Boston Marathon logo
BOSTON MARATHON 2025

Reda Guermas

Bib: 18914•M

CA

0:00
0:00
/ mi
Masters
Be the first to cheer!
Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M55-59)
#0 / 1648
Race Day Weather
50°/40°F
broken clouds

⏱️ 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
8:03/mi
25:02
↑ 97↓ 3451.5%
10K· 6.21 mi
8:01/mi
49:57
↑ 79↓ 1380.4%
15K· 9.32 mi
7:55/mi
1:14:34
↑ 67↓ 78
20K· 12.43 mi
8:23/mi
1:40:37
↑ 106↓ 860.1%
Half· 13.11 mi
7:33/mi
1:45:46
↑ 19↓ 370.5%
25K· 15.53 mi
8:21/mi
2:06:01
↑ 66↓ 880.2%
30K· 18.64 mi
8:33/mi
2:32:35
↑ 181↓ 1480.2%
20M
9:05/mi
2:44:55
↑ 64↓ 500.2%
21M
9:51/mi
2:54:46
↑ 106↓ 241.6%
35K· 21.75 mi
9:11/mi
3:01:38
↑ 17↓ 861.7%
23M
9:12/mi
3:13:09
↑ 23↓ 630.6%
24M
9:25/mi
3:22:34
↓ 821.3%
40K· 24.85 mi
9:32/mi
3:30:43
↓ 200.3%
25.2M
11:16/mi
3:34:36
↑ 13↓ 160.2%
Finish· 26.22 mi
9:02/mi
3:43:48
↑ 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
Time1:45:46
Pace8:04 /mi
2nd Half
Distance13.11 mi
Time1:58:02
Pace9:00 /mi
📊Positive Split: 11.6% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:16:0825:028:0325:02
8:03
-
10K
6.21 mi11:41:0349:578:0224:55
8:01
-0:02
15K
9.32 mi12:05:401:14:348:0024:37
7:55
-0:06
20K
12.43 mi12:31:431:40:378:0626:03
8:23
+0:28
Half
13.11 mi12:36:521:45:468:045:09
7:33
-0:50
25K
15.53 mi12:57:072:06:018:0720:15
8:21
+0:48
30K
18.64 mi13:23:412:32:358:1126:34
8:33
+0:12
20M
20.00 mi13:36:012:44:558:1512:20
9:05
+0:32
21M
21.00 mi13:45:522:54:468:199:51
9:51
+0:46
35K
21.75 mi13:52:443:01:388:216:52
9:11
-0:40
23M
23.00 mi14:04:153:13:098:2411:31
9:12
+0:01
24M
24.00 mi14:13:403:22:348:269:25
9:25
+0:13
40K
24.85 mi14:21:493:30:438:298:09
9:32
+0:07
25.2M
25.20 mi14:25:423:34:368:313:53
11:16
+1:44
Finish
26.22 mi14:34:543:43:488:339:12
9:02
-2:14

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

8:33 /mi

Slowest Pace

11:16 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:32:35

68% of race

Time at Steady Pace

49:20

22% of race

Time at Slower Pace

21:53

10% of race

Average Pace: 8:32 /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 mi11:16:0825:028:0325:02
8:03
#17052
10K
6.21 mi11:41:0349:578:0224:55
8:01
#16819
15K
9.32 mi12:05:401:14:348:0024:37
7:55
#16329
20K
12.43 mi12:31:431:40:378:0626:03
8:23
#16652
Half
13.11 mi12:36:521:45:468:045:09
7:33
#16438
25K
15.53 mi12:57:072:06:018:0720:15
8:21
#16397
30K
18.64 mi13:23:412:32:358:1126:34
8:33
#16121
20M
20.00 mi13:36:012:44:558:1512:20
9:05
#16174
21M
21.00 mi13:45:522:54:468:199:51
9:51
#16218
35K
21.75 mi13:52:443:01:388:216:52
9:11
#16292
23M
23.00 mi14:04:153:13:098:2411:31
9:12
#16327
24M
24.00 mi14:13:403:22:348:269:25
9:25
#16486
40K
24.85 mi14:21:493:30:438:298:09
9:32
#16594
25.2M
25.20 mi14:25:423:34:368:313:53
11:16
#16719
Finish
26.22 mi14:34:543:43:488:339:12
9:02
#16840
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
5K3.11 mi3.11 mi17052112351123515413(Top 54%)10555(Top 66%)10555(Top 640%)
10K6.21 mi3.10 mi16819+23311148+8711148+8716631(Top 59%)11082(Top 69%)11082(Top 672%)
15K9.32 mi3.11 mi16329+49010950+19810950+19815413(Top 54%)10555(Top 66%)10555(Top 640%)
20K12.43 mi3.11 mi16652-32311072-12211072-12217454(Top 61%)11373(Top 71%)11373(Top 690%)
Half13.11 mi0.68 mi16438+21410992+8010992+8012126(Top 43%)9098(Top 56%)9098(Top 552%)
25K15.53 mi2.42 mi16397+4110945+4710945+4716242(Top 57%)10752(Top 67%)10752(Top 652%)
30K18.64 mi3.11 mi16121+27610778+16710778+16715079(Top 53%)10097(Top 63%)10097(Top 613%)
20M20.00 mi1.36 mi16174-5310758+2010758+2017188(Top 61%)10896(Top 68%)10896(Top 661%)
21M21.00 mi1.00 mi16218-4410750+810750+817672(Top 62%)10997(Top 68%)10997(Top 667%)
35K21.75 mi0.75 mi16292-7410763-1310763-1319056(Top 67%)11520(Top 72%)11520(Top 699%)
23M23.00 mi1.25 mi16327-3510754+910754+917303(Top 61%)10649(Top 66%)10649(Top 646%)
24M24.00 mi1.00 mi16486-15910790-3610790-3619286(Top 68%)11540(Top 72%)11540(Top 700%)
40K24.85 mi0.85 mi16594-10810805-1510805-1518825(Top 66%)11234(Top 70%)11234(Top 682%)
25.2M25.20 mi0.35 mi16719-12510836-3110836-3121374(Top 75%)12463(Top 77%)12463(Top 756%)
Finish26.22 mi1.02 mi16840-12110867-3110867-3119177(Top 68%)11416(Top 71%)11416(Top 693%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 54%
×21story building
+97ft-345ft

Overall

15413

Males

10555

M55-59

10555

5K→10K

3.1 - 6.2 mi

Top 59%
×5story building
+79ft-138ft

Overall

16631

Males

11082

M55-59

11082

10K→15K

6.2 - 9.3 mi

Top 54%
×3story building
+67ft-78ft

Overall

15413

Males

10555

M55-59

10555

15K→20K

9.3 - 12.4 mi

Top 61%
×5story building
+106ft-86ft

Overall

17454

Males

11373

M55-59

11373

20K→Half

12.4 - 13.1 mi

Top 43%
×2story building
+19ft-37ft

Overall

12126

Males

9098

M55-59

9098

Half→25K

13.1 - 15.5 mi

Top 57%
×4story building
+66ft-88ft

Overall

16242

Males

10752

M55-59

10752

25K→30K

15.5 - 18.6 mi

Top 53%
×9story building
+181ft-148ft

Overall

15079

Males

10097

M55-59

10097

30K→20M

18.6 - 20.0 mi

Top 61%
×5story building
+64ft-50ft

Overall

17188

Males

10896

M55-59

10896

20M→21M

20.0 - 21.0 mi

Top 62%
×8story building
+106ft-24ft

Overall

17672

Males

10997

M55-59

10997

21M→35K

21.0 - 21.8 mi

Top 67%
×7story building
+17ft-86ft

Overall

19056

Males

11520

M55-59

11520

35K→23M

21.8 - 23.0 mi

Top 61%
×5story building
+23ft-63ft

Overall

17303

Males

10649

M55-59

10649

23M→24M

23.0 - 24.0 mi

Top 68%
×6story building
+12ft-82ft

Overall

19286

Males

11540

M55-59

11540

24M→40K

24.0 - 24.9 mi

Top 66%
×1story
+6ft-20ft

Overall

18825

Males

11234

M55-59

11234

40K→25.2M

24.9 - 25.2 mi

Top 75%
×1story
+13ft-16ft

Overall

21374

Males

12463

M55-59

12463

25.2M→Finish

25.2 - 26.2 mi

Top 68%
×2story building
+22ft-21ft

Overall

19177

Males

11416

M55-59

11416

Passing Analysis

Category:
Athletes Passed
2290
Passed By
2078
Net Change
+212
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#17052
5K → 10K425192+233#17052#16819
10K → 15K52636+490#16819#16329
15K → 20K116439-323#16329#16652
20K → Half2140+214#16652#16438
Half → 25K170129+41#16438#16397
25K → 30K36690+276#16397#16121
30K → 20M102155-53#16121#16174
20M → 21M87131-44#16174#16218
21M → 35K43117-74#16218#16292
35K → 23M100135-35#16292#16327
23M → 24M44203-159#16327#16486
24M → 40K46154-108#16486#16594
40K → 25.2M8133-125#16594#16719
25.2M → Finish43164-121#16719#16840
TOTALS22902078+212
📊

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