Boston Marathon logo
BOSTON MARATHON 2025

Derek Cyr

Bib: 2809•M

NC

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Top 11%
Gender (Male)
#0 / 16105
Top 18%
Masters (Masters Men)
#0 / 10463
Top 6%
Division (M40-44)
#0 / 2247
Top 17%
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
20:48
Rank: #5376
Start → 5K
20:48 | 6:42/mi
10K· 6.21 mi
41:32
Rank: #5216 (+160)
5K → 10K
20:44 | 6:40/mi
15K· 9.32 mi
1:02:15
Rank: #5048 (+168)
10K → 15K
20:43 | 6:40/mi
20K· 12.43 mi
1:23:00
Rank: #4807 (+241)
15K → 20K
20:45 | 6:41/mi
Half· 13.11 mi
1:27:26
Rank: #4731 (+76)
20K → Half
4:26 | 6:30/mi
25K· 15.53 mi
1:43:41
Rank: #4574 (+157)
Half → 25K
16:15 | 6:42/mi
30K· 18.64 mi
2:04:47
Rank: #4262 (+312)
25K → 30K
21:06 | 6:47/mi
20M
2:13:54
Rank: #4075 (+187)
30K → 20M
9:07 | 6:43/mi
21M
2:20:44
Rank: #3856 (+219)
20M → 21M
6:50 | 6:50/mi
35K· 21.75 mi
2:25:29
Rank: #3751 (+105)
21M → 35K
4:45 | 6:21/mi
23M
2:33:33
Rank: #3521 (+230)
35K → 23M
8:04 | 6:27/mi
24M
2:39:57
Rank: #3368 (+153)
23M → 24M
6:24 | 6:24/mi
40K· 24.85 mi
2:45:26
Rank: #3234 (+134)
24M → 40K
5:29 | 6:25/mi
25.2M
2:47:49
Rank: #3157 (+77)
40K → 25.2M
2:23 | 6:55/mi
Finish· 26.22 mi
2:54:05
Rank: #3018 (+139)
25.2M → Finish
6:16 | 6:09/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 Half⚖️ Balanced
Distance13.11 mi
Time1:27:26
Pace6:40 /mi
2nd Half⚖️ Balanced
Distance13.11 mi
Time1:26:39
Pace6:37 /mi
📊Even Split: Consistent pacing between halves

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:22:1220:486:4220:48
6:42
-
10K
6.21 mi10:42:5641:326:4120:44
6:40
-0:02
15K
9.32 mi11:03:391:02:156:4120:43
6:40
0:00
20K
12.43 mi11:24:241:23:006:4120:45
6:41
+0:01
Half
13.11 mi11:28:501:27:266:404:26
6:30
-0:11
25K
15.53 mi11:45:051:43:416:4016:15
6:42
+0:12
30K
18.64 mi12:06:112:04:476:4221:06
6:47
+0:05
20M
20.00 mi12:15:182:13:546:429:07
6:43
-0:04
21M
21.00 mi12:22:082:20:446:426:50
6:50
+0:07
35K
21.75 mi12:26:532:25:296:414:45
6:21
-0:29
23M
23.00 mi12:34:572:33:336:418:04
6:27
+0:06
24M
24.00 mi12:41:212:39:576:406:24
6:24
-0:03
40K
24.85 mi12:46:502:45:266:395:29
6:25
+0:01
25.2M
25.20 mi12:49:132:47:496:402:23
6:55
+0:30
Finish
26.22 mi12:55:292:54:056:396:16
6:09
-0:46

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

6:09 /mi

Average Pace

6:39 /mi

Slowest Pace

6:55 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:23:46

83% of race

Time at Steady Pace

30:19

17% of race

Time at Slower Pace

0:00

0% of race

Average Pace: 6:38 /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 mi10:22:1220:486:4220:48
6:42
#5376
10K
6.21 mi10:42:5641:326:4120:44
6:40
#5216
15K
9.32 mi11:03:391:02:156:4120:43
6:40
#5048
20K
12.43 mi11:24:241:23:006:4120:45
6:41
#4807
Half
13.11 mi11:28:501:27:266:404:26
6:30
#4731
25K
15.53 mi11:45:051:43:416:4016:15
6:42
#4574
30K
18.64 mi12:06:112:04:476:4221:06
6:47
#4262
20M
20.00 mi12:15:182:13:546:429:07
6:43
#4075
21M
21.00 mi12:22:082:20:446:426:50
6:50
#3856
35K
21.75 mi12:26:532:25:296:414:45
6:21
#3751
23M
23.00 mi12:34:572:33:336:418:04
6:27
#3521
24M
24.00 mi12:41:212:39:576:406:24
6:24
#3368
40K
24.85 mi12:46:502:45:266:395:29
6:25
#3234
25.2M
25.20 mi12:49:132:47:496:402:23
6:55
#3157
Finish
26.22 mi12:55:292:54:056:396:16
6:09
#3018
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM40-44Seg. OverallSeg. MalesSeg. M40-44
5K3.11 mi3.11 mi5376499349934780(Top 17%)4461(Top 28%)4461(Top 199%)
10K6.21 mi3.10 mi5216+1604849+1444849+1445076(Top 18%)4728(Top 29%)4728(Top 210%)
15K9.32 mi3.11 mi5048+1684701+1484701+1484780(Top 17%)4461(Top 28%)4461(Top 199%)
20K12.43 mi3.11 mi4807+2414482+2194482+2194228(Top 15%)3956(Top 25%)3956(Top 176%)
Half13.11 mi0.68 mi4731+764415+674415+673605(Top 13%)3405(Top 21%)3405(Top 152%)
25K15.53 mi2.42 mi4574+1574273+1424273+1424125(Top 15%)3837(Top 24%)3837(Top 171%)
30K18.64 mi3.11 mi4262+3123990+2833990+2833381(Top 12%)3153(Top 20%)3153(Top 140%)
20M20.00 mi1.36 mi4075+1873816+1743816+1742497(Top 9%)2351(Top 15%)2351(Top 105%)
21M21.00 mi1.00 mi3856+2193621+1953621+1951646(Top 6%)1555(Top 10%)1555(Top 69%)
35K21.75 mi0.75 mi3751+1053524+973524+971809(Top 6%)1698(Top 11%)1698(Top 76%)
23M23.00 mi1.25 mi3521+2303310+2143310+2141282(Top 5%)1207(Top 7%)1207(Top 54%)
24M24.00 mi1.00 mi3368+1533169+1413169+1411659(Top 6%)1546(Top 10%)1546(Top 69%)
40K24.85 mi0.85 mi3234+1343047+1223047+1221302(Top 5%)1209(Top 8%)1209(Top 54%)
25.2M25.20 mi0.35 mi3157+772971+762971+761257(Top 4%)1159(Top 7%)1159(Top 52%)
Finish26.22 mi1.02 mi3018+1392845+1262845+1261360(Top 5%)1267(Top 8%)1267(Top 56%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 17%
×21stories
+97ft-345ft

Overall

4780

Males

4461

M40-44

4461

5K→10K

3.1 - 6.2 mi

Top 18%
×5stories
+79ft-138ft

Overall

5076

Males

4728

M40-44

4728

10K→15K

6.2 - 9.3 mi

Top 17%
×3stories
+67ft-78ft

Overall

4780

Males

4461

M40-44

4461

15K→20K

9.3 - 12.4 mi

Top 15%
×5stories
+106ft-86ft

Overall

4228

Males

3956

M40-44

3956

20K→Half

12.4 - 13.1 mi

Top 13%
×2stories
+19ft-37ft

Overall

3605

Males

3405

M40-44

3405

Half→25K

13.1 - 15.5 mi

Top 15%
×4stories
+66ft-88ft

Overall

4125

Males

3837

M40-44

3837

25K→30K

15.5 - 18.6 mi

Top 12%
×9stories
+181ft-148ft

Overall

3381

Males

3153

M40-44

3153

30K→20M

18.6 - 20.0 mi

Top 9%
×5stories
+64ft-50ft

Overall

2497

Males

2351

M40-44

2351

20M→21M

20.0 - 21.0 mi

Top 6%
×8stories
+106ft-24ft

Overall

1646

Males

1555

M40-44

1555

21M→35K

21.0 - 21.8 mi

Top 6%
×7stories
+17ft-86ft

Overall

1809

Males

1698

M40-44

1698

35K→23M

21.8 - 23.0 mi

Top 5%
×5stories
+23ft-63ft

Overall

1282

Males

1207

M40-44

1207

23M→24M

23.0 - 24.0 mi

Top 6%
×6stories
+12ft-82ft

Overall

1659

Males

1546

M40-44

1546

24M→40K

24.0 - 24.9 mi

Top 5%
×1story
+6ft-20ft

Overall

1302

Males

1209

M40-44

1209

40K→25.2M

24.9 - 25.2 mi

Top 4%
×1story
+13ft-16ft

Overall

1257

Males

1159

M40-44

1159

25.2M→Finish

25.2 - 26.2 mi

Top 5%
×2stories
+22ft-21ft

Overall

1360

Males

1267

M40-44

1267

Passing Analysis

Category:
Athletes Passed
2618
Passed By
260
Net Change
+2358
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#5376
5K → 10K263103+160#5376#5216
10K → 15K23668+168#5216#5048
15K → 20K26726+241#5048#4807
20K → Half782+76#4807#4731
Half → 25K18528+157#4731#4574
25K → 30K33220+312#4574#4262
30K → 20M1925+187#4262#4075
20M → 21M2190+219#4075#3856
21M → 35K1083+105#3856#3751
35K → 23M2300+230#3751#3521
23M → 24M1541+153#3521#3368
24M → 40K1351+134#3368#3234
40K → 25.2M770+77#3234#3157
25.2M → Finish1423+139#3157#3018
TOTALS2618260+2358
📊

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