↓ 200.3%
25.2M
15:22/mi
5:33:21
↑ 13↓ 160.2%
Finish· 26.22 mi
13:16/mi
5:46:52
↑ 22↓ 21

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
Time2:25:18
Pace11:05 /mi
2nd Half
Distance13.11 mi
Time3:21:34
Pace15:23 /mi
📊Positive Split: 38.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:46:1330:549:5730:54
9:57
-
10K
6.21 mi12:17:231:02:049:5931:10
10:02
+0:05
15K
9.32 mi12:51:421:36:2310:2034:19
11:03
+1:01
20K
12.43 mi13:32:232:17:0411:0240:41
13:06
+2:03
Half
13.11 mi13:40:372:25:1811:058:14
12:04
-1:02
25K
15.53 mi14:19:443:04:2511:5239:07
16:08
+4:04
30K
18.64 mi15:07:233:52:0412:2747:39
15:20
-0:48
20M
20.00 mi15:28:214:13:0212:3920:58
15:26
+0:06
21M
21.00 mi15:43:424:28:2312:4715:21
15:21
-0:05
35K
21.75 mi15:54:164:38:5712:5010:34
14:07
-1:14
23M
23.00 mi16:13:394:58:2012:5819:23
15:29
+1:22
24M
24.00 mi16:30:145:14:5513:0716:35
16:35
+1:06
40K
24.85 mi16:43:225:28:0313:1213:08
15:22
-1:13
25.2M
25.20 mi16:48:405:33:2113:145:18
15:22
0:00
Finish
26.22 mi17:02:115:46:5213:1413:31
13:16
-2:06

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

9:57 /mi

Average Pace

13:14 /mi

Slowest Pace

16:35 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:49:23

49% of race

Time at Steady Pace

2:40:54

46% of race

Time at Slower Pace

16:35

5% of race

Average Pace: 13:14 /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 mi11:46:1330:549:5730:54
9:57
#23320
10K
6.21 mi12:17:231:02:049:5931:10
10:02
#23600
15K
9.32 mi12:51:421:36:2310:2034:19
11:03
#24312
20K
12.43 mi13:32:232:17:0411:0240:41
13:06
#25274
Half
13.11 mi13:40:372:25:1811:058:14
12:04
#25332
25K
15.53 mi14:19:443:04:2511:5239:07
16:08
#25912
30K
18.64 mi15:07:233:52:0412:2747:39
15:20
#26109
20M
20.00 mi15:28:214:13:0212:3920:58
15:26
#26151
21M
21.00 mi15:43:424:28:2312:4715:21
15:21
#26149
35K
21.75 mi15:54:164:38:5712:5010:34
14:07
#26157
23M
23.00 mi16:13:394:58:2012:5819:23
15:29
#26194
24M
24.00 mi16:30:145:14:5513:0716:35
16:35
#26263
40K
24.85 mi16:43:225:28:0313:1213:08
15:22
#26286
25.2M
25.20 mi16:48:405:33:2113:145:18
15:22
#26282
Finish
26.22 mi17:02:115:46:5213:1413:31
13:16
#26282
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM45-49Seg. OverallSeg. MalesSeg. M45-49
5K3.11 mi3.11 mi23320137411374125253(Top 95%)14630(Top 96%)14630(Top 650%)
10K6.21 mi3.10 mi23600-28013903-16213903-16223754(Top 89%)13973(Top 92%)13973(Top 620%)
15K9.32 mi3.11 mi24312-71214228-32514228-32525253(Top 95%)14630(Top 96%)14630(Top 650%)
20K12.43 mi3.11 mi25274-96214641-41314641-41326270(Top 99%)15033(Top 99%)15033(Top 668%)
Half13.11 mi0.68 mi25332-5814663-2214663-2225926(Top 97%)14885(Top 98%)14885(Top 661%)
25K15.53 mi2.42 mi25912-58014896-23314896-23326606(Top 100%)15169(Top 100%)15169(Top 674%)
30K18.64 mi3.11 mi26109-19714963-6714963-6726504(Top 100%)15119(Top 100%)15119(Top 671%)
20M20.00 mi1.36 mi26151-4214979-1614979-1626407(Top 99%)15060(Top 99%)15060(Top 669%)
21M21.00 mi1.00 mi26149+214978+114978+125925(Top 97%)14836(Top 98%)14836(Top 659%)
35K21.75 mi0.75 mi26157-814973+514973+526174(Top 98%)14938(Top 98%)14938(Top 663%)
23M23.00 mi1.25 mi26194-3714989-1614989-1626406(Top 99%)15052(Top 99%)15052(Top 668%)
24M24.00 mi1.00 mi26263-6915016-2715016-2726557(Top 100%)15136(Top 100%)15136(Top 672%)
40K24.85 mi0.85 mi26286-2315028-1215028-1226271(Top 99%)14953(Top 99%)14953(Top 664%)
25.2M25.20 mi0.35 mi26282+415026+215026+225873(Top 97%)14743(Top 97%)14743(Top 655%)
Finish26.22 mi1.02 mi2628215022+415022+426101(Top 98%)14864(Top 98%)14864(Top 660%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 95%
×21story building
+97ft-345ft

Overall

25253

Males

14630

M45-49

14630

5K→10K

3.1 - 6.2 mi

Top 89%
×5story building
+79ft-138ft

Overall

23754

Males

13973

M45-49

13973

10K→15K

6.2 - 9.3 mi

Top 95%
×3story building
+67ft-78ft

Overall

25253

Males

14630

M45-49

14630

15K→20K

9.3 - 12.4 mi

Top 99%
×5story building
+106ft-86ft

Overall

26270

Males

15033

M45-49

15033

20K→Half

12.4 - 13.1 mi

Top 97%
×2story building
+19ft-37ft

Overall

25926

Males

14885

M45-49

14885

Half→25K

13.1 - 15.5 mi

Top 100%
×4story building
+66ft-88ft

Overall

26606

Males

15169

M45-49

15169

25K→30K

15.5 - 18.6 mi

Top 100%
×9story building
+181ft-148ft

Overall

26504

Males

15119

M45-49

15119

30K→20M

18.6 - 20.0 mi

Top 99%
×5story building
+64ft-50ft

Overall

26407

Males

15060

M45-49

15060

20M→21M

20.0 - 21.0 mi

Top 97%
×8story building
+106ft-24ft

Overall

25925

Males

14836

M45-49

14836

21M→35K

21.0 - 21.8 mi

Top 98%
×7story building
+17ft-86ft

Overall

26174

Males

14938

M45-49

14938

35K→23M

21.8 - 23.0 mi

Top 99%
×5story building
+23ft-63ft

Overall

26406

Males

15052

M45-49

15052

23M→24M

23.0 - 24.0 mi

Top 100%
×6story building
+12ft-82ft

Overall

26557

Males

15136

M45-49

15136

24M→40K

24.0 - 24.9 mi

Top 99%
×1story
+6ft-20ft

Overall

26271

Males

14953

M45-49

14953

40K→25.2M

24.9 - 25.2 mi

Top 97%
×1story
+13ft-16ft

Overall

25873

Males

14743

M45-49

14743

25.2M→Finish

25.2 - 26.2 mi

Top 98%
×2story building
+22ft-21ft

Overall

26101

Males

14864

M45-49

14864

Passing Analysis

Category:
Athletes Passed
174
Passed By
3136
Net Change
-2962
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#23320
5K → 10K98378-280#23320#23600
10K → 15K8720-712#23600#24312
15K → 20K4966-962#24312#25274
20K → Half563-58#25274#25332
Half → 25K2582-580#25332#25912
25K → 30K5202-197#25912#26109
30K → 20M850-42#26109#26151
20M → 21M119+2#26151#26149
21M → 35K917-8#26149#26157
35K → 23M441-37#26157#26194
23M → 24M069-69#26194#26263
24M → 40K326-23#26263#26286
40K → 25.2M51+4#26286#26282
25.2M → Finish12120#26282#26282
TOTALS1743136-2962
📊

Passing Visuals

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
Share Feedback

Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing