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SF MARATHON 1ST HALF 2026

Robert Carlson

Bib: 18726•M•Age: 55

Los Altos Hills, CA

0:00
0:00
/ mi
Masters
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Overall
#0 / 6575
Top 43%
Gender (Male)
#0 / 3619
Masters (Masters Men)
#0 / 1030
Top 44%
Division (M55-59)
#0 / 142
Top 43%
Race Day Weather
59°/49°F
scattered clouds

⏱️ Race Timeline

Course Elevation
10–277 ft
≈
×22story building
•▲ 774 ft climb · ▼ 557 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
2M
10:05/mi
20:11
→ flat
4M
9:58/mi
40:07
↑ 67↓ 69
6M
9:56/mi
59:59
↑ 1231.1%
8M
10:00/mi
1:20:00
↑ 166↓ 531.1%
9.6M
10:00/mi
1:36:00
↑ 68↓ 1931.5%
10M
19:01/mi
1:43:36
↓ 241.1%
10.5M
5:10/mi
1:46:11
↓ 732.7%
12M
14:37/mi
2:08:06
↑ 2803.2%
Finish· 13.11 mi
10:00/mi
2:19:11
↑ 14↓ 891.3%

The Course

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Half Splits

1st Half· via 6MFaster
Distance6.00 mi
Time59:59
Pace10:00 /mi
2nd Half
Distance7.11 mi
Time1:19:12
Pace11:08 /mi
📊Positive Split: 32.0% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
2M
2.00 mi07:07:0720:1110:0520:11
10:05
-
4M
4.00 mi07:27:0340:0710:0219:56
9:58
-0:07
6M
6.00 mi07:46:5559:5910:0019:52
9:56
-0:02
8M
8.00 mi08:06:561:20:0010:0020:01
10:00
+0:04
9.6M
9.60 mi08:22:561:36:0010:0016:00
10:00
0:00
10M
10.00 mi08:30:321:43:3610:227:36
19:01
+9:01
10.5M
10.50 mi08:33:071:46:1110:072:35
5:10
-13:51
12M
12.00 mi08:55:022:08:0610:4121:55
14:37
+9:27
Finish
13.11 mi09:06:072:19:1110:3711:05
10:00
-4:37

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

5:10 /mi

Average Pace

10:37 /mi

Slowest Pace

19:01 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:35

2% of race

Time at Steady Pace

1:47:05

77% of race

Time at Slower Pace

29:31

21% of race

Average Pace: 10:37 /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...
0mi3.3mi6.6mi9.8mi13.1mi
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
2M
2.00 mi07:07:0720:1110:0520:11
10:05
#3169
4M
4.00 mi07:27:0340:0710:0219:56
9:58
#2907
6M
6.00 mi07:46:5559:5910:0019:52
9:56
#2759
8M
8.00 mi08:06:561:20:0010:0020:01
10:00
#2650
9.6M
9.60 mi08:22:561:36:0010:0016:00
10:00
#2833
10M
10.00 mi08:30:321:43:3610:227:36
19:01
#2819
10.5M
10.50 mi08:33:071:46:1110:072:35
5:10
#2831
12M
12.00 mi08:55:022:08:0610:4121:55
14:37
#2900
Finish
13.11 mi09:06:072:19:1110:3711:05
10:00
#2857
Faster pace
Steady pace
Slower pace
Est.Checkpoint not recorded (estimated)
~Segment time uses estimated prior
Featured Segment

Garmin Challenge

Top 46%
Garmin Challenge
Course map with the garmin challenge highlighted
Garmin Challenge · 9.6–10.5 mi · © Mapbox © OpenStreetMap

10:11

Segment Time

11:19/mi

Pace

0.90 mi

Distance

Overall

3020

Men

2011

Division

63

See the full Garmin Challenge leaderboard

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM55-59Seg. OverallSeg. MalesSeg. M55-59
2M2.00 mi2.00 mi31692128733240(Top 49%)2092(Top 58%)65(Top 46%)
4M4.00 mi2.00 mi2907+2621999+12966+72741(Top 42%)1896(Top 52%)57(Top 40%)
6M6.00 mi2.00 mi2759+1481911+8859+72581(Top 39%)1812(Top 50%)57(Top 40%)
8M8.00 mi2.00 mi2650+1091873+3861-22377(Top 36%)1723(Top 48%)54(Top 38%)
9.6M9.60 mi1.60 mi2833-1831951-7863-23995(Top 61%)2401(Top 66%)79(Top 56%)
10M10.00 mi0.40 mi2819+141941+10632969(Top 45%)1982(Top 55%)63(Top 44%)
10.5M10.50 mi0.50 mi2831-121949-8633558(Top 54%)2310(Top 64%)78(Top 55%)
12M12.00 mi1.50 mi2900-691976-2762+13240(Top 49%)2092(Top 58%)65(Top 46%)
Finish13.11 mi1.11 mi2857+431950+2661+12849(Top 43%)1890(Top 52%)54(Top 38%)

Segment Performance Analysis

10.5M→12M

0.0 - 2.0 mi

Top 49%
~flat
+5ft-3ft

Overall

3240

Males

2092

M55-59

65

2M→4M

2.0 - 4.0 mi

Top 42%
×4story building
+67ft-69ft

Overall

2741

Males

1896

M55-59

57

4M→6M

4.0 - 6.0 mi

Top 39%
×9story building
+123ft-9ft

Overall

2581

Males

1812

M55-59

57

6M→8M

6.0 - 8.0 mi

Top 36%
×12story building
+166ft-53ft

Overall

2377

Males

1723

M55-59

54

8M→9.6M

8.0 - 9.6 mi

Top 61%
×13story building
+68ft-193ft

Overall

3995

Males

2401

M55-59

79

9.6M→10M

9.6 - 10.0 mi

Top 45%
×2story building
+0ft-24ft

Overall

2969

Males

1982

M55-59

63

10M→10.5M

10.0 - 10.5 mi

Top 54%
×6story building
+1ft-73ft

Overall

3558

Males

2310

M55-59

78

10.5M→12M

10.5 - 12.0 mi

Top 49%
×21story building
+280ft-26ft

Overall

3240

Males

2092

M55-59

65

12M→Finish

12.0 - 13.1 mi

Top 43%
×7story building
+14ft-89ft

Overall

2849

Males

1890

M55-59

54

Passing Analysis

Category:
Athletes Passed
886*
Passed By
574
Net Change
+312
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 2M----#3169
2M → 4M30947+262#3169#2907
4M → 6M19244+148#2907#2759
6M → 8M192*83+109#2759#2650
8M → 9.6M23206-183#2650#2833
9.6M → 10M4127+14#2833#2819
10M → 10.5M214-12#2819#2831
10.5M → 12M52121-69#2831#2900
12M → Finish75*32+43#2900#2857
TOTALS886*574+312

* Includes athletes who did not complete a segment (DNF/DNQ).

📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Official Timing Data

The San Francisco Marathon

The San Francisco Marathon

Race Place Events

Race Place Events