Boston Marathon logo
BOSTON MARATHON 2023

Rosario Fondacaro

Bib: 12681•M

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 26622
Top 49%
Gender (Male)
#0 / 15176
Masters (Masters Men)
#0 / 9891
Division (M50-54)
#0 / 2052
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
7:50/mi
24:20
↑ 97↓ 3451.5%
10K· 6.21 mi
7:55/mi
48:56
↑ 79↓ 1380.4%
15K· 9.32 mi
8:02/mi
1:13:52
↑ 67↓ 78
20K· 12.43 mi
8:11/mi
1:39:16
↑ 106↓ 860.1%
Half· 13.11 mi
8:01/mi
1:44:44
↑ 19↓ 370.5%
25K· 15.53 mi
8:24/mi
2:05:06
↑ 66↓ 880.2%
30K· 18.64 mi
8:18/mi
2:30:52
↑ 181↓ 1480.2%
20M
7:58/mi
2:41:42
↑ 64↓ 500.2%
21M
8:28/mi
2:50:10
↑ 106↓ 241.6%
35K· 21.75 mi
7:33/mi
2:55:49
↑ 17↓ 861.7%
23M
7:57/mi
3:05:46
↑ 23↓ 630.6%
24M
7:48/mi
3:13:34
↓ 821.3%
40K· 24.85 mi
8:16/mi
3:20:38
↓ 200.3%
25.2M
10:38/mi
3:24:18
↑ 13↓ 160.2%
Finish· 26.22 mi
8:41/mi
3:33:09
↑ 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
Time1:44:44
Pace7:59 /mi
2nd Half
Distance13.11 mi
Time1:48:25
Pace8:16 /mi
📊Positive Split: 3.5% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:49:4324:207:5024:20
7:50
-
10K
6.21 mi11:14:1948:567:5324:36
7:55
+0:05
15K
9.32 mi11:39:151:13:527:5624:56
8:02
+0:07
20K
12.43 mi12:04:391:39:167:5925:24
8:11
+0:09
Half
13.11 mi12:10:071:44:447:595:28
8:01
-0:10
25K
15.53 mi12:30:292:05:068:0320:22
8:24
+0:23
30K
18.64 mi12:56:152:30:528:0625:46
8:18
-0:06
20M
20.00 mi13:07:052:41:428:0510:50
7:58
-0:20
21M
21.00 mi13:15:332:50:108:068:28
8:28
+0:30
35K
21.75 mi13:21:122:55:498:055:39
7:33
-0:55
23M
23.00 mi13:31:093:05:468:059:57
7:57
+0:24
24M
24.00 mi13:38:573:13:348:047:48
7:48
-0:09
40K
24.85 mi13:46:013:20:388:047:04
8:16
+0:28
25.2M
25.20 mi13:49:413:24:188:063:40
10:38
+2:22
Finish
26.22 mi13:58:323:33:098:088:51
8:41
-1:57

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

7:33 /mi

Average Pace

8:08 /mi

Slowest Pace

10:38 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

5:39

3% of race

Time at Steady Pace

2:46:09

78% of race

Time at Slower Pace

41:21

19% of race

Average Pace: 8:08 /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 mi10:49:4324:207:5024:20
7:50
#12665
10K
6.21 mi11:14:1948:567:5324:36
7:55
#13383
15K
9.32 mi11:39:151:13:527:5624:56
8:02
#13773
20K
12.43 mi12:04:391:39:167:5925:24
8:11
#14003
Half
13.11 mi12:10:071:44:447:595:28
8:01
#14017
25K
15.53 mi12:30:292:05:068:0320:22
8:24
#14290
30K
18.64 mi12:56:152:30:528:0625:46
8:18
#14049
20M
20.00 mi13:07:052:41:428:0510:50
7:58
#13702
21M
21.00 mi13:15:332:50:108:068:28
8:28
#13474
35K
21.75 mi13:21:122:55:498:055:39
7:33
#13285
23M
23.00 mi13:31:093:05:468:059:57
7:57
#13020
24M
24.00 mi13:38:573:13:348:047:48
7:48
#12877
40K
24.85 mi13:46:013:20:388:047:04
8:16
#12830
25.2M
25.20 mi13:49:413:24:188:063:40
10:38
#12965
Finish
26.22 mi13:58:323:33:098:088:51
8:41
#13098
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi126659389938914572(Top 55%)10124(Top 67%)10124(Top 493%)
10K6.21 mi3.10 mi13383-7189691-3029691-30214108(Top 53%)9971(Top 66%)9971(Top 486%)
15K9.32 mi3.11 mi13773-3909830-1399830-13914572(Top 55%)10124(Top 67%)10124(Top 493%)
20K12.43 mi3.11 mi14003-2309893-639893-6314769(Top 55%)10179(Top 67%)10179(Top 496%)
Half13.11 mi0.68 mi14017-149902-99902-914413(Top 54%)10052(Top 66%)10052(Top 490%)
25K15.53 mi2.42 mi14290-2739993-919993-9115568(Top 58%)10363(Top 68%)10363(Top 505%)
30K18.64 mi3.11 mi14049+2419855+1389855+13812975(Top 49%)9217(Top 61%)9217(Top 449%)
20M20.00 mi1.36 mi13702+3479707+1489707+14810070(Top 38%)7803(Top 51%)7803(Top 380%)
21M21.00 mi1.00 mi13474+2289597+1109597+11010276(Top 39%)7754(Top 51%)7754(Top 378%)
35K21.75 mi0.75 mi13285+1899506+919506+918930(Top 34%)7054(Top 46%)7054(Top 344%)
23M23.00 mi1.25 mi13020+2659368+1389368+1389394(Top 35%)7180(Top 47%)7180(Top 350%)
24M24.00 mi1.00 mi12877+1439284+849284+849797(Top 37%)7303(Top 48%)7303(Top 356%)
40K24.85 mi0.85 mi12830+479244+409244+4011783(Top 44%)8224(Top 54%)8224(Top 401%)
25.2M25.20 mi0.35 mi12965-1359285-419285-4119442(Top 73%)11650(Top 77%)11650(Top 568%)
Finish26.22 mi1.02 mi13098-1339325-409325-4016379(Top 62%)10324(Top 68%)10324(Top 503%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 55%
×21story building
+97ft-345ft

Overall

14572

Males

10124

M50-54

10124

5K→10K

3.1 - 6.2 mi

Top 53%
×5story building
+79ft-138ft

Overall

14108

Males

9971

M50-54

9971

10K→15K

6.2 - 9.3 mi

Top 55%
×3story building
+67ft-78ft

Overall

14572

Males

10124

M50-54

10124

15K→20K

9.3 - 12.4 mi

Top 55%
×5story building
+106ft-86ft

Overall

14769

Males

10179

M50-54

10179

20K→Half

12.4 - 13.1 mi

Top 54%
×2story building
+19ft-37ft

Overall

14413

Males

10052

M50-54

10052

Half→25K

13.1 - 15.5 mi

Top 58%
×4story building
+66ft-88ft

Overall

15568

Males

10363

M50-54

10363

25K→30K

15.5 - 18.6 mi

Top 49%
×9story building
+181ft-148ft

Overall

12975

Males

9217

M50-54

9217

30K→20M

18.6 - 20.0 mi

Top 38%
×5story building
+64ft-50ft

Overall

10070

Males

7803

M50-54

7803

20M→21M

20.0 - 21.0 mi

Top 39%
×8story building
+106ft-24ft

Overall

10276

Males

7754

M50-54

7754

21M→35K

21.0 - 21.8 mi

Top 34%
×7story building
+17ft-86ft

Overall

8930

Males

7054

M50-54

7054

35K→23M

21.8 - 23.0 mi

Top 35%
×5story building
+23ft-63ft

Overall

9394

Males

7180

M50-54

7180

23M→24M

23.0 - 24.0 mi

Top 37%
×6story building
+12ft-82ft

Overall

9797

Males

7303

M50-54

7303

24M→40K

24.0 - 24.9 mi

Top 44%
×1story
+6ft-20ft

Overall

11783

Males

8224

M50-54

8224

40K→25.2M

24.9 - 25.2 mi

Top 73%
×1story
+13ft-16ft

Overall

19442

Males

11650

M50-54

11650

25.2M→Finish

25.2 - 26.2 mi

Top 62%
×2story building
+22ft-21ft

Overall

16379

Males

10324

M50-54

10324

Passing Analysis

Category:
Athletes Passed
2008
Passed By
2441
Net Change
-433
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#12665
5K → 10K88806-718#12665#13383
10K → 15K81471-390#13383#13773
15K → 20K118348-230#13773#14003
20K → Half3044-14#14003#14017
Half → 25K70343-273#14017#14290
25K → 30K31170+241#14290#14049
30K → 20M3503+347#14049#13702
20M → 21M2357+228#13702#13474
21M → 35K1912+189#13474#13285
35K → 23M2727+265#13285#13020
23M → 24M1529+143#13020#12877
24M → 40K8336+47#12877#12830
40K → 25.2M6141-135#12830#12965
25.2M → Finish21154-133#12965#13098
TOTALS20082441-433
📊

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